阅读说明：本技术 谐振电路llc的驱动模块 (Drive module of resonant circuit LLC ) 是由 刘晓红 刘鹏飞 吴壬华 于 2019-07-22 设计创作，主要内容包括：本申请公开了一种谐振电路LLC的驱动模块,包括周期信号输入端口、死区信号输入端口、信号延迟输入端口、信号处理模块和八个驱动信号输出端口；八个驱动信号输出端口包括四个原边输出端口和四个副边输出端口；信号处理模块用于处理周期信号和死区信号以生成四个原边开关管驱动信号,并通过四个原边输出端口输出四个原边开关管驱动信号；信号处理模块还用于处理周期信号、死区信号和相位差信号以生成四个副边开关管驱动信号,并通过四个副边输出端口输出四个副边开关管驱动信号。实施本申请实施例可拓宽MATLAB在仿真领域的应用范围。(The application discloses a drive module of a resonant circuit LLC, which comprises a periodic signal input port, a dead zone signal input port, a signal delay input port, a signal processing module and eight drive signal output ports; the eight driving signal output ports comprise four primary side output ports and four secondary side output ports; the signal processing module is used for processing the periodic signal and the dead zone signal to generate four primary side switching tube driving signals and outputting the four primary side switching tube driving signals through four primary side output ports; the signal processing module is also used for processing the periodic signal, the dead zone signal and the phase difference signal to generate four secondary side switching tube driving signals and outputting the four secondary side switching tube driving signals through four secondary side output ports. By implementing the embodiment of the application, the application range of MATLAB in the simulation field can be widened.)

1. A drive module of a resonant circuit LLC is characterized by comprising a periodic signal input port, a dead zone signal input port, a signal delay input port, a signal processing module and eight drive signal output ports; the eight driving signal output ports comprise four primary side output ports and four secondary side output ports;

the periodic signal input port is used for inputting periodic signals, and the dead zone signal input port is used for inputting dead zone signals; the signal processing module is used for processing the periodic signal and the dead zone signal to generate four primary side switching tube driving signals and outputting the four primary side switching tube driving signals through four primary side output ports;

the signal delay input port is used for inputting a phase difference signal, and the signal processing module is further used for processing the periodic signal, the dead zone signal and the phase difference signal to generate four secondary-side switching tube driving signals and outputting the four secondary-side switching tube driving signals through the four secondary-side output ports.

2. The driver module of the resonant circuit LLC of claim 1, wherein the signal processing module comprises a first signal processing module and a second signal processing module;

the first signal processing module is connected with the second signal processing module, the periodic signal input port, the dead zone signal input port and the four primary side output ports;

and the second signal processing module is connected with the signal delay input port and the four secondary side output ports.

3. The driver module of the resonant circuit LLC of claim 2, wherein the four primary output ports include a first output port, a second output port, a third output port and a fourth output port, the first output port and the fourth output port output the same driving signals, and the second output port and the third output port output the same driving signals;

the first signal processing module comprises a first circuit and a second circuit; the first circuit is configured to provide the driving signals output through the first output port and the fourth output port, and the second circuit is configured to provide the driving signals output through the second output port and the third output port.

4. The driver module of the resonant circuit LLC of claim 3, wherein the first circuit includes a sawtooth wave generation module, a first amplitude positioning module, a first adder-subtractor, a second adder-subtractor, a first constant module, a second constant module, a first condition selection switch, a second condition selection switch, a first sign module, a first clipping module, and a first multiplication module;

the input end of the sawtooth wave generation module is connected with the periodic signal input port, and the output end of the sawtooth wave generation module is connected with the negative input end of the first adder-subtractor, the second input end of the first condition selection switch, the third input end of the first condition selection switch and the second input end of the second condition selection switch; the first amplitude positioning module is connected with the positive input end of the first adder-subtractor; the output end of the first adder-subtractor is connected with the first input end of the first condition selection switch;

the first constant module is connected with a first input end of the second condition selection switch, and the second constant module is connected with a third input end of the second condition selection switch;

the output end of the first condition selection switch is connected with the positive input end of the second adder-subtractor, the negative input end of the second adder-subtractor is connected with the dead zone signal input port, the output end of the second adder-subtractor is connected with the input end of the first sign module, the output end of the first sign module is connected with the input end of the first amplitude limiting module, the output end of the first amplitude limiting module is connected with the input end of the first multiplication module, and the input end of the first multiplication module is also connected with the output end of the second condition selection switch;

and the output end of the first multiplication operation module is connected with the first output port and the fourth output port.

