阅读说明：本技术 一种摩托车三相调压器的控制方法及控制系统 (Control method and control system of three-phase voltage regulator of motorcycle ) 是由 李红星 付强 王开云 于 2020-05-20 设计创作，主要内容包括：本发明公开了一种摩托车三相调压器的控制方法及控制系统,所述控制方法中的三相调压器为三相全波整流电路,设置一个电压最大值V<Sub>MAX</Sub>和一个电压最小值V<Sub>MIN</Sub>,所述电压最大值V<Sub>MAX</Sub>大于所述电压最小值V<Sub>MIN</Sub>,通过按设定的整流方法对所述三相调压器的整流状态进行控制,以使得所述三相调压器的输出电压波形呈在所述电压最大值V<Sub>MAX</Sub>和所述电压最小值V<Sub>MIN</Sub>之间变化的三角波曲线。本发明能实现三相调压器的三相输出功率平衡,从而避免局部温度过高导致的三相调压器可靠性降低。(The invention discloses a control method and a control system of a three-phase voltage regulator of a motorcycle, wherein the three-phase voltage regulator in the control method is a three-phase full-wave rectification circuit and is provided with a voltage maximum value V MAX And a voltage minimum value V MIN Said maximum value of voltage V MAX Greater than the voltage minimum value V MIN Controlling the rectification state of the three-phase voltage regulator according to a set rectification method to enable the output voltage waveform of the three-phase voltage regulator to be at the voltage maximum value V MAX And said voltage minimum value V MIN A triangular wave curve of change therebetween. The invention can realize the three-phase output power balance of the three-phase voltage regulator, thereby avoiding the reliability reduction of the three-phase voltage regulator caused by overhigh local temperature.)

1. A control method for three-phase voltage regulator of motorcycle features that a three-phase full-wave rectifier is used as its three-phase voltage regulator_MAXAnd a voltage minimum value V_MINSaid maximum value of voltage V_MAXGreater than the voltage minimum value V_MINControlling the rectification state of the three-phase voltage regulator according to a set rectification method to enable the output voltage waveform of the three-phase voltage regulator to be in the voltage maximumLarge value of V_MAXAnd said voltage minimum value V_MINThe triangular wave curve is changed, so that the output voltage median of the three-phase voltage regulator reaches the control target voltage V_SETThe control target voltage V_SETThe calculation method comprises the following steps:

2. a control method of a three-phase voltage regulator of a motorcycle according to claim 1, wherein the set rectifying method is:

when the output voltage of the three-phase voltage regulator is reduced to the voltage minimum value V_MINAnd the rectification output of the three-phase voltage regulator enables the output voltage of the three-phase voltage regulator to continuously rise until the output voltage of the three-phase voltage regulator rises to the maximum voltage value V_MAX；

When the output voltage of the three-phase voltage regulator rises to the maximum voltage value V_MAXWhen the three-phase voltage regulator stops rectification output, the output voltage of the three-phase voltage regulator is continuously reduced until the output voltage of the three-phase voltage regulator is reduced to the voltage minimum value V_MIN。

3. A control method for a three-phase voltage regulator of a motorcycle according to claim 1, characterized in that said maximum voltage value V_MAXAnd said voltage minimum value V_MINThe following formula is selected:

V_MAX＝V_SET+ΔV

V_MIN＝V_SET-ΔV

in the formula: Δ V is the standard deviation value.

4. A control system for realizing the control method of the motorcycle three-phase voltage regulator according to claim 1, characterized by comprising a three-phase voltage regulator and a control circuit, wherein the three-phase voltage regulator is a three-phase full-wave rectification circuit, and the control circuit comprises V_MINVoltage identification unit, V_MAXVoltage ofThe device comprises an identification unit, a logic processing unit and a three-phase switching element driving unit;

the V is_MINThe voltage identification unit is used for comparing the output voltage of the three-phase voltage regulator with the minimum voltage value V_MINComparing, and when the output voltage of the three-phase voltage regulator is less than or equal to the minimum voltage value V_MINOutputting an effective signal VL to the logic processing unit;

