阅读说明：本技术 发动机驱动型发电机调压器及其发电机 (Engine-driven generator voltage regulator and generator thereof ) 是由 朱闯 刘超海 于 2020-04-23 设计创作，主要内容包括：本发明提供的一种发动机驱动型发电机调压器,包括:整流采样电路,用于获取发电机输出电压,对发电机输出电压进行整流、分压处理并输出采样直流信号；比较触发电路,其输入端与整流采样电路的输出端连接,用于对采样直流信号进行处理并产生同步触发信号；可控硅调压电路,其电源端输入励磁信号,其控制输入端与比较触发电路的输出端连接,在同步触发信号的触发下对励磁信号进行调节并输出调压励磁信号值发动机驱动型发电机的励磁电流输入端；启动电路,其检测输入端与可控硅调压电路的正励磁输出端连接,用于控制可控硅调压电路的工作状态,在简化整个调压器电路结构的基础上,能够有效提高整个调压器的过载能力、降低整个电路的发热量。(The invention provides an engine-driven generator voltage regulator, which comprises a rectification sampling circuit, a voltage-dividing circuit and a voltage-dividing circuit, wherein the rectification sampling circuit is used for acquiring the output voltage of a generator, rectifying and dividing the output voltage of the generator and outputting a sampling direct-current signal; the input end of the comparison trigger circuit is connected with the output end of the rectification sampling circuit and is used for processing the sampling direct current signal and generating a synchronous trigger signal; the silicon controlled voltage regulating circuit has a power end inputting an excitation signal, a control input end connected with the output end of the comparison trigger circuit, and is used for regulating the excitation signal and outputting a voltage regulating excitation signal value to the excitation current input end of the engine driven generator under the trigger of the synchronous trigger signal; and the detection input end of the starting circuit is connected with the positive excitation output end of the silicon controlled voltage regulating circuit and is used for controlling the working state of the silicon controlled voltage regulating circuit, so that the overload capacity of the whole voltage regulator can be effectively improved and the heat productivity of the whole circuit can be reduced on the basis of simplifying the circuit structure of the whole voltage regulator.)

1. An engine generator voltage regulator, characterized by: the circuit comprises a rectification sampling circuit, a comparison trigger circuit, a silicon controlled voltage regulating circuit and a starting circuit;

the rectification sampling circuit is used for acquiring the output voltage of the generator, rectifying and dividing the output voltage of the generator and outputting a sampling direct current signal;

the input end of the comparison trigger circuit is connected with the output end of the rectification sampling circuit and is used for processing the sampling direct current signal and generating a synchronous trigger signal;

the power end of the silicon controlled voltage regulating circuit inputs an excitation signal, the control input end of the silicon controlled voltage regulating circuit is connected with the output end of the comparison trigger circuit, and the silicon controlled voltage regulating circuit regulates the excitation signal and outputs a voltage regulating excitation signal value to the excitation current input end of the engine driven generator under the trigger of the synchronous trigger signal;

and the detection input end of the starting circuit is connected with the positive excitation output end of the silicon controlled voltage regulating circuit and is used for controlling the working state of the silicon controlled voltage regulating circuit.

2. The engine generator voltage regulator of claim 1, wherein: the silicon controlled voltage regulating circuit comprises a silicon controlled rectifier S1, a silicon controlled rectifier S2, a diode D10, a diode D9, a diode D6, a resistor R23, a resistor R24, a resistor R25 and a resistor R26;

the anode of the thyristor S1 is connected with the cathode of a diode D10, the anode of a diode D10 is grounded, the anode of a diode D9 is grounded, the cathode of a diode D9 is connected with the anode of a thyristor S2, the cathodes of the thyristors S2 and the thyristor S1 are connected, and the common connection point of the thyristors S2 and the thyristor S1 is used as the positive excitation output end of the thyristor voltage regulating circuit; one end of a resistor 23 is connected to a positive excitation output end of the thyristor voltage regulating circuit, the other end of the resistor R23 is connected with a negative electrode of a diode D6 through a resistor R25, a positive electrode of a diode D6 serves as a control input end of the thyristor voltage regulating circuit, one end of a resistor 24 is connected to the positive excitation output end of the thyristor voltage regulating circuit, the other end of a resistor R24 is connected with a negative electrode of a diode D6 through a resistor R26, a common connection point between a resistor R23 and the resistor R25 is connected with a control electrode of a thyristor S1, a common connection point between a resistor R24 and a resistor R26 is connected with a control electrode of a thyristor S2, a common connection point between a diode D10 and a thyristor S1 serves as a positive excitation input end of the thyristor voltage regulating circuit, and a common connection point between a diode D9 and.