5. The driver module of the resonant circuit LLC of claim 4, wherein the second circuit includes a third adder-subtractor, a second amplitude-positioning module, a second sign module, a second clipping module, a logical negation module, and a second multiplication module;

a first negative input end of the third adder-subtractor is connected with the output end of the first condition selection switch, a second negative input end of the third adder-subtractor is connected with the dead zone signal input port, and a positive input end of the third adder-subtractor is connected with the second amplitude positioning module;

the output end of the third adder-subtractor is connected with the input end of the second symbol module, the output end of the second symbol module is connected with the input end of the second amplitude limiting module, and the output end of the second amplitude limiting module is connected with the input end of the second multiplication operation module;

the input end of the logic negation module is connected with the output end of the second condition selection switch, and the output end of the logic negation module is connected with the input end of the second multiplication operation module; and the output end of the second multiplication operation module is connected with the second output port and the third output port.

6. The driver module of the resonant circuit LLC of claim 5, wherein the four secondary output ports include a fifth output port, a sixth output port, a seventh output port and an eighth output port, the fifth output port and the eighth output port output the same driving signal, and the sixth output port and the seventh output port output the same driving signal;

the second signal processing module comprises a third circuit and a fourth circuit; the third circuit is configured to provide the driving signals output through the sixth output port and the seventh output port, and the fourth circuit is configured to provide the driving signals output through the fifth output port and the eighth output port.

7. The driving module of the resonant circuit LLC of claim 6, wherein the third circuit comprises a fourth adder-subtractor, a fifth adder-subtractor, a sixth adder-subtractor, a first adder, a third symbol module, a fourth symbol module, a third clipping module, a fourth clipping module, and a third multiplication module;

the input end of the first adder is connected with the dead zone signal port, the second amplitude positioning module and the signal delay input port, and the output end of the first adder is connected with the negative input end of the fourth adder-subtractor; the positive input end of the fourth adder-subtractor is connected with the output end of the sawtooth wave generation module, and the output end of the fourth adder-subtractor is connected with the input end of the third symbol module; the output end of the third symbol module is connected with the input end of the third amplitude limiting module; the output end of the third amplitude limiting module is connected with the input end of the third multiplication operation module;

a positive input end of the sixth adder-subtractor is connected with the first amplitude positioning module, a negative input end of the sixth adder-subtractor is connected with the signal delay input port, and an output end of the sixth adder-subtractor is connected with a positive input end of the fifth adder-subtractor; the negative input end of the fifth subtractor is connected with the output end of the sawtooth wave generation module, the output end of the fifth subtractor is connected with the input end of the fourth symbol module, the output end of the fourth symbol module is connected with the input end of the fourth amplitude limiting module, and the output end of the fourth amplitude limiting module is connected with the input end of the third multiplication operation module;

and the output end of the third multiplication operation module is connected with the sixth output port and the seventh output port.

8. The driver module of the resonant circuit LLC of claim 7, wherein the fourth circuit includes a seventh adder-subtractor, an eighth adder-subtractor, a ninth adder-subtractor, a second adder, a fifth symbol module, a sixth symbol module, a fifth clipping module, a sixth clipping module, and a fourth multiplication module;

a positive input end of the second adder is connected with the dead zone signal input port and the signal delay input port, and an output end of the second adder is connected with a negative input end of the seventh adder-subtractor; the positive input end of the seventh adder-subtractor is connected with the output end of the sawtooth wave generation module, and the output end of the seventh adder-subtractor is connected with the input end of the fifth sign module; the output end of the fifth symbol module is connected with the input end of the fifth amplitude limiting module; the output end of the fifth amplitude limiting module is connected with the input end of the fourth multiplication operation module;

a positive input end of the eighth adder-subtractor is connected to the second amplitude positioning module, a negative input end of the eighth adder-subtractor is connected to the signal delay input port, and an output end of the eighth adder-subtractor is connected to a positive input end of the ninth adder-subtractor; the negative input end of the ninth adder-subtractor is connected with the output end of the sawtooth wave generation module, and the output end of the ninth adder-subtractor is connected with the input end of the sixth symbol module; the output end of the sixth symbol module is connected with the input end of the sixth amplitude limiting module; the output end of the sixth amplitude limiting module is connected with the input end of the fourth multiplication operation module;

and the output end of the fourth multiplication operation module is connected with the fifth output port and the eighth output port.