the V is_MAXThe voltage identification unit is used for comparing the output voltage of the three-phase voltage regulator with the maximum voltage value V_MAXComparing, and when the output voltage of the three-phase voltage regulator is greater than or equal to the maximum voltage value V_MAXOutputting an effective signal VH to the logic processing unit;

the logic processing unit is used for receiving the V_MINVoltage identification unit and the V_MAXThe signal of the voltage identification unit is used as an input signal, and a rectification or rectification stopping signal is sent to the three-phase switching element driving unit according to the received input signal;

the three-phase switching element driving unit is used for receiving a rectification or rectification stopping signal sent by the logic processing unit and sending or stopping sending a control signal to a switching element in the three-phase voltage regulator according to the received signal so as to enable the three-phase voltage regulator to carry out rectification output or stop rectification output;

the logic unit receiving the V_MINWhen an effective signal VL of the voltage identification unit is received, the logic unit sends a rectification signal to the three-phase switching element driving unit, and the three-phase switching element driving unit sends a control signal to a switching element in the three-phase voltage regulator so as to enable the three-phase voltage regulator to output the rectification signal;

the logic unit receiving the V_MAXWhen the effective signal VH of the voltage identification unit, the logic unit sends a rectification stopping signal to the three-phase switch element driving unit, the three-phase switch element driving unit stops sending a control signal to the switch element in the three-phase voltage regulator, so that the three-phase voltage regulator stops rectification output.

5. A control system for a three-phase voltage regulator of a motorcycle as claimed in claim 4, wherein said V_MINThe input of the voltage identification unit is connected with the output of the three-phase voltage regulator so as to collect the output voltage of the three-phase voltage regulator, V_MINThe output end of the voltage identification unit is connected with the logic processing unit, and V_MINThe voltage identification unit collects the output voltage of the three-phase voltage regulator and the minimum voltage V_MINComparing, and when the output voltage of the three-phase voltage regulator is less than or equal to the minimum voltage value V_MINOutputting an effective signal VL to the logic processing unit;

the V is_MAXThe input of the voltage identification unit is connected with the output of the three-phase voltage regulator so as to collect the output voltage of the three-phase voltage regulator, V_MAXThe output end of the voltage identification unit is connected with the logic processing unit, and V_MAXThe voltage identification unit collects the output voltage of the three-phase voltage regulator and the maximum voltage V_MAXComparing, and when the output voltage of the three-phase voltage regulator is less than or equal to the maximum voltage V_MAXAnd outputting an effective signal VH to the logic processing unit.

6. A control system for a three-phase voltage regulator of a motorcycle according to claim 4, wherein said logic unit receives said V_MINWhen the effective signal VL of the voltage identification unit is received by the logic unit, the logic unit continuously sends a rectification signal to the three-phase switching element driving unit, the three-phase switching element driving unit sends a control signal to the switching element in the three-phase voltage regulator, so that the three-phase voltage regulator rectifies and outputs until the logic unit receives the effective signal VL of the voltage identification unit_MAXA valid signal VH sent by the voltage identification unit;

when the logic unit is receiving the V_MAXWhen the voltage identification unit is in effective signal VH, the logic unit continuously sends out a rectification stopping signal to the three-phase switch element driving unit,the three-phase switch element driving unit stops sending control signals to the switch elements in the three-phase voltage regulator to enable the three-phase voltage regulator to stop rectification output until the logic unit receives the V_MINThe voltage identification unit sends out a valid signal VL.

7. The control system of a three-phase voltage regulator of a motorcycle of claim 4, wherein the output end of the logic processing unit is connected to the input end of the three-phase switching element driving unit, the output ends of the three-phase switching element driving unit are three, and the three output ends of the three-phase switching element driving unit are respectively connected to the three-phase switching elements of the three-phase voltage regulator in a one-to-one correspondence manner.

8. The control system of the motorcycle three-phase voltage regulator according to claim 7, wherein an upper bridge arm of the three-phase voltage regulator comprises a silicon controlled rectifier SCR1, a silicon controlled rectifier SCR2 and a silicon controlled rectifier SCR3, a lower bridge arm of the three-phase voltage regulator comprises a diode D1, a diode D2 and a diode D3, and three output ends of the three-phase switching element driving unit are respectively connected with a control pole of a silicon controlled rectifier SCR1, a control pole of a silicon controlled rectifier SCR2 and a control pole of a silicon controlled rectifier SCR3 in a one-to-one correspondence manner.