3. The engine generator voltage regulator of claim 1, wherein: the starting circuit comprises a diode D7, a diode D8, a voltage regulator tube Z2, a voltage regulator tube Z3, a capacitor C7, a resistor R27, a resistor R28, a resistor R29, a triode T1 and a triode T2;

the positive pole of the diode D7 is connected to the negative excitation input end of the thyristor voltage regulating circuit, the positive pole of the diode D8 is connected to the positive excitation input end of the thyristor voltage regulating circuit, the negative poles of the diode D7 and the diode D8 are connected with the collector of the triode T1, the collector of the triode T1 is connected with the base of the triode T1 through the resistor R29, the emitter of the triode T1 is connected to the positive excitation output end of the thyristor voltage regulating circuit, the base of the triode T1 is connected with the collector of the triode T2, the emitter of the triode T2 is grounded, the base of the triode T2 is connected with the positive pole of the voltage regulator tube Z2 through the resistor R28, the negative pole of the voltage regulator tube Z2 is connected with one end of the resistor R7, the other end of the resistor R27 serves as the detection input end of the starting circuit, the positive pole of the voltage regulator tube Z2 is grounded through the capacitor C7, the negative pole of the voltage regulator tube.

4. The engine generator voltage regulator of claim 1, wherein: the comparison trigger circuit comprises a comparison adjusting circuit and a synchronous trigger circuit;

the input end of the comparison regulating circuit is connected with the output end of the rectification sampling circuit and is used for carrying out proportion regulation processing on the sampling direct current signal and outputting a regulating signal to the synchronous trigger circuit;

and the input end of the synchronous trigger circuit is connected with the output end of the comparison regulating circuit and is used for generating a synchronous trigger signal for controlling the silicon controlled voltage regulating circuit according to the regulating signal.

5. The engine generator voltage regulator of claim 4, wherein: the synchronous trigger circuit comprises an operational amplifier U2, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a capacitor C6, a triode T3 and a triode T4;

one end of a resistor R15 is connected with a power supply VCC, the other end of the resistor R15 is connected with the positive output end of the thyristor voltage regulating circuit through a resistor R16, the common connection point of the resistor R15 and the resistor R16 is connected with the inverting end of the operational amplifier U2, the in-phase end of the operational amplifier U2 is connected with the output end of the comparison regulating circuit, the in-phase end of the operational amplifier U2 is connected with the output end of the operational amplifier U2 through a resistor R17, the output end of the operational amplifier U2 is connected with one end of a capacitor C6 through a resistor R18, the other end of the capacitor C6 is connected with the base of a triode T3, the common connection point of the capacitor C6 and the resistor R24 is connected with the positive output end of the thyristor voltage regulating circuit through a resistor R19, the base of a triode T3 is connected with the positive output end of the thyristor voltage regulating circuit through a resistor R20, the emitters of a triode T3 and a triode T4 are both connected with the positive output end of the, the collector of the triode T4 is connected with the power supply VCC through the resistor R22, the collector of the triode T3 is connected with the base of the triode T4, and the base of the triode T4 is used as the output end of the synchronous trigger circuit.