9. The driver module of the resonant circuit LLC according to any one of claims 4 or 5, wherein the sawtooth wave generation module comprises a time signal module, a multiplication and division operation module, a third amplitude positioning module, a numerical remainder module and a signal processing module;

the first multiplication input end of the multiplication-division operation module is connected with the time signal module, the second multiplication input end of the multiplication-division operation module is connected with the third amplitude positioning module, the division input end of the multiplication-division operation module is connected with the periodic signal input port, and the output end of the multiplication-division operation module is connected with the first input port of the numerical value remainder module; the second input end of the numerical value remainder module is connected with the third amplitude positioning module; the output end of the numerical value remainder module is connected with the input end of the signal processing module, and the output end of the signal processing module is connected with the output end of the sawtooth wave generation module.

Technical Field

The application relates to the technical field of electronic circuits, in particular to a drive module of a resonant circuit LLC.

Background

The current resonant circuit LLC is widely used because of the advantages of reducing the switching loss of the power supply, improving the efficiency and power density of the power converter, etc., by controlling the switching frequency. Meanwhile, the SIMULINK model in MATLAB is applied to pulse width modulation PWM fixed frequency simulation in a mature mode. However, the method is not widely applied to resonant circuit LLC variable frequency simulation because of the lack of a dedicated LLC driving module.

Disclosure of Invention

The embodiment of the application provides a drive module of a resonant circuit LLC, and the drive module of the resonant circuit LLC can provide a Pulse Width Modulation (PWM) drive signal aiming at a specific circuit, so that the application of frequency conversion simulation of the resonant circuit LLC in MATLAB is realized, the simulation limitation of the MATLAB in the frequency conversion field is solved, and the application range of the MATLAB in the simulation field is widened.

In a first aspect, an embodiment of the present application provides a driving module of a resonant circuit LLC, including a periodic signal input port, a dead zone signal input port, a signal delay input port, a signal processing module, and eight driving signal output ports;

the eight driving signal output ports comprise four primary side output ports and four secondary side output ports;

the periodic signal input port is used for inputting periodic signals, and the dead zone signal input port is used for inputting dead zone signals; the signal processing module is used for processing the periodic signal and the dead zone signal to generate four primary side switching tube driving signals and outputting the four primary side switching tube driving signals through four primary side output ports;

the signal delay input port is used for inputting a phase difference signal, and the signal processing module is further used for processing the periodic signal, the dead zone signal and the phase difference signal to generate four secondary-side switching tube driving signals and outputting the four secondary-side switching tube driving signals through the four secondary-side output ports.

In one possible example, the signal processing module comprises a first signal processing module and a second signal processing module;

the first signal processing module is connected with the second signal processing module, the periodic signal input port, the dead zone signal input port and the four primary side output ports;

and the second signal processing module is connected with the signal delay input port and the four secondary side output ports.

In one possible example, the four primary output ports include a first output port, a second output port, a third output port and a fourth output port, the first output port and the fourth output port output the same driving signal, and the second output port and the third output port output the same driving signal;

the first signal processing module comprises a first circuit and a second circuit; the first circuit is configured to provide the driving signals output through the first output port and the fourth output port, and the second circuit is configured to provide the driving signals output through the second output port and the third output port.

In one possible example, the first circuit includes a sawtooth wave generation module, a first amplitude positioning module, a first adder-subtractor, a second adder-subtractor, a first constant module, a second constant module, a first condition selection switch, a second condition selection switch, a first sign module, a first clipping module, and a first multiplication module;

the input end of the sawtooth wave generation module is connected with the periodic signal input port, and the output end of the sawtooth wave generation module is connected with the negative input end of the first adder-subtractor, the second input end of the first condition selection switch, the third input end of the first condition selection switch and the second input end of the second condition selection switch; the first amplitude positioning module is connected with the positive input end of the first adder-subtractor; the output end of the first adder-subtractor is connected with the first input end of the first condition selection switch;

the first constant module is connected with a first input end of the second condition selection switch, and the second constant module is connected with a third input end of the second condition selection switch;

the output end of the first condition selection switch is connected with the positive input end of the second adder-subtractor, the negative input end of the second adder-subtractor is connected with the dead zone signal input port, the output end of the second adder-subtractor is connected with the input end of the first sign module, the output end of the first sign module is connected with the input end of the first amplitude limiting module, the output end of the first amplitude limiting module is connected with the input end of the first multiplication module, and the input end of the first multiplication module is also connected with the output end of the second condition selection switch;

and the output end of the first multiplication operation module is connected with the first output port and the fourth output port.

