WO2021249404A1 - Wind power test platform converter control system - Google Patents

Wind power test platform converter control system Download PDF

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Publication number
WO2021249404A1
WO2021249404A1 PCT/CN2021/098995 CN2021098995W WO2021249404A1 WO 2021249404 A1 WO2021249404 A1 WO 2021249404A1 CN 2021098995 W CN2021098995 W CN 2021098995W WO 2021249404 A1 WO2021249404 A1 WO 2021249404A1
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WIPO (PCT)
Prior art keywords
dsp controller
circuit
voltage
wind power
test platform
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PCT/CN2021/098995
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French (fr)
Chinese (zh)
Inventor
焦冲
刘鑫
郭辰
王绍民
张立英
蔡安民
贾蓉
李家川
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Huaneng Clean Energy Research Institute
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Huaneng Clean Energy Research Institute
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Publication of WO2021249404A1 publication Critical patent/WO2021249404A1/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/346—Testing of armature or field windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/539—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
    • H02M7/5395—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/28—Wind energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Definitions

  • the invention belongs to the field of wind power generation, and relates to a wind power test platform converter control system.
  • a set of 18KW doubly-fed wind turbine experimental platform was designed in a laboratory environment.
  • the platform simulates the operating characteristics of the actual wind farm environment, and can set the range of wind speed changes arbitrarily, and conduct related experimental research on wind turbines.
  • the PLC controller of Siemens is used to control the servo motor to simulate the output characteristics of the wind turbine, and then the low-speed shaft rotation of the wind turbine is driven by the transmission chain to simulate the actual situation of the wind turbine.
  • the purpose of the present invention is to overcome the above shortcomings of the prior art and provide a wind power test platform converter control system, which can enable the wind power test platform converter to complete the test work according to the program.
  • the wind power test platform converter control system of the present invention includes a processor, a first signal conditioning circuit, a second signal conditioning circuit, an AC voltage and current sampling circuit, a first DSP controller, and a second DSP controller.
  • the output of the first detection system is connected to the input of the first DSP controller via the first signal conditioning circuit
  • the output of the second detection system is connected to the input of the second DSP controller via the second signal conditioning circuit
  • the output terminal of the AC voltage and current sampling circuit is connected to the input terminal of the second DSP controller through the third signal conditioning circuit
  • the output terminal of the first DSP controller is driven and protected by the rotor-side IPM through the first level conversion isolation output circuit
  • the control end of the circuit is connected, the output end of the second DSP controller is connected to the control end of the network-side IPM drive and protection circuit through the second level conversion isolation output circuit, and the first DSP controller is connected to the second DSP controller.
  • the processor is connected with the first DSP controller and the second DSP controller.
  • the switch input terminal is connected to the first DSP controller via the switch input isolation circuit.
  • the switch output terminal is connected with the first DSP controller, and the second switch output terminal is connected with the second DSP controller.
  • the first DSP controller and the second DSP controller are connected through a CAN bus.
  • the processor is connected with the first DSP controller and the second DSP controller through the CAN bus.
  • the models of the first DSP controller and the second DSP controller are both TMS320F2812.
  • It also includes a crystal oscillator circuit for providing clock signals for the first DSP controller and the second DSP controller, and a reset circuit for resetting the first DSP controller and the second DSP controller.
  • It also includes a JTAG interface for connecting the first DSP controller and the second DSP controller to an external emulator, and a temperature brake signal circuit for detecting the alarm signal of the inverter, where the temperature brake signal circuit is connected to the switch input terminal .