6. The engine generator voltage regulator of claim 4, wherein: the comparison and regulation circuit comprises an operational amplifier U1, a resistor R9, a resistor R10, a resistor R8, a resistor R11, a resistor R12, a resistor R13 and a resistor R14;

one end of the resistor R10 is connected to a power supply VCC, the other end of the resistor R10 is connected with the positive output end of the thyristor voltage regulating circuit through the resistor R9, a common connection point between the resistor R10 and the resistor R9 is connected with the inverting end of the operational amplifier U1 through the resistor R8, the inverting end of the operational amplifier U1 is connected with the output end of the rectification sampling circuit, the inverting end of the operational amplifier U1 is connected with the output end of the operational amplifier U1 through the capacitor C4, the inverting end of the operational amplifier U1 is connected with the output end of the operational amplifier U1 after being connected in series through the capacitor C5 and the resistor R12, the output end of the operational amplifier U1 is connected with the positive output end of the thyristor voltage regulating circuit through the resistor R13, the output end of the operational amplifier U1 is connected with one end of the resistor R14, and the other.

7. The engine generator voltage regulator of claim 1, wherein: the rectification sampling circuit comprises a rectification circuit and a voltage division sampling circuit;

the input end of the rectifying circuit is connected with the output end of the generator and is used for rectifying alternating current output by the generator and outputting a direct current value voltage division sampling circuit;

and the input end of the voltage division sampling circuit is connected with the output end of the rectifying circuit and is used for carrying out voltage division sampling on the direct current output by the rectifying circuit to form a sampling direct current signal and outputting the sampling direct current signal to the proportional trigger circuit.

8. The engine generator voltage regulator of claim 4, wherein: also includes a power supply circuit; and the input end of the power supply circuit is connected with the output end of the rectifying circuit and is used for performing voltage stabilization treatment on the direct current output by the rectifying circuit and outputting a power supply VCC.

9. An engine generator characterized in that: the generator has an engine generator voltage regulator as claimed in any one of claims 1 to 8.

Technical Field

The invention relates to the field of generators, in particular to a voltage regulator of an engine-driven generator and a generator thereof.

Background

In the generator driven by the engine, especially the generator driven by the general engine and providing the temporary electricity for the household, small business and the like, a voltage regulator is arranged, the voltage regulator is used for regulating the output of the generator and ensuring the output voltage of the generator to be stable, and the prior voltage regulator has the following technical defects: the circuit structure of the voltage regulator of the existing generator is complex, and more importantly: the voltage regulating circuit of the existing voltage regulator is realized by adopting a high-power triode and a field effect transistor, the overload capacity is low, the heat generation amount is high, the electric burning of a user is easily caused, and the voltage regulating circuit is provided with a high-power filter capacitor, the withstand voltage of the capacitor is limited, the failure of the voltage regulator is easily caused, and the stability is poor.

Therefore, in order to solve the above technical problems, it is necessary to provide a new technical means.

Disclosure of Invention

In view of the above, the present invention provides an engine generator voltage regulator and a generator thereof to solve the above technical problems.

The invention provides an engine-driven generator voltage regulator, which comprises a rectification sampling circuit, a comparison trigger circuit, a silicon controlled voltage regulating circuit and a starting circuit, wherein the rectification sampling circuit is connected with the comparison trigger circuit;

the rectification sampling circuit is used for acquiring the output voltage of the generator, rectifying and dividing the output voltage of the generator and outputting a sampling direct current signal;

the input end of the comparison trigger circuit is connected with the output end of the rectification sampling circuit and is used for processing the sampling direct current signal and generating a synchronous trigger signal;

the power end of the silicon controlled voltage regulating circuit inputs an excitation signal, the control input end of the silicon controlled voltage regulating circuit is connected with the output end of the comparison trigger circuit, and the silicon controlled voltage regulating circuit regulates the excitation signal and outputs a voltage regulating excitation signal value to the excitation current input end of the engine driven generator under the trigger of the synchronous trigger signal;

the starting circuit, it detects that the input is connected with silicon controlled rectifier voltage regulating circuit's positive excitation output for control silicon controlled rectifier voltage regulating circuit's operating condition, through above-mentioned structure, on the basis of simplifying whole voltage regulator circuit structure, can effectively improve the overload capacity of whole voltage regulator, reduce the calorific capacity of whole circuit, thereby can effectively improve stability, the reliability of whole voltage regulator, ensure the safety of user's power consumption, and can greatly reduced manufacturing cost.