9. The control system of the motorcycle three-phase voltage regulator according to claim 7, wherein an upper bridge arm of the three-phase voltage regulator includes a diode D4, a diode D5 and a diode D6, a lower bridge arm of the three-phase voltage regulator includes a diode D7, a diode D8, a diode D9, a thyristor SCR4, a thyristor SCR5 and a thyristor SCR6, a thyristor SCR4, a thyristor SCR5 and a thyristor SCR6 are respectively connected in one-to-one correspondence and reverse parallel with the diode D7, the diode D8 and the diode D9, and three output ends of the three-phase switching element driving unit are respectively connected in one-to-one correspondence with a control pole of the thyristor SCR4, a control pole of the thyristor SCR5 and a control pole of the thyristor SCR 6.

Technical Field

The invention relates to the technical field of motorcycle voltage conversion, in particular to a control method and a control system of a three-phase voltage regulator of a motorcycle.

Background

The control mode of the existing three-phase voltage regulator of the motorcycle adopts a rectifying circuit constructed by silicon controlled rectifier, diode/MOSFET and MOSFET, the three-phase current of the magnetor ACG is loaded on a rectifying circuit and is output to a load after being rectified by the rectifying circuit, a standard reference voltage is set, when the output voltage of the voltage regulator is higher than the reference voltage, a control circuit outputs a control signal to control a main circuit switching element of the voltage regulator to stop rectifying, and when the output voltage of the voltage regulator is lower than the reference voltage, the control circuit outputs the control signal to control the main circuit switching element of the voltage regulator to rectify and.

Most of the voltage regulators do not carry out unified coordination and planning of three-phase pulses, the output voltage of a port of the voltage regulator is influenced by load change and magnetor ACG rotating speed change, the time constant of an internal filtering link of the voltage regulator is relatively fixed and cannot be matched with the load change and the magnetor ACG rotating speed change, for example, when the output voltage of the voltage regulator is higher than a standard reference voltage, the voltage regulator may be that any one of A, B, C three phases is rectifying and outputting, and at the moment, a control circuit outputs a control signal to control a switching element of a corresponding phase of a main circuit of the voltage regulator to stop rectification and output; when the output voltage is lower than the standard reference voltage due to the fact that the voltage regulator stops rectifying, the control circuit outputs a control signal to enable the switching elements of the corresponding phase of the main circuit of the voltage regulator to rectify and output, at the moment, the voltage regulator can also be any one of A, B, C three-phase rectified outputs, proportion and time sequence of the voltage regulator control output distributed on each phase are random, problems of unbalanced three-phase output power of the voltage regulator, unbalanced ACG three-phase output power of a magneto, rich heat dissipation capacity of a radiator of the voltage regulator and the like are caused due to the randomness, and problems of overhigh local temperature rise, lowered reliability of the whole voltage regulator and the like are easily caused due to unbalanced three-phase power of the.

Disclosure of Invention

Aiming at the defects in the prior art, the technical problems to be solved by the invention are as follows: how to provide a control method of a three-phase voltage regulator of a motorcycle, which can realize the three-phase output power balance of the three-phase voltage regulator, thereby avoiding the reliability reduction of the three-phase voltage regulator caused by overhigh local temperature.

In addition, the invention also provides a control system of the three-phase voltage regulator of the motorcycle, so as to realize the three-phase output power balance of the three-phase voltage regulator, thereby avoiding the overhigh local temperature and improving the overall reliability of the three-phase voltage regulator.

