Power device signal generator

Abstract

The invention relates to a power device signal generator. Belongs to the technical field of electronic testing. The invention aims to solve the problems that the existing test platform is complex in structure and inconvenient to operate and cannot meet the strict signal requirement of a power semiconductor. The device is mainly characterized by comprising a touch screen control unit, a monopulse output unit, a thyristor rectification / voltage regulation trigger signal output unit and a PLC (Programmable Logic Controller) control unit, the touch screen control unit is connected with the monopulse output unit and the thyristor rectification / voltage regulation trigger signal output unit through an RS485 interface and a network cable, and is connected with the PLC control unit through an RS485 interface and a network cable, and the PLC control unit is connected with the thyristor rectification / voltage regulation trigger signal output unit through a terminal wire, so that switching among different acquired voltages is realized, and the switching of the single pulse output unit and the thyristor rectification / voltage regulation trigger signal output unit is realized. The output of six paths of monopulse signals and the output of thyristor rectification / voltage regulation trigger signals are completed. The circuit is mainly used for sending multiple paths of signals with adjustable pulse width and delay time and phase-shifting thyristor rectification and voltage regulation trigger signals.

Description

Technical Field

[0001] This invention belongs to the field of electronic testing technology, specifically relating to a power device signal generator, which is used to send multiple adjustable pulse width and delay time signals, as well as phase-shifting thyristor rectification and voltage regulation trigger signals. Background Technology

[0002] Power device signal generators are key components in power electronic systems, and their application is closely related to the widespread use of power semiconductor devices (such as IGBTs, MOSFETs, SiC, and GaN). Currently, the company's power application products are increasing in number, requiring different drive signals (electrical signals, optical signals, and timing signals). The current platform is relatively complex and inconvenient to use. Furthermore, power semiconductors are now being applied in new energy, electric vehicles, industrial automation, smart grids, and digital energy fields. These fields have demanding application conditions, requiring high-frequency signals, high control precision, dead-time optimization, low jitter, and fast response. Power semiconductor drive signal generators have evolved from simple switch control to the "nerve center" of smart energy systems; therefore, it is necessary to develop a new type of power semiconductor drive signal generator suitable for current new power semiconductor applications. Summary of the Invention

[0003] The purpose of this invention is to provide a power device signal generator that is easy to operate, allows for independent setting of the transmitted signal width and delay time, and enables the driving thyristor phase angle, in order to address the aforementioned shortcomings.

[0004] The technical solution of the present invention is: a power device signal generator, characterized in that: it is composed of a touch screen control unit, a single pulse output unit, a thyristor rectification / voltage regulation trigger signal output unit and a PLC control unit; wherein, the touch screen control unit (1) is connected to the single pulse output unit and the thyristor rectification / voltage regulation trigger signal output unit through an RS485 interface and a network cable to realize the transmission of set parameters, and is connected to the PLC control unit through an RS485 interface and a network cable. The PLC control unit is connected to the thyristor rectification / voltage regulation trigger signal output unit through terminal wiring to realize the switching between different acquisition voltages, and complete the output of six single pulse signals and the output of thyristor rectification / voltage regulation trigger signals.

[0005] The touch screen control unit in the technical solution of the present invention includes a touch screen and a switching power supply. The touch screen is used to realize parameter input and status display, and the switching power supply is used to power the entire generator.

[0006] The single-pulse output unit in the technical solution of the present invention includes an optical fiber input unit, an optical fiber output unit, a TTL output unit, a first 485 chip communication unit, and a first microcontroller.

[0007] In the technical solution of this invention, the single-pulse output unit is a six-channel single-pulse output unit, used to generate and output six channels of rectangular wave signals with adjustable pulse width and delay time; the first microcontroller includes a first STM32 microcontroller; the optical fiber input unit is an optical fiber receiving module; the optical fiber output unit is an optical fiber transmitting module; the TTL output unit is a TTL driver chip module; the first 485 chip communication unit includes a first 485 chip and a first signal isolation module; the first 485 chip is connected to the first signal isolation module through internal PCB traces and to the first STM32 microcontroller through a URAT interface; the first STM32 microcontroller is connected to the optical fiber receiving module through a GPIO interface, and to the optical fiber transmitting module and the TTL driver chip module through a GPIO interface.