Further, the thyristor voltage regulating circuit comprises a thyristor S1, a thyristor S2, a diode D10, a diode D9, a diode D6, a resistor R23, a resistor R24, a resistor R25 and a resistor R26;

the anode of the thyristor S1 is connected with the cathode of a diode D10, the anode of a diode D10 is grounded, the anode of a diode D9 is grounded, the cathode of a diode D9 is connected with the anode of a thyristor S2, the cathodes of the thyristors S2 and the thyristor S1 are connected, and the common connection point of the thyristors S2 and the thyristor S1 is used as the positive excitation output end of the thyristor voltage regulating circuit; one end of a resistor 23 is connected with a positive excitation output end of the thyristor voltage regulating circuit, the other end of a resistor R23 is connected with the negative electrode of a diode D6 through a resistor R25, the positive electrode of the diode D6 is used as a control input end of the thyristor voltage regulating circuit, one end of a resistor 24 is connected with the positive excitation output end of the thyristor voltage regulating circuit, the other end of a resistor R24 is connected with the negative electrode of a diode D6 through a resistor R26, a common connection point between a resistor R23 and a resistor R25 is connected with a control electrode of a thyristor S1, a common connection point between a resistor R24 and a resistor R26 is connected with a control electrode of a thyristor S2, a common connection point between a diode D10 and a thyristor S1 is used as a positive excitation input end of the thyristor voltage regulating circuit, a common connection point between a diode D9 and a thyristor S2 is used as a negative excitation input end of the thyristor voltage regulating circuit, The controllable silicon S2 forms an adjustable bridge rectifier circuit, the output of the generator is stabilized by adjusting the size of the exciting current input to the excitation input end of the generator by outputting the same trigger control signal to the controllable silicon S1 and the controllable silicon S2, and compared with a high-power triode and a field effect transistor, the adjustable bridge rectifier circuit has the advantages of higher response speed, low emission and no on-off inrush current, so that the output exciting current is more stable and reliable.

Further, the starting circuit comprises a diode D7, a diode D8, a voltage regulator tube Z2, a voltage regulator tube Z3, a capacitor C7, a resistor R27, a resistor R28, a resistor R29, a triode T1 and a triode T2;

the positive pole of the diode D7 is connected with the negative excitation input end of the silicon controlled voltage regulating circuit, the positive pole of the diode D8 is connected with the positive excitation input end of the silicon controlled voltage regulating circuit, the negative poles of the diode D7 and the diode D8 are connected with the collector of the triode T1, the collector of the triode T1 is connected with the base of the triode T1 through the resistor R29, the emitter of the triode T1 is connected with the positive excitation output end of the silicon controlled voltage regulating circuit, the base of the triode T1 is connected with the collector of the triode T2, the emitter of the triode T2 is grounded, the base of the triode T2 is connected with the positive pole of the voltage stabilizing tube Z2 through the resistor R28, the negative pole of the voltage stabilizing tube Z2 is connected with one end of the resistor R7, the other end of the resistor R27 is used as the detection input end of the starting circuit, the positive pole of the voltage stabilizing tube Z2 is grounded through the capacitor C7, the negative pole of, through the structure, the silicon controlled voltage regulating circuit is more stable and reliable, stable startup of the generator is ensured, when the generator is just started, the voltage regulating circuit does not work, at the moment, the base electrode of the triode T2 is cut off under the action of the voltage regulator tube Z2, namely, the voltage sampled by the resistor R27 is not enough to enable the voltage regulator tube Z2 to be conducted, therefore, the triode T1 is conducted, exciting current supplies power to the exciting coil through the triode T1, the terminal voltage of the exciting coil is gradually increased, when the voltage is increased to a set voltage threshold value, the Z2 is conducted, the triode T2 is conducted, the triode T1 is cut off, the voltage regulating circuit enters a working state, other detection control circuits and independent power circuits are not needed under the action of the circuits, and the whole circuit structure is more simplified and stable.