In order to solve the technical problems, the invention adopts the following technical scheme:

a control method for three-phase voltage regulator of motorcycle features that the three-phase voltage regulator is a three-phase full-wave rectifier and has a maximum voltage value V_MAXAnd a voltage minimum value V_MINSaid maximum value of voltage V_MAXGreater than the voltage minimum value V_MINControlling the rectification state of the three-phase voltage regulator according to a set rectification method to enable the output voltage waveform of the three-phase voltage regulator to be at the voltage maximum value V_MAXAnd said voltage minimum value V_MINThe triangular wave curve is changed, so that the output voltage median of the three-phase voltage regulator reaches the control target voltage V_SETThe control target voltage V_SETThe calculation method comprises the following steps:

the working principle of the invention is as follows: when the control method of the invention is adopted, the maximum voltage value V is set_MAXMinimum sum voltage V_MINThe control method of the invention can lead the output voltage waveform of the three-phase voltage regulator to be always kept at the voltage maximum value V by reasonably controlling the rectification state of the three-phase voltage regulator_MAXMinimum sum voltage V_MINThe triangular wave curve is changed, so that the output voltage median of the three-phase voltage regulator reaches the control target voltage V_SETRealize the control of the maximum voltage value V_MAXMinimum sum voltage V_MINFor the purpose of indirectly controlling the target voltage.

The control method is characterized in that the output voltage of the three-phase voltage regulator is at the maximum voltage value V_MAXMinimum sum voltage V_MINThe change is completed in a certain time, and the A, B, C three-phase alternating-current voltage generated by the magneto ACG has inherent time sequence and is continuous, so that the output voltage of the three-phase voltage regulator is at the maximum voltage value V_MAXMinimum sum voltage V_MINThe variation between the three phases is evenly and orderly distributed on A, B, C three phases, so that the three-phase output power of the three-phase voltage regulator is balanced, and the three-phase output power of the magneto ACG is balanced.

The invention has the beneficial effects that: compared with the prior art, the invention has the following advantages:

1) the three-phase output power of the magneto ACG is balanced, constant direct current components cannot be generated on a stator winding, an inherent damping torque cannot be generated, the load torque is balanced when the magneto ACG operates, and low-frequency noise is avoided.

2) The three-phase power of the three-phase voltage regulator is balanced, the three-phase loss of the three-phase voltage regulator is balanced, the heat dissipation measure of the three-phase voltage regulator is more economical, and compared with the extreme heat dissipation requirement that at least 30% of heat dissipation needs to be increased to deal with no output of two phases and full output of the remaining phases in the prior art, the heat dissipation cost of the three-phase voltage regulator is greatly reduced.

3) The junction temperature requirement of each switching element of the three-phase voltage regulator is reduced, and the junction temperature requirement of three-phase power balance of the three-phase voltage regulator is lower than the junction temperature requirement in unbalanced condition in the prior art, so that the junction temperature requirement of the three-phase power balance control circuit is lower, and the cost is lower.

4) The three-phase power of the three-phase voltage regulator is balanced, so that the local temperature is not overhigh, and the reliability of the whole three-phase voltage regulator is greatly improved.

Preferably, the set rectification method comprises:

when the output voltage of the three-phase voltage regulator is reduced to the voltage minimum value V_MINAnd the rectification output of the three-phase voltage regulator enables the output voltage of the three-phase voltage regulator to continuously rise until the output voltage of the three-phase voltage regulator rises to the maximum voltage value V_MAX；

When the output voltage of the three-phase voltage regulator rises to the maximum voltage value V_MAXWhen the three-phase voltage regulator stops rectification output, the output voltage of the three-phase voltage regulator is continuously reduced until the output voltage of the three-phase voltage regulator is reduced to the voltage minimum value V_MIN。

Thus, due to magneto-electricityA, B, C three-phase current output by the ACG is orderly changed and mutually differed by 120 degrees of electrical angle, at a certain moment, the A phase positive half-wave rectification is output, the subsequent B phase and then C phase positive half-wave rectification are output, the three-phase voltage regulator continuously rectifies and enables the output voltage to continuously rise, the always maintained rectification output state is uniformly and orderly distributed in A, B, C three phases until the output voltage of the three-phase voltage regulator reaches the maximum value V of the set upper limit voltage_MAX(ii) a When the output voltage of the three-phase voltage regulator reaches the maximum value V of the set upper limit voltage_MAXWhen the three-phase rectification is turned off, the three-phase voltage regulator does not output, and the system is provided by the storage battery until the output voltage of the three-phase voltage regulator drops to reach the set minimum value V of the lower limit voltage_MINWhen the current is over; when the output voltage of the three-phase voltage regulator drops to reach the set minimum lower limit voltage V_MINWhen the three-phase rectification is restarted, the three-phase voltage regulator rectifies output, the three-phase voltage regulator continuously rectifies and enables the output voltage to continuously rise, the always-maintained rectified output state is uniformly and orderly distributed in A, B, C three phases until the output voltage of the three-phase voltage regulator reaches the maximum value V of the set upper limit voltage_MAXRepeating the steps to form the waveform of the output voltage of the three-phase voltage regulator to be enveloped at the maximum voltage value V_MAXMinimum sum voltage V_MINThe three-phase output power of the three-phase voltage regulator is always kept balanced by the rising and falling voltage triangular wave curves.