[0008] The thyristor rectification / voltage regulation trigger signal output unit in the technical solution of the present invention includes a synchronous signal acquisition unit, a CPLD, a second 485 chip communication unit, a second microcontroller, and a pulse transformer unit, which are used to generate a stable thyristor rectification / voltage regulation trigger pulse train.

[0009] In the technical solution of the present invention, the second microcontroller includes a second STM32 microcontroller; the second 485 chip communication unit includes a second 485 chip and a first signal isolation module; the second STM32 microcontroller is connected to the synchronous signal acquisition unit through the GPIO interface, connected to the CPLD through the GPIO interface, connected to the pulse transformer unit through the terminal wire, and connected to the second 485 chip through the URAT interface; the second signal isolation module (36) is connected to the second 485 chip through the internal traces of the PCB.

[0010] The PLC control unit in the technical solution of this invention includes a PLC and a relay, which is used to switch power resistors with different resistance values ​​to realize the acquisition of different voltages.

[0011] The technical solution of the present invention also includes a power resistor, which includes a 2W, 15KΩ metal film resistor and a 2KΩ metal film resistor; the PLC is connected to a relay through external wiring; the relay is connected to the power resistor through terminal wiring.

[0012] The pulse width adjustment range of the single-pulse output unit in the technical solution of the present invention is 1μs-200s, and the delay time adjustment range is 1μs-200s; the single-pulse output unit supports three output modes: invisible light fiber, visible light fiber, and TTL; the phase shift adjustment range of the thyristor rectification / voltage regulation trigger signal output unit is 0-180°.

[0013] The touch screen control unit, single pulse output unit, thyristor rectification / voltage regulation trigger signal output unit, and PLC control unit described in the technical solution of the present invention adopt a modular design.

[0014] The advantages of this invention are: it supports independent setting of the output signal pulse width (1μs-200s), delay time (1μs-200s), and thyristor phase angle (0-180°), with high parameter adjustment accuracy (pulse width error ≤ ±1μs, phase angle error ≤ ±1°), adaptable to the testing needs of power devices of different models and application scenarios. The six-channel single-pulse output unit has three output modes: invisible light fiber, visible light fiber, and TTL, which can be flexibly selected according to the distance and interference conditions of the testing environment. For example, in the high-voltage testing scenario of new energy vehicles, the fiber optic mode can be used to achieve anti-interference signal transmission. The thyristor rectification / voltage regulation trigger signal output unit adopts a design of "synchronous acquisition + microcontroller logic control + pulse transformer isolation," ensuring stable output pulse train frequency and consistent amplitude (error ≤ ±5%), guaranteeing stable operation of the thyristor during rectification and voltage regulation tests, and avoiding test data deviations caused by trigger signal fluctuations. Easy to operate and maintain: Full parameter visualization settings are achieved through the touch screen, eliminating the need for complex hardware wiring adjustments; each unit adopts a modular design, and when a unit fails, it can be disassembled and replaced individually, reducing maintenance difficulty and cost.

[0015] This invention is mainly used to send multiple adjustable pulse width and delay time signals, as well as phase-shifting thyristor rectification and voltage regulation trigger signals. Attached Figure Description

[0016] Figure 1 This is a block diagram of the power device signal generator structure of the present invention.

[0017] Figure 2 This is a circuit block diagram of the power device signal generator touch screen control unit of the present invention.

[0018] Figure 3 This is a circuit block diagram of the six-channel single-pulse output unit of the power device signal generator of the present invention.

[0019] Figure 4 This is a circuit block diagram of the thyristor rectification / voltage regulation trigger signal output unit of the power device signal generator of the present invention.

[0020] Figure 5 This is a circuit block diagram of the power device signal generator PLC control unit of the present invention.

[0021] Figure 6 This is a circuit diagram of the driven thyristor three-phase rectification mode of the power device signal generator of the present invention.

[0022] Figure 7This is a circuit diagram of the driven thyristor three-phase voltage regulation mode of the power device signal generator of the present invention.

[0023] Figure 8 This is a circuit diagram of the driven thyristor single-phase voltage regulation mode of the power device signal generator of the present invention.

[0024] Figure 9 This is a circuit diagram of the driven thyristor single-phase voltage regulation mode of the power device signal generator of the present invention.

[0025] Figure 10 This is a schematic diagram of the optical fiber transmission module of the power device signal generator of the present invention.