Further, the comparison trigger circuit comprises a comparison adjusting circuit and a synchronous trigger circuit;

the input end of the comparison regulating circuit is connected with the output end of the rectification sampling circuit and is used for carrying out proportion regulation processing on the sampling direct current signal and outputting a regulating signal to the synchronous trigger circuit;

the input end of the synchronous trigger circuit is connected with the output end of the comparison regulating circuit and used for generating a synchronous trigger signal for controlling the silicon controlled voltage regulating circuit according to the regulating signal.

Further, the synchronous trigger circuit comprises an operational amplifier U2, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a capacitor C6, a triode T3 and a triode T4;

one end of a resistor R15 is connected with a power supply VCC, the other end of the resistor R15 is connected with the positive output end of the thyristor voltage regulating circuit through a resistor R16, the common connection point of the resistor R15 and the resistor R16 is connected with the inverting end of the operational amplifier U2, the in-phase end of the operational amplifier U2 is connected with the output end of the comparison regulating circuit, the in-phase end of the operational amplifier U2 is connected with the output end of the operational amplifier U2 through a resistor R17, the output end of the operational amplifier U2 is connected with one end of a capacitor C6 through a resistor R18, the other end of the capacitor C6 is connected with the base of a triode T3, the common connection point of the capacitor C6 and the resistor R24 is connected with the positive output end of the thyristor voltage regulating circuit through a resistor R19, the base of a triode T3 is connected with the positive output end of the thyristor voltage regulating circuit through a resistor R20, the emitters of a triode T3 and a triode T4 are both connected with the positive output end of the, the collector of the triode T4 is connected with a power supply VCC through a resistor R22, the collector of the triode T3 is connected with the base of the triode T4, the base of the triode T4 is used as the output end of the synchronous trigger circuit, through the structure, a pulse signal is output under the action of the operational amplifier U2, the duty ratio of the pulse signal is adjusted through the value of a capacitor C6, therefore, the duty ratio of the synchronous trigger signal is adjusted, the triode T3 and the triode T4 form an inverter circuit, and therefore the stable operation of the voltage regulating circuit is ensured.

Further, the comparison and adjustment circuit comprises an operational amplifier U1, a resistor R9, a resistor R10, a resistor R8, a resistor R11, a resistor R12, a resistor R13 and a resistor R14;

one end of the resistor R10 is connected with a power supply VCC, the other end is connected with the positive output end of the silicon controlled voltage regulating circuit through a resistor R9, the common connection point between the resistor R10 and the resistor R9 is connected with the inverting end of the operational amplifier U1 through a resistor R8, the in-phase end of the operational amplifier U1 is connected with the output end of the rectification sampling circuit, the inverting end of the operational amplifier U1 is connected with the output end of the operational amplifier U1 through a capacitor C4, the inverting end of the operational amplifier U1 is connected with the output end of the operational amplifier U1 through a capacitor C5 and a resistor R12 in series, the output end of the operational amplifier U1 is connected with the positive output end of the silicon controlled voltage regulating circuit through a resistor R13, the output end of the operational amplifier U1 is connected with one end of the resistor R14, the other end of the resistor R14 is used as the output end of the comparison regulating circuit, because the output voltage signal of the rectification sampling circuit flashes, if the direct current signal is directly output to the synchronous trigger, therefore, the circuit outputs a stable signal to the synchronous trigger circuit by the cooperation of the capacitor C4 and the capacitor C5.

Further, the rectification sampling circuit comprises a rectification circuit and a voltage division sampling circuit;

the input end of the rectifying circuit is connected with the output end of the generator and is used for rectifying alternating current output by the generator and outputting a direct current value voltage division sampling circuit;

the input end of the voltage division sampling circuit is connected with the output end of the rectifying circuit and is used for carrying out voltage division sampling on direct current output by the rectifying circuit to form a sampling direct current signal and outputting the sampling direct current signal to the proportional trigger circuit, the rectifying circuit forms a full-bridge type rectifying circuit by diodes D1, D2, D3 and D4, a resistor R1, a resistor R2, a resistor R3, a resistor R4, an adjustable resistor R5, a resistor R6 and a resistor R7 to form the voltage division sampling circuit, the specific circuit is shown in the figure, therefore, the stability of the sampling signal is ensured, and the impact on subsequent circuits is prevented, wherein the voltage of the generator is higher due to the fact that the output voltage of the generator is 110V or 220V and other alternating current, and therefore, a sampling transformer needs to be arranged between the.