Preferably, the voltage maximum value V_MAXAnd said voltage minimum value V_MINThe following formula is selected:

V_MAX＝V_SET+ΔV

V_MIN＝V_SET-ΔV

in the formula: Δ V is the standard deviation value.

Thus, the standard deviation value can be selected according to the actually acceptable deviation range, and then the maximum voltage value V is further determined_MAXMinimum sum voltage V_MINBy controlling the maximum voltage value V_MAXMinimum sum voltage V_MINFor the purpose of indirectly controlling the target voltage.

A control system for realizing the control method of the motorcycle three-phase voltage regulator comprises the three-phase voltage regulator and a control circuit, wherein the three-phase voltage regulator is a three-phase full-wave rectification circuit, and the control circuit comprises a V_MINVoltage identification unit, V_MAXThe device comprises a voltage identification unit, a logic processing unit and a three-phase switching element driving unit;

the V is_MINThe voltage identification unit is used for comparing the output voltage of the three-phase voltage regulator with the minimum voltage value V_MINComparing, and when the output voltage of the three-phase voltage regulator is less than or equal to the minimum voltage value V_MINOutputting an effective signal VL to the logic processing unit;

the V is_MAXThe voltage identification unit is used for comparing the output voltage of the three-phase voltage regulator with the maximum voltage value V_MAXComparing, and when the output voltage of the three-phase voltage regulator is greater than or equal to the maximum voltage value V_MAXOutputting an effective signal VH to the logic processing unit;

the logic processing unit is used for receiving the V_MINVoltage identification unit and the V_MAXThe signal of the voltage identification unit is used as an input signal, and a rectification or rectification stopping signal is sent to the three-phase switching element driving unit according to the received input signal;

the three-phase switching element driving unit is used for receiving a rectification or rectification stopping signal sent by the logic processing unit and sending or stopping sending a control signal to a switching element in the three-phase voltage regulator according to the received signal so as to enable the three-phase voltage regulator to carry out rectification output or stop rectification output;

the logic unit receiving the V_MINWhen an effective signal VL of the voltage identification unit is received, the logic unit sends a rectification signal to the three-phase switching element driving unit, and the three-phase switching element driving unit sends a control signal to a switching element in the three-phase voltage regulator so as to enable the three-phase voltage regulator to output the rectification signal;

the logic unit receiving the V_MAXEffective signal VH of voltage identification unit, theThe logic unit sends out and stops the rectification signal and give three-phase switching element drive unit, three-phase switching element drive unit is right switching element among the three-phase voltage regulator stops sending control signal, so that three-phase voltage regulator stops the rectification output.

Thus, using V_MINVoltage identification unit and V_MAXThe voltage identification unit respectively compares the output voltage of the three-phase voltage regulator with the minimum voltage V_MINMaximum sum voltage V_MAXComparing, and transmitting the comparison result to the logic processing unit, which then receives V_MINVoltage identification unit and V_MAXThe signal of the voltage identification unit sends a rectification or rectification stopping signal to the three-phase switching element driving unit, and the three-phase switching element driving unit sends or stops sending a control signal to the switching elements in the three-phase voltage regulator so as to enable the three-phase voltage regulator to carry out rectification output or stop carrying out rectification output. Therefore, the control system of the invention can ensure that the output voltage waveform of the three-phase voltage regulator is always kept at the maximum voltage V by reasonably controlling the rectification state of the three-phase voltage regulator_MAXMinimum sum voltage V_MINA triangular wave curve is changed between the three-phase voltage regulator and the three-phase voltage regulator_MAXMinimum sum voltage V_MINThe change is completed by a certain time, and the A, B, C three-phase voltage generated by the magneto ACG has inherent time sequence and is continuous, so that the output voltage of the three-phase voltage regulator is at the maximum voltage V_MAXMinimum sum voltage V_MINThe variation between the three phases is evenly and orderly distributed on A, B, C three phases, so that the three-phase output power of the three-phase voltage regulator is balanced, and the three-phase output power of the magneto ACG is balanced.