  • the power devices in the first level conversion isolation output circuit and the second level conversion isolation output circuit are IGBT modules, the model of the IGBT module is FP75R12KE3, the temperature output terminal of the IGBT module in the first level conversion isolation output circuit It is connected with the first DSP controller; the temperature output end of the IGBT module in the second level conversion isolation output circuit is connected with the second DSP controller.
  • It also includes an over-current protection circuit for over-current protection of the IGBT module, and a DC voltage over-voltage protection circuit is arranged on the DC bus of the inverter.
  • the first DSP controller collects grid voltage, stator voltage, rotor current and rotor speed information through the first detection system, and according to the collected grid voltage, stator The voltage, rotor current and rotor speed information generate the rotor-side PWM inverter pulse signal, which is then input into the rotor-side IPM drive and protection circuit after level conversion and signal isolation processing through the first level conversion isolation output circuit;
  • the DSP controller collects the AC side voltage and current information of the grid-side PWM converter through the second detection system, and then generates the grid-side PWM inverter pulse signal according to the collected AC-side voltage and current information of the grid-side PWM converter, and then conducts electricity After level conversion processing and signal isolation processing, it is input to the grid-side IPM drive and protection circuit, which then enables the wind power test platform converter to complete the test work in accordance with the procedure, which is convenient and simple to operate and extremely practical.
  • Figure 1 is a schematic diagram of the structure of the wind power test platform
  • Figure 2 is a schematic diagram of the structure of the present invention.
  • 1 is the first detection system
  • 2 is the first signal conditioning circuit
  • 3 is the first DSP controller
  • 4 is the switch input terminal
  • 5 is the switch input isolation circuit
  • 6 is the second DSP controller
  • 7 is the The second detection system
  • 8 is the second signal conditioning circuit
  • 9 is the AC voltage and current sampling circuit
  • 10 is the third signal conditioning circuit
  • 11 is the first level conversion isolation output circuit
  • 12 is the rotor side IPM drive and protection circuit
  • 13 is the first switch output terminal
  • 14 is the second level conversion isolation output circuit
  • 15 is the network side IPM drive and protection circuit
  • 16 is the second switch output terminal.
  • the wind power test platform converter control system of the present invention includes a processor, a first signal conditioning circuit 2, a second signal conditioning circuit 8, an AC voltage and current sampling circuit 9, a first DSP controller 3, and a second signal conditioning circuit.
  • the output terminal of the first detection system 1 is connected to the input terminal of the first DSP controller 3 via the first signal conditioning circuit 2
  • the output terminal of the second detection system 7 is connected via the second signal conditioning circuit 8 Connected to the input end of the second DSP controller 6, the output end of the AC voltage and current sampling circuit 9 is connected to the
  • the present invention also includes a digital input terminal 4, a first digital output terminal 13, a second digital output terminal 16 and a digital input isolation circuit 5, wherein the digital input 4 is connected to the first digital input isolation circuit 5 via the digital input isolation circuit 5.
  • the DSP controller 3 is connected, the first switch output terminal 13 is connected to the first DSP controller 3, the second switch output terminal 16 is connected to the second DSP controller 6; the first DSP controller 3 is connected to the second DSP controller 6
  • the DSP controllers 6 are connected through the CAN bus; the processor is connected with the first DSP controller 3 and the second DSP controller 6 through the CAN bus, and the start, stop, and monitoring of the frequency converter are controlled by the processor.
  • the models of the first DSP controller 3 and the second DSP controller 6 are both TMS320F2812.
  • the present invention also includes a power management chip TPS73HD301 for supplying power to the first DSP controller 3 and the second DSP controller 6.
  • the TPS73HD301 can not only provide power to the first DSP controller 3 and the second DSP controller 6, but also Provide the power-on reset signal of the first DSP controller 3 and the second DSP controller 6, that is, when the TPS73HD301 is powered on, it will automatically generate a low-level reset pulse of 200ms, which can reliably provide the first DSP controller 3 and the first DSP controller 3 and The second DSP controller 6 performs a reset.
  • the present invention also includes a crystal oscillator circuit for providing clock signals for the first DSP controller 3 and the second DSP controller 6, and a reset circuit for resetting the first DSP controller 3 and the second DSP controller 6.