[0026] Figure 11 This is a schematic diagram of the optical fiber receiving module of the power device signal generator of the present invention.

[0027] Figure 12 This is a schematic diagram of the TTL driver chip module of the power device signal generator of the present invention.

[0028] Figure 13 This is a schematic diagram of the synchronous signal acquisition unit of the power device signal generator of the present invention.

[0029] Figure 14 This is a schematic diagram of the pulse transformer unit of the power device signal generator of the present invention.

[0030] In the diagram: 1-Touchscreen control unit; 11-Touchscreen; 12-Switching power supply; 2-Single pulse output unit; 21-First STM32 microcontroller; 22-Fiber optic receiver module; 23-Fiber optic transmitter module; 24-TTL driver chip module; 25-First 485 chip; 26-First signal isolation module; 3-Thyristor rectification / voltage regulation trigger signal output unit; 31-Synchronous signal acquisition unit; 32-CPLD; 33-Second STM32 microcontroller; 34-Pulse transformer unit; 35-Second 485 chip; 36-Second signal isolation module; 4-PLC control unit; 41-PLC; 42-Relay; 43-Power resistor; 5-Driven thyristor circuit. Detailed Implementation

[0031] The embodiments of the present invention will now be described in full with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of the present invention, and not all of them. Any other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] Embodiment 1 of the power device signal generator of the present invention, as follows: Figures 1 to 14 As shown.

[0033] like Figures 1 to 5 Example 1 consists of a touch screen control unit 1, a single pulse output unit 2, a thyristor rectification / voltage regulation trigger signal output unit 3, and a PLC control unit 4. The thyristor rectification / voltage regulation trigger signal output unit 3 is connected to the driven thyristor circuit 5.

[0034] The touchscreen control unit 1 includes a touchscreen 11 and a switching power supply 12. The touchscreen 11 is a Kunlun Tongtai TPC1051ti model touchscreen, used for parameter input and status display. The switching power supply 12 powers the entire generator. The switching power supply 12 is an LRS-100-24V model switching power supply, with its +24V connected to the +24V of the touchscreen 11. The touchscreen 11 is connected to the network port of the PLC control unit 4 via a network cable. The touchscreen 11 communicates with the first STM32 microcontroller 21 and the second STM32 microcontroller 33 using an RS485 interface. As the core of human-machine interaction, the touchscreen 11 supports direct user input of pulse width, delay time, and thyristor phase angle parameters. It interacts with the first 485 chip 25 and the second 485 chip 35 via the RS485 interface, accurately transmitting the set parameters to the first STM32 microcontroller 21 and the second STM32 microcontroller 33.

[0035] The single-pulse output unit 2 employs a six-channel single-pulse output unit to generate and output six adjustable pulse width and delay time rectangular wave signals. The six-channel single-pulse output unit includes a first STM32 microcontroller 21, an optical fiber receiving module 22, an optical fiber transmitting module 23, a TTL driver chip module 24, a first 485 chip 25, and a first signal isolation module 26. Specifically, the first STM32 microcontroller 21 is an STM32H750 model, the first 485 chip 25 is an RSM3485PHT model, and the first signal isolation module 26 is an SP00S12 model. The first 485 chip 25 is connected to the first signal isolation module 26 via internal PCB traces and to the first STM32 microcontroller 21 via a URAT interface; the first STM32 microcontroller 21 is connected to the optical fiber receiving module 22 via a GPIO interface, and to the optical fiber transmitting module 23 and the TTL driver chip module 24 via GPIO interfaces. The fiber optic receiver module 22 is used to receive external triggers to generate six single-pulse outputs based on these triggers. The fiber optic transmitter module 23 is used to transmit the optical signals of the six single-pulse outputs. The TTL driver chip module 24 is used to transmit the TTL signals of the six single-pulse outputs. The first 485 chip 25 and the first signal isolation module 26 mainly communicate and interact with the touch screen control unit 1. The single-pulse output unit 2 has three output modes: invisible light fiber, visible light fiber, and TTL. It can be flexibly switched according to the distance of the test environment (such as fiber optic mode for long-distance testing) and the interference intensity (such as fiber optic anti-interference mode for high-voltage scenarios) to meet the signal transmission requirements of different test scenarios. The adjustable pulse width and delay time design can accurately match the different requirements of different power devices such as IGBT, MOSFET, SiC, and GaN for drive signals.