Preferably, said V_MINThe input of the voltage identification unit is connected with the output of the three-phase voltage regulator so as to collect the output voltage of the three-phase voltage regulator, V_MINThe output end of the voltage identification unit is connected with the logic processing unit, and V_MINThe voltage identification unit collects the output voltage of the three-phase voltage regulator and the minimum voltage V_MINComparing, and when the output voltage of the three-phase voltage regulator is less than or equal to the minimum voltage value V_MINOutputting an effective signal VL to the logic processing unit;

the V is_MAXThe input of the voltage identification unit is connected with the output of the three-phase voltage regulator so as to collect the output voltage of the three-phase voltage regulator, V_MAXThe output end of the voltage identification unit is connected with the logic processing unit, and V_MAXThe voltage identification unit collects the output voltage of the three-phase voltage regulator and the maximum voltage V_MAXComparing, and when the output voltage of the three-phase voltage regulator is less than or equal to the maximum voltage V_MAXAnd outputting an effective signal VH to the logic processing unit.

Thus, V_MINVoltage identification unit and V_MAXThe voltage identification unit is respectively connected with the output end of the three-phase voltage regulator so as to collect the output voltage of the three-phase voltage regulator, and simultaneously V_MINVoltage identification unit and V_MAXThe output terminals of the voltage identification units are also connected to the logic units, respectively, in order to output the results of the respective comparisons to the logic units.

Preferably, when said logic unit receives said V_MINWhen the effective signal VL of the voltage identification unit is received by the logic unit, the logic unit continuously sends a rectification signal to the three-phase switching element driving unit, the three-phase switching element driving unit sends a control signal to the switching element in the three-phase voltage regulator, so that the three-phase voltage regulator rectifies and outputs until the logic unit receives the effective signal VL of the voltage identification unit_MAXA valid signal VH sent by the voltage identification unit;

when the logic unit is receiving the V_MAXWhen the effective signal VH of the voltage identification unit, the logic unit continuously sends a rectification stopping signal to the three-phase switch element driving unit, the three-phase switch element driving unit is right, the switch element in the three-phase voltage regulator stops sending a control signal, so that the three-phase voltage regulator stops rectification output until the logic unit receives the V_MINThe voltage identification unit sends out a valid signal VL.

Thus, when the output voltage of the three-phase voltage regulator is less than or equal to the minimum voltage value V_MINWhen, V_MINThe voltage identification unit sends an effective signal VL to the logic processing unit, and the logic processing unit continuously sends a rectification signal to the three-phase switching element driving unit after receiving the effective signal VL until the logic unit receives V_MAXAn effective signal VH sent by the voltage identification unit, wherein the output voltage of the three-phase voltage regulator is equal to the maximum voltage V_MAX(ii) a When the output voltage of the three-phase voltage regulator is equal to the maximum voltage value V_MAXSo that V_MAXWhen the voltage identification unit sends an effective signal VH to the logic unit, the logic unit receives the effective signal and continuously sends a rectification stopping signal to the three-phase switching element driving unit until the logic unit receives V_MINAn effective signal VL sent by the voltage identification unit, wherein the output voltage of the three-phase voltage regulator is equal to the minimum voltage V_MINAnd so on.