In one possible example, the second circuit includes a third adder-subtractor, a second magnitude-locating module, a second sign module, a second clipping module, a logical negation module, and a second multiplication module;

a first negative input end of the third adder-subtractor is connected with the output end of the first condition selection switch, a second negative input end of the third adder-subtractor is connected with the dead zone signal input port, and a positive input end of the third adder-subtractor is connected with the second amplitude positioning module;

the output end of the third adder-subtractor is connected with the input end of the second symbol module, the output end of the second symbol module is connected with the input end of the second amplitude limiting module, and the output end of the second amplitude limiting module is connected with the input end of the second multiplication operation module;

the input end of the logic negation module is connected with the output end of the second condition selection switch, and the output end of the logic negation module is connected with the input end of the second multiplication operation module; and the output end of the second multiplication operation module is connected with the second output port and the third output port.

In one possible example, the four secondary output ports include a fifth output port, a sixth output port, a seventh output port and an eighth output port, the fifth output port and the eighth output port output the same driving signal, and the sixth output port and the seventh output port output the same driving signal;

the second signal processing module comprises a third circuit and a fourth circuit; the third circuit is configured to provide the driving signals output through the sixth output port and the seventh output port, and the fourth circuit is configured to provide the driving signals output through the fifth output port and the eighth output port.

In one possible example, the third circuit includes a fourth adder-subtractor, a fifth adder-subtractor, a sixth adder-subtractor, a first adder-subtractor, a second adder-subtractor, a third adder-;

the input end of the first adder is connected with the dead zone signal port, the second amplitude positioning module and the signal delay input port, and the output end of the first adder is connected with the negative input end of the fourth adder-subtractor; the positive input end of the fourth adder-subtractor is connected with the output end of the sawtooth wave generation module, and the output end of the fourth adder-subtractor is connected with the input end of the third symbol module; the output end of the third symbol module is connected with the input end of the third amplitude limiting module; the output end of the third amplitude limiting module is connected with the input end of the third multiplication operation module;

a positive input end of the sixth adder-subtractor is connected with the first amplitude positioning module, a negative input end of the sixth adder-subtractor is connected with the signal delay input port, and an output end of the sixth adder-subtractor is connected with a positive input end of the fifth adder-subtractor; the negative input end of the fifth subtractor is connected with the output end of the sawtooth wave generation module, the output end of the fifth subtractor is connected with the input end of the fourth symbol module, the output end of the fourth symbol module is connected with the input end of the fourth amplitude limiting module, and the output end of the fourth amplitude limiting module is connected with the input end of the third multiplication operation module;

and the output end of the third multiplication operation module is connected with the sixth output port and the seventh output port.

In one possible example, the fourth circuit includes a seventh adder-subtractor, an eighth adder-subtractor, a ninth adder-subtractor, a second adder-subtractor, a fifth symbol module, a sixth symbol module, a fifth clipping module, a sixth clipping module, and a fourth multiplication module;

a positive input end of the second adder is connected with the dead zone signal input port and the signal delay input port, and an output end of the second adder is connected with a negative input end of the seventh adder-subtractor; the positive input end of the seventh adder-subtractor is connected with the output end of the sawtooth wave generation module, and the output end of the seventh adder-subtractor is connected with the input end of the fifth sign module; the output end of the fifth symbol module is connected with the input end of the fifth amplitude limiting module; the output end of the fifth amplitude limiting module is connected with the input end of the fourth multiplication operation module;

a positive input end of the eighth adder-subtractor is connected to the second amplitude positioning module, a negative input end of the eighth adder-subtractor is connected to the signal delay input port, and an output end of the eighth adder-subtractor is connected to a positive input end of the ninth adder-subtractor; the negative input end of the ninth adder-subtractor is connected with the output end of the sawtooth wave generation module, and the output end of the ninth adder-subtractor is connected with the input end of the sixth symbol module; the output end of the sixth symbol module is connected with the input end of the sixth amplitude limiting module; the output end of the sixth amplitude limiting module is connected with the input end of the fourth multiplication operation module;

and the output end of the fourth multiplication operation module is connected with the fifth output port and the eighth output port.

In one possible example, the sawtooth wave generation module comprises a time signal module, a multiplication and division operation module, a third amplitude positioning module, a numerical value residue taking module and a signal processing module;

the first multiplication input end of the multiplication-division operation module is connected with the time signal module, the second multiplication input end of the multiplication-division operation module is connected with the third amplitude positioning module, the division input end of the multiplication-division operation module is connected with the periodic signal input port, and the output end of the multiplication-division operation module is connected with the first input port of the numerical value remainder module; the second input end of the numerical value remainder module is connected with the third amplitude positioning module; the output end of the numerical value remainder module is connected with the input end of the signal processing module, and the output end of the signal processing module is connected with the output end of the sawtooth wave generation module.