[0036] The thyristor rectification / voltage regulation trigger signal output unit 3 includes a synchronous signal acquisition unit 31, a CPLD 32, a second STM32 microcontroller 33, a second microcontroller, a pulse transformer unit 34, a second 485 chip 35, and a second signal isolation module 36, used to generate a stable thyristor rectification / voltage regulation trigger pulse train. The second STM32 microcontroller 33 is an STM32H750 model, the CPLD 32 is an EPM570 model, the second 485 chip 35 is an RSM3485PHT model, and the first signal isolation module 36 is an SP00S12 model. The second STM32 microcontroller 33 is connected to the synchronous signal acquisition unit 31 via a GPIO interface, to the CPLD 32 via a GPIO interface, to the pulse transformer unit 34 via a TIM interface, and to the second 485 chip 35 via a URAT interface. The second signal isolation module 36 is connected to the second 485 chip 35 via internal PCB traces. The synchronization signal acquisition unit 31 includes an optocoupler module, which acquires an external sampling voltage to obtain a synchronization signal and sends it to the second STM32 microcontroller 33. The second STM32 microcontroller 33 interacts with the second signal isolation module 36 to complete the output of the thyristor rectification / voltage regulation trigger signal. The second 485 chip 35 and the second signal isolation module 36 mainly communicate and interact with the touch screen unit.

[0037] The first STM32 microcontroller 21 and the second STM32 microcontroller 33 serve as the core control module. After receiving parameter commands transmitted from the touchscreen 11, they generate drive signals that meet the set requirements through internal program logic, directly realizing the autonomous setting of output signal parameters. The first STM32 microcontroller 21 and the second STM32 microcontroller 33 use the STM32H750VBT6 chip, employing a 240 MHz internal clock timer, ensuring a minimum counting period much less than 1µs. Furthermore, the microcontroller has a 16-bit timer with a maximum ARR of 65535. Through internal logic design, the output signal can be stably output for 200 seconds. This allows the output signal pulse width to reach 1μs-200s, the delay time to reach 1μs-200s, and the thyristor phase angle to be 0-180°. The single-pulse output unit 2 employs an optical fiber receiving module 22 and an optical fiber transmitting module 23 to reduce external interference. Combined with a high-precision TTL driver chip module 24, it ensures extremely low distortion during pulse signal generation and transmission, guaranteeing high precision in pulse width and delay time adjustment, with a pulse width error ≤ ±1μs. The synchronous signal acquisition unit 31 accurately captures external reference signals, and with the high-speed processing capability of the second STM32 microcontroller 33, ultimately achieves high-precision phase angle adjustment. The isolation design of the first signal isolation module 26 and the second signal isolation module 36 further avoids signal crosstalk, ensuring a phase angle error ≤ ±1°.

[0038] The PLC control unit 4 includes a PLC 41, a relay 42, and a power resistor 43, used to switch between different resistance values ​​of the power resistor to acquire different voltages. The PLC 41 is an AMX-Smart200 model PLC, connected to the relay 42 via external wiring. The relay 42 is connected to the power resistor 43 via terminal wiring. The power resistor 43 includes a 2W, 15KΩ metal film resistor and a 2KΩ metal film resistor. The 15KΩ metal film resistor is connected to the normally open terminal of the relay, and the 2KΩ metal film resistor is connected to the normally closed terminal of the relay. The PLC 41 interacts with the touchscreen 11 via a network port. The touchscreen 11 sends data, and upon receiving the data, the PLC 41 controls the relay 42 to switch between different resistance values ​​of the power resistor, thereby switching between different acquired voltages.

[0039] The touch screen control unit 1, single pulse output unit 2, thyristor rectification / voltage regulation trigger signal output unit 3, and PLC control unit 4 adopt a modular design. When a certain unit fails, it can be disassembled and replaced individually, reducing maintenance difficulty and cost.

[0040] During use, the required signal pulse width and delay time are set on the touchscreen 11. The relevant control signals are sent via the STM32 microcontroller to each node to drive the fiber optic transmitter head to output optical signals, and then sent to the driver chip to output TTL signals. The on-time of the thyristors requiring phase shifting is set via the touchscreen, and the relevant control signals are sent via the STM32 microcontroller to the pulse transformer unit to output thyristor trigger signals.