Because A, B, C three-phase currents output by the magneto ACG are sequentially changed and differ from each other by 120 degrees of electrical angle, at a certain moment, the A-phase positive half-wave rectification is output, the subsequent B-phase positive half-wave rectification and then the C-phase positive half-wave rectification are output, the three-phase voltage regulator continuously rectifies and enables the output voltage to continuously rise, the always-maintained rectification output state is uniformly and sequentially distributed to A, B, C three phases until the output voltage of the three-phase voltage regulator reaches the maximum value V of the set upper limit voltage_MAX(ii) a When the output voltage of the three-phase voltage regulator reaches the maximum value V of the set upper limit voltage_MAXWhen the three-phase rectification is turned off, the three-phase voltage regulator does not output, and the system is provided by the storage battery until the output voltage of the three-phase voltage regulator drops to reach the set minimum value V of the lower limit voltage_MINWhen the current is over; when the output voltage of the three-phase voltage regulator drops to reach the set minimum lower limit voltage V_MINWhen the three-phase rectification is restarted, the three-phase voltage regulator rectifies output, the three-phase voltage regulator continuously rectifies and enables the output voltage to continuously rise, the always-maintained rectified output state is uniformly and orderly distributed in A, B, C three phases until the output voltage of the three-phase voltage regulator reaches the maximum value V of the set upper limit voltage_MAXRepeating the steps to form the waveform of the output voltage of the three-phase voltage regulator into an envelopeAt maximum voltage V_MAXMinimum sum voltage V_MINThe three-phase output power of the three-phase voltage regulator is always kept balanced by the rising and falling voltage triangular wave curves.

Preferably, the output end of the logic processing unit is connected with the input end of the three-phase switch element driving unit, the output ends of the three-phase switch element driving unit are three, and the three output ends of the three-phase switch element driving unit are respectively connected with the three-phase switch elements in the three-phase voltage regulator in a one-to-one correspondence manner.

Thus, the output terminal of the logic processing unit is connected to the input terminal of the three-phase switching element driving unit to transmit the control signal of the logic processing unit to the three-phase switching element driving unit, the three output ends of the three-phase switch element driving unit are respectively connected with the three-phase switch elements in the three-phase voltage regulator in a one-to-one correspondence manner, so that the three-phase switch element driving unit can control the switch elements in three phases, because the output of the three-phase voltage regulator is evenly and orderly distributed on A, B, C three phases, the three output ends of the three-phase switch element driving unit are respectively corresponding to the three-phase switch elements in the three-phase voltage regulator one by one, therefore, the three-phase switching element driving unit can effectively control the switching elements of any phase, and the normal and effective work of the switching elements of each phase when the output of the three-phase voltage regulator is distributed on each phase is ensured.

Preferably, the upper bridge arm of the three-phase voltage regulator comprises a silicon controlled rectifier SCR1, a silicon controlled rectifier SCR2 and a silicon controlled rectifier SCR3, the lower bridge arm of the three-phase voltage regulator comprises a diode D1, a diode D2 and a diode D3, and three output ends of the three-phase switching element driving unit are respectively connected with a control electrode of the silicon controlled rectifier SCR1, a control electrode of the silicon controlled rectifier SCR2 and a control electrode of the silicon controlled rectifier SCR3 in a one-to-one correspondence manner.

Therefore, the upper bridge arm of the three-phase voltage regulator is designed into three silicon controlled rectifiers (SCR 1-SCR 3), and three output ends of the three-phase switching element driving unit are respectively and correspondingly connected with control electrodes of the three silicon controlled rectifiers (SCR 1-SCR 3), so that when the logic state unit sends a control signal for rectifying or stopping rectifying to the three-phase switching element driving unit, the three-phase switching element driving unit can control the switching state of the corresponding silicon controlled rectifiers according to the working condition of the three-phase voltage regulator at the moment, and the control of the working state of the three-phase voltage regulator is realized. If the logic processing unit sends a rectification control signal to the three-phase switching element driving unit, the three-phase switching element driving unit sends a control signal to the control electrode of the corresponding silicon controlled rectifier, so that the conduction of the corresponding silicon controlled rectifier is realized, and the rectification of the three-phase voltage regulator is realized; when the logic processing unit sends a rectification stopping control signal to the three-phase switching element driving unit, the three-phase switching element driving unit stops sending a control signal to the control electrode of the corresponding silicon controlled rectifier, so that the corresponding silicon controlled rectifier is turned off, and the three-phase voltage regulator stops rectification.