Further, the power supply circuit is also included; the input end of the power circuit is connected with the output end of the rectifying circuit and is used for performing voltage stabilization treatment on the direct current output by the rectifying circuit and outputting a power supply VCC, so that the structure does not need to rearrange a power supply and reduces the production cost, wherein the power circuit consists of a diode D5, a capacitor C2, a resistor R11, a voltage stabilizing tube Z1 and a capacitor C3, as shown in figure 3, the amplitude of the power supply VCC output by the power circuit can be set through the voltage stabilizing tube and a resistor R11, such as 5V, 9V and the like.

Accordingly, the present invention also provides an engine generator having an engine generator voltage regulator as described above.

The invention has the beneficial effects that: on the basis of simplifying the circuit structure of the whole voltage regulator, the overload capacity of the whole voltage regulator can be effectively improved, and the heat productivity of the whole circuit is reduced, so that the stability and the reliability of the whole voltage regulator can be effectively improved, the safety of power consumption of a user is ensured, and the production cost can be greatly reduced.

Drawings

The invention is further described below with reference to the following figures and examples:

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Fig. 3 is a schematic diagram of the inventive circuit.

Fig. 4 is a signal waveform diagram of the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings of the specification:

the invention provides an engine-driven generator voltage regulator, which comprises a rectification sampling circuit, a comparison trigger circuit, a silicon controlled voltage regulating circuit and a starting circuit, wherein the rectification sampling circuit is connected with the comparison trigger circuit;

the rectification sampling circuit is used for acquiring the output voltage of the generator, rectifying and dividing the output voltage of the generator and outputting a sampling direct current signal;

the input end of the comparison trigger circuit is connected with the output end of the rectification sampling circuit and is used for processing the sampling direct current signal and generating a synchronous trigger signal;

the power end of the silicon controlled voltage regulating circuit inputs an excitation signal, the control input end of the silicon controlled voltage regulating circuit is connected with the output end of the comparison trigger circuit, and the silicon controlled voltage regulating circuit regulates the excitation signal and outputs a voltage regulating excitation signal value to the excitation current input end of the engine driven generator under the trigger of the synchronous trigger signal;

the starting circuit, it detects that the input is connected with silicon controlled rectifier voltage regulating circuit's positive excitation output for control silicon controlled rectifier voltage regulating circuit's operating condition, through above-mentioned structure, on the basis of simplifying whole voltage regulator circuit structure, can effectively improve the overload capacity of whole voltage regulator, reduce the calorific capacity of whole circuit, thereby can effectively improve stability, the reliability of whole voltage regulator, ensure the safety of user's power consumption, and can greatly reduced manufacturing cost.

In this embodiment, the thyristor voltage regulating circuit includes a thyristor S1, a thyristor S2, a diode D10, a diode D9, a diode D6, a resistor R23, a resistor R24, a resistor R25, and a resistor R26;

the anode of the thyristor S1 is connected with the cathode of a diode D10, the anode of a diode D10 is grounded, the anode of a diode D9 is grounded, the cathode of a diode D9 is connected with the anode of a thyristor S2, the cathodes of the thyristors S2 and the thyristor S1 are connected, and the common connection point of the thyristors S2 and the thyristor S1 is used as the positive excitation output end of the thyristor voltage regulating circuit; one end of a resistor 23 is connected with a positive excitation output end of the thyristor voltage regulating circuit, the other end of a resistor R23 is connected with the negative electrode of a diode D6 through a resistor R25, the positive electrode of the diode D6 is used as a control input end of the thyristor voltage regulating circuit, one end of a resistor 24 is connected with the positive excitation output end of the thyristor voltage regulating circuit, the other end of a resistor R24 is connected with the negative electrode of a diode D6 through a resistor R26, a common connection point between a resistor R23 and a resistor R25 is connected with a control electrode of a thyristor S1, a common connection point between a resistor R24 and a resistor R26 is connected with a control electrode of a thyristor S2, a common connection point between a diode D10 and a thyristor S1 is used as a positive excitation input end of the thyristor voltage regulating circuit, a common connection point between a diode D9 and a thyristor S2 is used as a negative excitation input end of the thyristor voltage regulating circuit, The controllable silicon S2 forms an adjustable bridge rectifier circuit, the output of the generator is stabilized by adjusting the size of the exciting current input to the excitation input end of the generator by outputting the same trigger control signal to the controllable silicon S1 and the controllable silicon S2, and compared with a high-power triode and a field effect transistor, the adjustable bridge rectifier circuit has the advantages of higher response speed, low emission and no on-off inrush current, so that the output exciting current is more stable and reliable.