In the application, a driving module of a resonant circuit LLC includes a periodic signal input port, a dead zone signal input port, a signal delay input port, a signal processing module, and eight driving signal output ports; the eight driving signal output ports comprise four primary side output ports and four secondary side output ports; the periodic signal input port is used for inputting periodic signals, and the dead zone signal input port is used for inputting dead zone signals; the signal processing module is used for processing the periodic signal and the dead zone signal to generate four primary side switching tube driving signals, and the four primary side output ports are used for outputting the four primary side switching tube driving signals; the signal delay input port is used for inputting a phase difference signal, the signal processing module is further used for processing the periodic signal, the dead zone signal and the phase difference signal to generate four secondary-side switching tube driving signals, and the four secondary-side output ports are used for outputting the four secondary-side switching tube driving signals. The LLC driving module can generate a primary side driving signal according to the periodic signal and the dead zone signal; meanwhile, a delay signal can be added on the basis of generating the primary side driving signal, and the secondary side driving signal is generated after processing, so that the primary side driving signal and the secondary side driving signal can meet the condition of a synchronous rectification function in circuit application, an additional circuit for generating the secondary side driving signal is not required to be added, and the reliability of the synchronous rectification function is improved. In addition, the LLC driving module in the application solves the simulation limitation of the MATLAB frequency conversion field, and widens the application of the MATLAB in the simulation field.

These and other aspects of the present application will be more readily apparent from the following description of the real-time examples.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings referred to in the embodiments or the background art of the present application will be briefly described below.

Reference will now be made in brief to the accompanying drawings, to which embodiments of the present application relate.

Fig. 1 is a schematic structural diagram of a driving module of a resonant circuit LLC according to an embodiment of the present application;

FIG. 2 is a schematic circuit diagram of a first signal processing module of FIG. 1;

FIG. 3 is a schematic circuit diagram of a second signal processing module shown in FIG. 1;

FIG. 4 is a schematic circuit diagram of a sawtooth module T1 shown in FIG. 2;

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The following are detailed below.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, system, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The drive module of the resonant circuit LLC provided by the embodiment of the application is suitable for the resonant circuit LLC DC/DC transformer, wherein the primary side and the secondary side of the transformer are respectively connected with the single-phase full bridge circuit, energy can flow bidirectionally, primary side frequency conversion drive is realized when the energy flows in the forward direction, and a secondary side switching tube works in a synchronous rectification state; when energy flows reversely, the secondary side is driven in a variable frequency mode, and the primary side switching tube works in a synchronous rectification state. Wherein the transformer comprises eight drive signal input ports, PWM1, PWM2, PWM3, PWM4, PWM5, PWM6, PWM7, and PWM 8. The driving module of the resonant circuit LLC provided in this application can generate Pulse Width Modulation (PWM) driving signals required by the eight driving signal input ports.

The drive module of the resonant circuit LLC comprises a periodic signal input port, a dead zone signal input port, a signal delay input port, a signal processing module and eight drive signal output ports; the eight driving signal output ports comprise four primary side output ports and four secondary side output ports; the periodic signal input port is used for inputting periodic signals, and the dead zone signal input port is used for inputting dead zone signals; the signal processing module is used for processing the periodic signal and the dead zone signal to generate four primary side switching tube driving signals and outputting the four primary side switching tube driving signals through four primary side output ports; the signal delay input port is used for inputting a phase difference signal, and the signal processing module is further used for processing the periodic signal, the dead zone signal and the phase difference signal to generate four secondary-side switching tube driving signals and outputting the four secondary-side switching tube driving signals through the four secondary-side output ports. The LLC driving module can generate a primary side driving signal according to the periodic signal and the dead zone signal; meanwhile, a delay signal can be added on the basis of generating the primary side driving signal, and the secondary side driving signal is generated after processing, so that the primary side driving signal and the secondary side driving signal can meet the condition of a synchronous rectification function in circuit application, an additional circuit for generating the secondary side driving signal is not required to be added, and the reliability of the synchronous rectification function is improved. In addition, the LLC driving module in the application solves the simulation limitation of the MATLAB frequency conversion field, and widens the application of the MATLAB in the simulation field.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a driving module 100 of a resonant circuit LLC, which includes a periodic signal input port I1, a dead zone signal input port I2, a signal delay input port I3, a signal processing module 200, and eight driving signal output ports;

the eight driving signal output ports comprise four primary side output ports O1, O2, O3 and O4 and four secondary side output ports O5, O6, O7 and O8;

the periodic signal input port I1 is used for inputting a periodic signal, and the dead zone signal input port I2 is used for inputting a dead zone signal; the signal processing module 200 is configured to process the periodic signal and the dead zone signal to generate four primary side switching tube driving signals, and the four primary side output ports O1, O2, O3, and O4 are configured to output four primary side switching tube driving signals;

the signal delay input port I3 is used for inputting a phase difference signal, the signal processing module 200 is further used for processing the periodic signal, the dead zone signal and the phase difference signal to generate four secondary-side switch tube driving signals, and the four secondary-side output ports O5, O6, O7 and O8 are used for outputting four secondary-side switch tube driving signals.