  • the electric reset mainly completes the configuration of the initial state of all important state machines inside the DSP controller. Only after the correct power-on reset can the DSP controller enter the normal operating state.
  • the power-on reset of the DSP controller is realized by applying a low level to its pin /RS, and the clock crystal oscillator of the crystal oscillator circuit is 30MHz.
  • the present invention also includes a JTAG interface for connecting the first DSP controller 3 and the second DSP controller 6 to an external emulator, and a temperature brake signal circuit for detecting the alarm signal of the frequency converter.
  • the temperature brake signal circuit and the switch The input terminal is connected with 4 phases, and the JTAG interface can also be used to program the 128K Flash in the DSP controller.
  • the temperature and brake signals are the inverter alarm signals, which are both 0/5V high and low level signals. When they are sent to the DSP controller, they need to undergo photoelectric isolation processing and level conversion processing.
  • the power devices in the first level conversion isolation output circuit 11 and the second level conversion isolation output circuit 14 are IGBT modules, the model of the IGBT module is FP75R12KE3, and the typical value of the gate drive voltage is ⁇ 15 V , and The maximum output voltage provided by the DSP controller is 3.3V, so if the controller wants to control the IGBT module, it needs to go through a level conversion circuit and a gate isolation drive circuit.
  • the temperature of the IGBT module in the first level conversion isolation output circuit 11 The output terminal is connected with the first DSP controller 3; the temperature output terminal of the IGBT module in the second level conversion isolation output circuit 14 is connected with the second DSP controller 6 to prevent the related components from being burnt due to excessive current.
  • the inverter DC bus is equipped with a DC voltage overvoltage protection circuit, mainly because the IGBT module collector emitter has limited withstand voltage and withstand back pressure.
  • the line voltage is less than 340V under heavy load, but the line voltage is as high as 440V during low power consumption. , Such a large voltage fluctuation range is very likely to cause overvoltage in the DC loop, so a DC voltage overvoltage protection circuit must be installed.
  • the invention also includes a direct overcurrent protection circuit for overcurrent protection of the IGBT module.
  • a direct overcurrent protection circuit for overcurrent protection of the IGBT module.
  • the DC bus capacitor is generally used to filter the AC component of the rectifier and stabilize the inverter supply voltage.
  • High-power IGBT modules must use low-inductance absorption circuits. It should be noted that the DC bus capacitor parameters need to be selected appropriately to achieve a good frequency conversion effect. The following formula can be used as a reference.
  • Io is the DC bus output current
  • f is the frequency of the incoming power supply before rectification
  • ⁇ V is the allowable peak-to-peak value of the DC bus voltage ripple. For example, if you want to control the voltage fluctuation range at about 0.5%, multiply the bus voltage value At 0.5%, the smaller the value, the more stable the bus voltage.
  • the first detection system 1 collects power grid voltage, stator voltage, rotor current and rotor speed information, and then inputs it to the first DSP controller 3 after being conditioned by the first signal conditioning circuit 2.
  • the first DSP controller 3 is based on the collected power grid
  • the voltage, stator voltage, rotor current and rotor speed information generate rotor-side PWM inverter pulse signals, and then the rotor-side PWM inverter pulse signals are level-shifted and signal isolated through the first level conversion isolation output circuit 11 After processing, it is input into the rotor-side IPM drive and protection circuit 12;
  • the second detection system 7 collects the AC side voltage and current information of the grid-side PWM converter, and then inputs it to the second DSP controller 6 after being conditioned by the second signal conditioning circuit 8.
  • the second DSP controller 6 is based on the collected grid-side voltage and current information.
  • the AC side voltage and current information of the PWM converter generates the grid-side PWM inverter pulse signal, and then the grid-side PWM inverter pulse signal is subjected to level conversion processing and signal isolation processing through the second level conversion isolation output circuit 14 Then input into the network side IPM drive and protection circuit 15.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Inverter Devices (AREA)