In this embodiment, the start circuit includes a diode D7, a diode D8, a voltage regulator tube Z2, a voltage regulator tube Z3, a capacitor C7, a resistor R27, a resistor R28, a resistor R29, a transistor T1, and a transistor T2;

the positive pole of the diode D7 is connected with the negative excitation input end of the silicon controlled voltage regulating circuit, the positive pole of the diode D8 is connected with the positive excitation input end of the silicon controlled voltage regulating circuit, the negative poles of the diode D7 and the diode D8 are connected with the collector of the triode T1, the collector of the triode T1 is connected with the base of the triode T1 through the resistor R29, the emitter of the triode T1 is connected with the positive excitation output end of the silicon controlled voltage regulating circuit, the base of the triode T1 is connected with the collector of the triode T2, the emitter of the triode T2 is grounded, the base of the triode T2 is connected with the positive pole of the voltage stabilizing tube Z2 through the resistor R28, the negative pole of the voltage stabilizing tube Z2 is connected with one end of the resistor R7, the other end of the resistor R27 is used as the detection input end of the starting circuit, the positive pole of the voltage stabilizing tube Z2 is grounded through the capacitor C7, the negative pole of, through the structure, the silicon controlled voltage regulating circuit is more stable and reliable, stable startup of the generator is ensured, when the generator is just started, the voltage regulating circuit does not work, at the moment, the base electrode of the triode T2 is cut off under the action of the voltage regulator tube Z2, namely, the voltage sampled by the resistor R27 is not enough to enable the voltage regulator tube Z2 to be conducted, therefore, the triode T1 is conducted, exciting current supplies power to the exciting coil through the triode T1, the terminal voltage of the exciting coil is gradually increased, when the voltage is increased to a set voltage threshold value, the Z2 is conducted, the triode T2 is conducted, the triode T1 is cut off, the voltage regulating circuit enters a working state, other detection control circuits and independent power circuits are not needed under the action of the circuits, and the whole circuit structure is more simplified and stable.

In this embodiment, the comparison trigger circuit includes a comparison adjusting circuit and a synchronous trigger circuit;

the input end of the comparison regulating circuit is connected with the output end of the rectification sampling circuit and is used for carrying out proportion regulation processing on the sampling direct current signal and outputting a regulating signal to the synchronous trigger circuit;

the input end of the synchronous trigger circuit is connected with the output end of the comparison regulating circuit and used for generating a synchronous trigger signal for controlling the silicon controlled voltage regulating circuit according to the regulating signal.

In this embodiment, the synchronous trigger circuit includes an operational amplifier U2, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a capacitor C6, a transistor T3, and a transistor T4;

one end of a resistor R15 is connected with a power supply VCC, the other end of the resistor R15 is connected with the positive output end of the thyristor voltage regulating circuit through a resistor R16, the common connection point of the resistor R15 and the resistor R16 is connected with the inverting end of the operational amplifier U2, the in-phase end of the operational amplifier U2 is connected with the output end of the comparison regulating circuit, the in-phase end of the operational amplifier U2 is connected with the output end of the operational amplifier U2 through a resistor R17, the output end of the operational amplifier U2 is connected with one end of a capacitor C6 through a resistor R18, the other end of the capacitor C6 is connected with the base of a triode T3, the common connection point of the capacitor C6 and the resistor R24 is connected with the positive output end of the thyristor voltage regulating circuit through a resistor R19, the base of a triode T3 is connected with the positive output end of the thyristor voltage regulating circuit through a resistor R20, the emitters of a triode T3 and a triode T4 are both connected with the positive output end of the, the collector of the triode T4 is connected with a power supply VCC through a resistor R22, the collector of the triode T3 is connected with the base of the triode T4, the base of the triode T4 is used as the output end of the synchronous trigger circuit, through the structure, a pulse signal is output under the action of the operational amplifier U2, the duty ratio of the pulse signal is adjusted through the value of a capacitor C6, therefore, the duty ratio of the synchronous trigger signal is adjusted, the triode T3 and the triode T4 form an inverter circuit, and therefore the stable operation of the voltage regulating circuit is ensured.