In one possible example, the signal processing module 200 includes a first signal processing module 210 and a second signal processing module 220;

the first signal processing module 210 is connected to the second signal processing module 220, the periodic signal input port I1, the dead zone signal input port I2, and the four primary side output ports O1, O2, O3, and O4;

the second signal processing module 220 connects the signal delay input port I3 and the four secondary side output ports O5, O6, O7, and O8.

In this example, the primary side driving signal and the secondary side driving signal are both generated according to the periodic signal input by the periodic signal input port I1 and the dead zone signal input by the dead zone signal input port I2, so that the reliability of the synchronous rectification process using the primary side driving signal and the secondary side driving signal is improved.

In one possible example, referring to fig. 2, fig. 2 is a circuit diagram of the first signal processing module 210 in fig. 1. The four primary-side output ports include a first output port O1, a second output port O2, a third output port O3 and a fourth output port O4, the driving signals output by the first output port O1 and the fourth output port O4 are the same, and the driving signals output by the second output port O2 and the third output port O3 are the same;

the first signal processing module 210 includes a first circuit 211 and a second circuit 212; the first circuit 211 is configured to provide driving signals output through the first output port O1 and the fourth output port O4, and the second circuit 212 is configured to provide driving signals output through the second output port O2 and the third output port O3.

The driving signal output by the first output port O1 is a first driving signal, and the driving signal output by the second output port O2 is a second driving signal; the third output port O3 outputs the third driving signal, and the fourth output port O4 outputs the fourth driving signal; the first drive signal and the fourth drive signal are the same, the second drive signal and the third drive signal are the same, and the first drive signal/the fourth drive signal and the second drive signal/the third drive signal are complementary drive signals with respect to each other.

It can be seen that in this example, the first signal processing module 210 can process the input periodic signal and the dead band signal to generate the required primary side drive signal.

In one possible example, as shown in fig. 2, the first circuit 211 includes a sawtooth wave generation module T1, a first amplitude positioning module P1, a first adder-subtractor a1, a second adder-subtractor a2, a first constant module C1, a second constant module C2, a first condition selection switch S1, a second condition selection switch S2, a first sign module B1, a first clipping module D1, and a first multiplication module M1;

an input end of the sawtooth wave generation module T1 is connected to the periodic signal input port I1, and an output end of the sawtooth wave generation module T1 is connected to a negative input end of the first adder-subtractor A1, a second input end of the first condition selection switch S1, a third input end of the first condition selection switch S1 and a second input end of the second condition selection switch S2; the first amplitude positioning module P1 is connected to the positive input end of the first adder-subtractor A1; the output end of the first adder-subtractor A1 is connected with the first input end of the first condition selection switch S1;

the first constant module C1 is connected to a first input of the second condition selection switch S2, and the second constant module C2 is connected to a third input of the second condition selection switch S2;

the output end of the first conditional selecting switch S1 is connected to the positive input end of the second adder-subtractor a2, the negative input end of the second adder-subtractor a2 is connected to the dead zone signal input port I2, the output end of the second adder-subtractor a2 is connected to the input end of the first sign module B1, the output end of the first sign module B1 is connected to the input end of the first amplitude limiting module D1, the output end of the first amplitude limiting module D1 is connected to the input end of the first multiplication module M1, and the input end of the first multiplication module M1 is further connected to the output end of the second conditional selecting switch S2.

The output end of the first multiplication module M1 is connected to the first output port O1 and the fourth output port O4.