Preferably, the upper bridge arm of the three-phase voltage regulator comprises a diode D4, a diode D5 and a diode D6, the lower bridge arm of the three-phase voltage regulator comprises a diode D7, a diode D8, a diode D9, a thyristor SCR4, a thyristor SCR5 and a thyristor SCR6, the thyristor SCR4, the thyristor SCR5 and the thyristor SCR6 are respectively connected with the diode D7, the diode D8 and the diode D9 in a one-to-one correspondence and in a reverse parallel manner, and three output ends of the three-phase switching element driving unit are respectively connected with a control pole of the thyristor SCR4, a control pole of the thyristor SCR5 and a control pole of the thyristor SCR6 in a one-to-one correspondence manner.

Thus, the lower bridge arm of the three-phase voltage regulator is designed into three diodes D7-D9 and three silicon controlled rectifiers SCR 4-SCR 6, and the three silicon controlled rectifiers SCR 4-SCR 6 and the three diodes D7-D9 are connected in one-to-one inverse parallel connection, when the silicon controlled rectifier of the lower bridge arm is conducted, the diode connected in inverse parallel connection with the silicon controlled rectifier is in a short circuit state, when the silicon controlled rectifier of the lower bridge arm is turned off, the diode connected in inverse parallel connection with the silicon controlled rectifier is in a conducting state, and therefore when the logic unit sends a control signal for rectifying or stopping rectifying to the three-phase switching element driving unit, the three-phase switching element driving unit can control the switching state of the corresponding silicon controlled rectifier according to the working condition of the three-phase voltage regulator at the moment so as to control the working state of the. If the logic processing unit sends a rectification control signal to the three-phase switching element driving unit, the three-phase switching element driving unit stops sending a control signal to a control electrode of the corresponding lower bridge arm silicon controlled rectifier, at the moment, the silicon controlled rectifier is turned off, a diode connected with the silicon controlled rectifier in a reverse parallel connection mode is in a state of being capable of being turned on, and the diode and a diode of an upper bridge arm form a rectification loop, so that rectification of the three-phase voltage regulator is achieved; when the logic processing unit sends a rectification stopping control signal to the three-phase switching element driving unit, the three-phase switching element driving unit sends a control signal to a control electrode corresponding to the controlled silicon of the lower bridge arm, at the moment, the controlled silicon is conducted, a diode connected with the controlled silicon in reverse parallel connection is in a short circuit state, and the diode of the upper bridge arm cannot form a rectification loop, so that the rectification stopping of the three-phase voltage regulator is realized.

Drawings

FIG. 1 is a schematic diagram of a BANG-BANG control method;

fig. 2 is a main circuit diagram of a three-phase voltage regulator according to a first embodiment of the present invention;

FIG. 3 is a schematic diagram of a control system of a three-phase voltage regulator of a motorcycle according to an embodiment of the present invention;

fig. 4 is a graph of three-phase ac input and output voltage waveforms of a three-phase voltage regulator according to a first and second embodiment of the present invention;

fig. 5 is a main circuit diagram of a three-phase voltage regulator according to a second embodiment of the present invention;

fig. 6 is a schematic diagram of a control system of a three-phase voltage regulator of a motorcycle according to a second embodiment of the present invention.

Detailed Description

The invention will be further explained with reference to the drawings and the embodiments.

BANG-BANG control is a control method for limiting a controlled amount between a maximum value and a minimum value, as shown in FIG. 1, and the width of an impact pulse is adjusted so that the controlled amount is T_SETAt T_MAXAnd T_MINBetween the two straight lines; when the controlled quantity is at the lower limit T_MINIncreasing the pulse to increase the controlled quantity; when the controlled quantity is at the upper limit T_MAXWhen the pulse is reduced, the controlled quantity is reduced; controlled quantity is at T_MAXAnd T_MINMean change between, which is:

the BANG-BANG control is applied to the control of a three-phase rectification circuit of a motorcycle, the positive half wave of three-phase alternating current is pulse, and the output voltage of a three-phase voltage regulator is controlled quantity; the positive half-wave rectification output of the three-phase voltage regulator can cause the output voltage to rise, and the positive half-wave rectification stop of the three-phase voltage regulator can cause the output voltage to drop.