In this embodiment, the comparison and adjustment circuit includes an operational amplifier U1, a resistor R9, a resistor R10, a resistor R8, a resistor R11, a resistor R12, a resistor R13, and a resistor R14;

one end of the resistor R10 is connected with a power supply VCC, the other end is connected with the positive output end of the silicon controlled voltage regulating circuit through a resistor R9, the common connection point between the resistor R10 and the resistor R9 is connected with the inverting end of the operational amplifier U1 through a resistor R8, the in-phase end of the operational amplifier U1 is connected with the output end of the rectification sampling circuit, the inverting end of the operational amplifier U1 is connected with the output end of the operational amplifier U1 through a capacitor C4, the inverting end of the operational amplifier U1 is connected with the output end of the operational amplifier U1 through a capacitor C5 and a resistor R12 in series, the output end of the operational amplifier U1 is connected with the positive output end of the silicon controlled voltage regulating circuit through a resistor R13, the output end of the operational amplifier U1 is connected with one end of the resistor R14, the other end of the resistor R14 is used as the output end of the comparison regulating circuit, because the output voltage signal of the rectification sampling circuit flashes, if the direct current signal is directly output to the synchronous trigger, therefore, the circuit outputs a stable signal to the synchronous trigger circuit by the cooperation of the capacitor C4 and the capacitor C5.

In addition, in the structure, the grounding ends of the rectification sampling circuit and the comparison trigger circuit are connected to the output end of the silicon controlled voltage regulating circuit, and under the structure, the trigger control capability of the trigger signal to the silicon controlled can be effectively improved, and the traditional method that an additional boost regulating circuit is needed to boost and regulate the trigger signal is not needed, so that the circuit structure can be effectively simplified.

In this embodiment, the rectification sampling circuit includes a rectification circuit and a voltage division sampling circuit;

the input end of the rectifying circuit is connected with the output end of the generator and is used for rectifying alternating current output by the generator and outputting a direct current value voltage division sampling circuit;

the input end of the voltage division sampling circuit is connected with the output end of the rectifying circuit and is used for carrying out voltage division sampling on direct current output by the rectifying circuit to form a sampling direct current signal and outputting the sampling direct current signal to the proportional trigger circuit, the rectifying circuit forms a full-bridge type rectifying circuit by diodes D1, D2, D3 and D4, a resistor R1, a resistor R2, a resistor R3, a resistor R4, an adjustable resistor R5, a resistor R6 and a resistor R7 to form the voltage division sampling circuit, the specific circuit is shown in the figure, therefore, the stability of the sampling signal is ensured, and the impact on subsequent circuits is prevented, wherein the voltage of the generator is higher due to the fact that the output voltage of the generator is 110V or 220V and other alternating current, and therefore, a sampling transformer needs to be arranged between the.

In this embodiment, the power supply further includes a power supply circuit; the input end of the power circuit is connected with the output end of the rectifying circuit and is used for performing voltage stabilization treatment on the direct current output by the rectifying circuit and outputting a power supply VCC, so that the structure does not need to rearrange a power supply and reduces the production cost, wherein the power circuit consists of a diode D5, a capacitor C2, a resistor R11, a voltage stabilizing tube Z1 and a capacitor C3, as shown in figure 3, the amplitude of the power supply VCC output by the power circuit can be set through the voltage stabilizing tube and a resistor R11, such as 5V, 9V and the like.

Accordingly, the present invention also provides an engine generator having an engine generator voltage regulator as described above.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.