The sawtooth wave generating module T1 is configured to generate a sawtooth wave according to an input periodic signal, where a period of the generated sawtooth wave is the same as a period of the input periodic signal, and an amplitude of the sawtooth wave is 4096. The amplitude positioning module is used for setting the amplitude, and the amplitude is constant at a set value after being processed by the amplitude positioning module no matter how the frequency of the input signal changes; the setting value of the first amplitude-positioning module P1 is 4096, and the amplitude of the signal processed by the first amplitude-positioning module P1 is 4096. The adder-subtractor may perform addition and subtraction calculation with respect to the input signal, the signal input from the positive input terminal of the adder-subtractor takes a positive value of the input signal, the signal input from the negative input terminal of the adder-subtractor takes a negative value of the input signal, and the adder-subtractor adds signals of all the output terminals and outputs the signals from the output terminals. The value of the first constant block is constant at 0 and the value of the second constant block is constant at 1. The condition selection switch is provided with three input ports, the middle port and the second input port are condition judgment ports, specific judgment conditions can be set in the module according to specific conditions, and when the conditions are met, the output port is connected with the first input port and the uppermost input port in the condition selection switch in the graph so as to output signals output by the first input port; and when the condition is not met, the output port is connected with the third input port and the lowest input port in the condition selection switch in the figure so as to output the signal input by the third input port. The output is 1 when the value of the input port of the symbol module is greater than 0, and the output is-1 when the value of the input is less than 0. The clipping module is used to limit the range of the output signal value. The multiplication operation is to multiply the two input signals and output the result of the multiplication.

In one possible example, as shown in fig. 2, the second circuit 212 includes a third adder-subtractor a3, a second amplitude positioning module P2, a second sign module B2, a second clipping module D2, a logical negation module N1, and a second multiplication module M2;

a first negative input end of the third adder-subtractor A3 is connected to the output end of the first condition selecting switch S1, a second negative input end of the third adder-subtractor A3 is connected to the dead zone signal input port I2, and a positive input end of the third adder-subtractor A3 is connected to the second amplitude localization module P2;

an output terminal of the third adder-subtractor a3 is connected to an input terminal of the second symbol module B2, an output terminal of the second symbol module B2 is connected to an input terminal of the second clipping module D2, and an output terminal of the second clipping module D2 is connected to an input terminal of the second multiplication module M2;

the input end of the logical negation module N1 is connected with the output end of the second condition selection switch S2, and the output end of the logical negation module N1 is connected with the input end of the second multiplication operation module M2; the output end of the second multiplication module M2 is connected to the second output port O2 and the third output port O3.

As can be seen, in this example, the second circuit 212 can generate the second primary side driving signal output by the second output port O2 and the third primary side driving signal output by the third output port O3.

In one possible example, referring to fig. 3, fig. 3 is a circuit diagram of the second signal processing module 220 in fig. 1. The four secondary output ports include a fifth output port O5, a sixth output port O6, a seventh output port O7 and an eighth output port O8, the drive signals output by the fifth output port O5 and the eighth output port O8 are the same, and the drive signals output by the sixth output port O6 and the seventh output port O7 are the same;

the second signal processing module 220 includes a third circuit 221 and a fourth circuit 222; the third circuit 221 is configured to provide driving signals output through the sixth output port O6 and the seventh output port O7, and the fourth circuit 222 is configured to provide driving signals output through the fifth output port O5 and the eighth output port O8.

As can be seen, in this example, the second signal processing module 220 may generate four secondary side driving signals according to the signal processed by the first signal processing module 210 and the phase difference signal provided by the signal delay port I3; no additional hardware sampling circuit is needed; the complexity of generating the secondary side driving signal is simplified; meanwhile, a primary side driving signal and a secondary side driving signal are generated by using the same period signal and the dead zone signal, so that the reliability of rectification by using the primary side driving signal and the secondary side driving signal is improved; the production cost is reduced, and the material resource is saved.

In one possible example, as shown in fig. 3, the third circuit 221 includes a fourth adder-subtractor a4, a fifth adder-subtractor a5, a sixth adder-subtractor a6, a first adder F1, a third symbol module B3, a fourth symbol module B4, a third clipping module D3, a fourth clipping module D4, and a third multiplication module M3;

an input of the first adder F1 is connected to the dead band signal port I2, the second magnitude localization module P2 and the signal delay input port I3, and an output of the first adder F1 is connected to a negative input of the fourth adder A4; a positive input end of the fourth adder-subtractor a4 is connected to an output end of the sawtooth wave generation module T1, and an output end of the fourth adder-subtractor a4 is connected to an input end of the third sign module B3; an output of the third sign module B3 is connected to an input of the third clipping module D3; the output end of the third amplitude limiting module D3 is connected to the input end of the third multiplication operation module M3;

a positive input terminal of the sixth adder-subtractor a6 is connected to the first amplitude positioning module P1, a negative input terminal of the sixth adder-subtractor a6 is connected to the signal delay input port I3, and an output terminal of the sixth adder-subtractor a6 is connected to a positive input terminal of the fifth adder-subtractor a 5; a negative input end of the fifth subtractor a5 is connected to an output end of the sawtooth wave generation module T1, an output end of the fifth subtractor a5 is connected to an input end of the fourth sign module B4, an output end of the fourth sign module B4 is connected to an input end of the fourth clipping module D4, and an output end of the fourth clipping module D4 is connected to an input end of the third multiplication module M3;

an output terminal of the third multiply operation module M3 is connected to the sixth output port O6 and the seventh output port O7.