[0041] The driven thyristor circuit 5 has four circuit modes: three-phase rectification mode, three-phase voltage regulation mode, single-phase rectification mode, and single-phase voltage regulation mode.

[0042] Three-phase rectification mode of driven thyristors, such as Figure 6 As shown, a three-phase bridge circuit is composed of six thyristors (SCR1, SCR2, SCR3, SCR4, SCR5, and SCR6), divided into two groups: a common-cathode group and a common-anode group. In the common-cathode group, the cathodes of the three thyristors (SCR1, SCR3, and SCR5) are connected together, and their anodes are connected to phases A, B, and C of the three-phase power supply, respectively. In the common-anode group, the anodes of the three thyristors (SCR2, SCR4, and SCR6) are connected together, and their cathodes are connected to phases A, B, and C of the three-phase power supply, respectively. The cathode of SCR4 is connected to phase A, the cathode of SCR6 is connected to phase B, and the cathode of SCR2 is connected to phase C. The gates and cathodes of the six thyristors are connected to the pulse transformer module of the thyristor rectification / voltage regulation trigger signal output unit.

[0043] Single-phase rectification mode of driven thyristor, such as Figure 7As shown, the circuit consists of four thyristors: SCR13, SCR14, SCR15, and SCR16, arranged in the "upper arm" and "lower arm" configurations. The anode of SCR13 is connected to the live power supply wire, and the cathode is connected to one end of the load. The anode of SCR14 is connected to the live power supply wire, and the cathode is connected to the other end of the load. The cathode of SCR15 is connected to the neutral power supply wire, and the anode is connected to one end of the load. The cathode of SCR16 is connected to the neutral power supply wire, and the anode is connected to the other end of the load. The gates and cathodes of the four thyristors are connected to the pulse transformer module of the thyristor rectification / voltage regulation trigger signal output unit.

[0044] Three-phase voltage regulation mode of driven thyristor as follows Figure 8 As shown, it consists of six thyristors: SCR7, SCR8, SCR9, SCR10, SCR11, and SCR12. The anode of SCR7 and the cathode of SCR8 are connected to phase A power, the anode of SCR9 and the cathode of SCR10 are connected to phase B power, and the anode of SCR11 and the cathode of SCR12 are connected to phase C power. The gates and cathodes of the six thyristors are connected to the pulse transformer module of the thyristor rectification / voltage regulation trigger signal output unit.

[0045] Single-phase voltage regulation mode of driven thyristor, such as Figure 9 As shown, it consists of two thyristors, SCR17 and SCR18. The anode of SCR18 and the cathode of SCR17 are connected to the live wire of the AC power supply, while the cathode and anode of SCR18 are connected to the load and then to the neutral wire of the AC power supply. The gate and cathode of the two thyristors are connected to the pulse transformer module of the thyristor rectification / voltage regulation trigger signal output unit.

[0046] Fiber optic transmission module such as Figure 10 As shown, the fiber optic transmission module 23 consists of a first transistor of model SS8050 and a fiber optic transmitter OP1 of model HFBR-1521-1421, as well as its peripheral components. The input end is connected to the first 485 chip 25 or the second 485 chip 35.

[0047] Fiber optic receiver module, such as Figure 11 As shown, the fiber optic receiver module 22 consists of an HFBR-2521-2421 fiber optic receiver IP1 and its peripheral components, and its input end is connected to the first 485 chip 25 or the second 485 chip 35.

[0048] TTL driver chip module such as Figure 12 As shown, the TTL driver chip module 24 consists of an ADUM3223ARZ-RL7 isolated precision half-bridge driver and its peripheral components. Input pins 1 and 2 are connected to the GPIO interface of the first STM32 microcontroller 21, and output pin 15, i.e. the output terminal, is connected to the terminal block.

[0049] Synchronous signal acquisition unit such as Figure 13As shown, the synchronous signal acquisition unit 31 consists of a 6N137 fast optocoupler and its external circuitry. Pins 2 and 3 of the optocoupler are connected to terminals via resistors, and pin 6 of the optocoupler is connected to the GPIO interface of the second STM32 microcontroller 33.