The adder can add the signals input by all the input ends and generate an added result.

As can be seen, in the present example, the third circuit 221 may generate the sixth secondary driving signal output from the sixth output port O6 and the seventh secondary driving signal output from the seventh output port O7.

In one possible example, as shown in fig. 3, the fourth circuit 222 includes a seventh adder-subtractor a7, an eighth adder-subtractor A8, a ninth adder-subtractor a9, a second adder F2, a fifth symbol module B5, a sixth symbol module B6, a fifth clipping module D5, a sixth clipping module D6, and a fourth multiplication module M4;

a positive input of the second adder F2 is connected to the dead band signal input port I2 and the signal delay input port I3, and an output of the second adder F2 is connected to a negative input of the seventh adder a 7; a positive input end of the seventh adder-subtractor a7 is connected to the output end of the sawtooth wave generation module T1, and an output end of the seventh adder-subtractor a7 is connected to an input end of the fifth sign module B5; an output of the fifth sign module B5 is connected to an input of the fifth clipping module D5; the output end of the fifth amplitude limiting module D5 is connected with the input end of the fourth multiplication operation module M4;

a positive input terminal of the eighth adder-subtractor A8 is connected to the second amplitude localization module P2, a negative input terminal of the eighth adder-subtractor A8 is connected to the signal delay input port I3, and an output terminal of the eighth adder-subtractor A8 is connected to a positive input terminal of the ninth adder-subtractor a 9; a negative input end of the ninth adder-subtractor a9 is connected to an output end of the sawtooth wave generation module T1, and an output end of the ninth adder-subtractor a9 is connected to an input end of the sixth sign module B6; an output of the sixth sign module B6 is connected to an input of the sixth clipping module D6; the output end of the sixth amplitude limiting module D6 is connected with the input end of the fourth multiplication operation module M4;

the output end of the fourth multiplication module M4 is connected to the fifth output port O5 and the eighth output port O8.

As can be seen, in this example, the fourth circuit 222 may generate the fifth secondary drive signal output by the fifth output port O5 and the eighth secondary drive signal output by the eighth output port O8.

In one possible example, referring to fig. 4, fig. 4 is a schematic circuit diagram of a sawtooth wave module T1 in fig. 2, wherein the sawtooth wave generating module T1 includes a time signal module K1, a multiplication and division operation module H1, a third amplitude positioning module P3, a remainder value module R1, and a signal processing module G1;

a first multiplication input end of the multiplication-division operation module H1 is connected to the time signal module K1, a second multiplication input end of the multiplication-division operation module H1 is connected to the third amplitude limiting module P3, a division input end of the multiplication-division operation module H1 is connected to the periodic signal input port I1, and an output end of the multiplication-division operation module H1 is connected to a first input port of the numerical value remainder module R1; a second input of the numerical remainder module R1 is connected to the third magnitude limiting module P3; the output end of the numerical value residue taking module R1 is connected with the input end of the signal processing module G1, and the output end of the signal processing module G1 is connected with the output end of the sawtooth wave generating module T1.

The time signal module can output a set constant time value or a time value which changes along with time; the multiplication-division operation module can perform multiplication-division operation on the input signal, and the specific operation step can be that the multiplication-division operation module multiplies the signal input by the multiplication input end, and then divides the signal input by the division input end to obtain the signal output by the output end. The numerical value residue taking module comprises two input ports, wherein a signal input by one input port is used as a dividend, a signal input by the other input port is used as a divisor, and the output port outputs a residue after division. The signal processing module can output the signals under the condition that the input signals meet preset signal quality or preset signal output conditions. The third amplitude location module P3 sets the amplitude to 4096. The carrier signal output by the sawtooth wave generation module T1 has a constant amplitude of 4096 and a period equal to the period of the input periodic signal.

Therefore, in this example, the sawtooth wave generation module can generate a required carrier signal according to the periodic signal, and frequency conversion control of the carrier signal is realized.

It should be noted that, for the sake of simplicity, the embodiments of the present application are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application with specific examples, and the above description of the embodiments is only provided to help understand the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.