[0050] Pulse transformer unit such as Figure 14 As shown, the pulse transformer unit 34 consists of an MTLP521-1GB(DIP) optocoupler and a KCB2801G-F56 pulse transformer and their external circuitry. Pin 2 of the optocoupler is connected to the terminal, and pin 3 is connected to pin 1 of the pulse transformer via a transistor. Pins 3 and 4 of the pulse transformer are connected to the terminal.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent substitutions, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A power device signal generator, characterized in that: It consists of a touch screen control unit (1), a single pulse output unit (2), a thyristor rectification / voltage regulation trigger signal output unit (3), and a PLC control unit (4). The touch screen control unit (1) is connected to the single pulse output unit (2) and the thyristor rectification / voltage regulation trigger signal output unit (3) via an RS485 interface and a network cable to realize the transmission of setting parameters. It is also connected to the PLC control unit (4) via an RS485 interface and a network cable. The PLC control unit (4) is connected to the thyristor rectification / voltage regulation trigger signal output unit (3) via terminal wiring to realize the switching between different acquisition voltages and complete the output of six single pulse signals and the output of thyristor rectification / voltage regulation trigger signals.

2. A power device signal generator according to claim 1, characterized in that: The touch screen control unit (1) includes a touch screen (11) and a switching power supply (12). The touch screen (11) is used to realize parameter input and status display, and the switching power supply (12) is used to power the entire generator.

3. A power device signal generator according to claim 1 or 2, characterized in that: The single pulse output unit (2) includes an optical fiber input unit, an optical fiber output unit, a TTL output unit, a first 485 chip communication unit, and a first microcontroller.

4. A power device signal generator according to claim 3, characterized in that: The single pulse output unit (2) is a six-channel single pulse output unit, used to generate and output six channels of rectangular wave signals with adjustable pulse width and delay time; the first microcontroller includes a first STM32 microcontroller (21); the optical fiber input unit is an optical fiber receiving module (22); the optical fiber output unit is an optical fiber transmitting module (23); the TTL output unit is a TTL driver chip module (24); the first 485 chip communication unit includes a first 485 chip (25) and a first signal isolation module (26); the first 485 chip (25) is connected to the first signal isolation module (26) through internal PCB traces, and is connected to the first STM32 microcontroller (21) through a URAT interface; the first STM32 microcontroller (21) is connected to the optical fiber receiving module (22) through a GPIO interface, and is connected to the optical fiber transmitting module (23) and the TTL driver chip module (24) through a GPIO interface.

5. A power device signal generator according to any one of claims 1-2 and 4, characterized in that: The thyristor rectification / voltage regulation trigger signal output unit (3) includes a synchronous signal acquisition unit (31), a CPLD (32), a second 485 chip communication unit, a second microcontroller and a pulse transformer unit (34), which are used to generate a stable thyristor rectification / voltage regulation trigger pulse train.

6. A power device signal generator according to claim 5, characterized in that: The second microcontroller includes a second STM32 microcontroller (33); the second 485 chip communication unit includes a second 485 chip (35) and a first signal isolation module (36); the second STM32 microcontroller (33) is connected to the synchronous signal acquisition unit (31) through the GPIO interface, connected to the CPLD (32) through the GPIO interface, connected to the pulse transformer unit (34) through the terminal wire, and connected to the second 485 chip (35) through the URAT interface; the second signal isolation module (36) is connected to the second 485 chip (35) through the internal traces of the PCB.

7. A power device signal generator according to any one of claims 1-2, 4, and 6, characterized in that: The PLC control unit (4) includes a PLC (41) and a relay (42) for switching power resistors with different resistance values ​​to acquire different voltages.

8. A power device signal generator according to claim 7, characterized in that: It also includes a power resistor (43), which includes a 2W, 15KΩ metal film resistor and a 2KΩ metal film resistor; the PLC (41) is connected to the relay (42) through external wiring; the relay (42) is connected to the power resistor (43) through terminal wiring.

9. A power device signal generator according to any one of claims 1-2, 4, 6, and 8, characterized in that: The pulse width adjustment range of the single pulse output unit (2) is 1μs-200s, and the delay time adjustment range is 1μs-200s; the single pulse output unit (2) supports three output modes: invisible light fiber, visible light fiber, and TTL; the phase shift adjustment range of the thyristor rectification / voltage regulation trigger signal output unit (3) is 0-180°.

10. A power device signal generator according to any one of claims 1-2, 4, 6, and 8, characterized in that: The touch screen control unit (1), single pulse output unit (2), thyristor rectification / voltage regulation trigger signal output unit (3) and PLC control unit (4) adopt a modular design.

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