Abstract

Disclosed in the present invention is a wind power test platform converter control system, comprising a processor, a first signal conditioning circuit, a second signal conditioning circuit, an alternating current voltage and current sampling circuit, a first DSP controller, a second DSP controller, a third signal conditioning circuit, a first level conversion isolation output circuit, a rotor side IPM drive and protection circuit, a second level conversion isolation output circuit, a grid side IPM drive and protection circuit, a first detection system used for detecting grid voltage, stator current, rotor current and rotor rotation speed, a second detection system used for detecting the alternating current side voltage and current of a grid side PWM converter, and the alternating current voltage and current sampling circuit being used for detecting a direct current bus voltage; the present system enables a wind power test platform converter to implement testing work according to a program.

Description

一种风电试验平台变流器控制系统Converter control system of wind power test platform 技术领域Technical field

本发明属于风力发电领域，涉及一种风电试验平台变流器控制系统。The invention belongs to the field of wind power generation, and relates to a wind power test platform converter control system.

背景技术Background technique

进行科学研究，只进行理论分析以及计算机仿真是不全面的，为了充分验证仿真模型是否实用、软件功能是否正确，现实中往往需要搭建物理实验平台进行验证。对于风力发电机组的科学研究同样如此，但是现实中由于条件的限制，通常大多数的实验室不具备的风场机组运行环境，如何在实验室条件下搭建一套模拟实际风况下风力机系统成为目前风电研究者关心的问题。Scientific research, only theoretical analysis and computer simulation is not comprehensive. In order to fully verify whether the simulation model is practical and the software function is correct, it is often necessary to build a physical experiment platform for verification in reality. The same is true for the scientific research of wind turbines, but in reality, due to the limitations of conditions, usually most laboratories do not have the operating environment of wind farms. How to build a wind turbine system that simulates actual wind conditions under laboratory conditions It has become a concern of current wind power researchers.

基于以上原因，在实验室环境下设计了一套18KW双馈风力发电机组实验平台。该平台模拟实际风场环境机组运行特征，可以任意设定风速变化范围，进行风电机组相关实验研究。通过建立随机风速模型，以及依据风轮输出转矩特性的计算公式，利用西门子公司的PLC控制器控制伺服电机，模拟风轮机输出特性，然后通过传动链条带动风机低速轴转动，模拟风力机的实际运行；通过变流器控制双馈电机并网、发电过程；整个试验系统的由主控制器ARM控制，然而现有技术中没有公开各风电试验平台变流器的控制系统，不能使得变流器按照设定的程序完成试验工作。Based on the above reasons, a set of 18KW doubly-fed wind turbine experimental platform was designed in a laboratory environment. The platform simulates the operating characteristics of the actual wind farm environment, and can set the range of wind speed changes arbitrarily, and conduct related experimental research on wind turbines. Through the establishment of a random wind speed model and a calculation formula based on the output torque characteristics of the wind turbine, the PLC controller of Siemens is used to control the servo motor to simulate the output characteristics of the wind turbine, and then the low-speed shaft rotation of the wind turbine is driven by the transmission chain to simulate the actual situation of the wind turbine. Operation; control the grid connection and power generation process of doubly-fed motors through the converter; the entire test system is controlled by the main controller ARM, but the prior art does not disclose the control system of the converters of each wind power test platform, and the converter cannot be used. Complete the test work according to the set procedure.

技术解决方案Technical solutions

本发明的目的在于克服上述现有技术的缺点，提供了一种风电试验平台变流器控制系统，该系统能够使得风电试验平台变流器按照程序完成试验工作。The purpose of the present invention is to overcome the above shortcomings of the prior art and provide a wind power test platform converter control system, which can enable the wind power test platform converter to complete the test work according to the program.

为达到上述目的，本发明所述的风电试验平台变流器控制系统包括处理器、第一信号调理电路、第二信号调理电路、交流电压电流采样电路、第一DSP控制器、第二DSP控制器、第三信号调理电路、第一电平转换隔离输出电路、转子侧IPM驱动及保护电路、第二电平转换隔离输出电路、网侧IPM驱动及保护电路、用于检测电网电压、定子电流、转子电流及转子转速的第一检测系统、用于检测网侧PWM变流器交流侧电压及电流的第二检测系统、用于检测直流母线电压的交流电压电流采样电路；To achieve the above objectives, the wind power test platform converter control system of the present invention includes a processor, a first signal conditioning circuit, a second signal conditioning circuit, an AC voltage and current sampling circuit, a first DSP controller, and a second DSP controller. The third signal conditioning circuit, the first level conversion isolation output circuit, the rotor side IPM drive and protection circuit, the second level conversion isolation output circuit, the grid side IPM drive and protection circuit, used to detect the grid voltage, stator current 1. The first detection system for rotor current and rotor speed, the second detection system for detecting AC side voltage and current of the grid-side PWM converter, and the AC voltage and current sampling circuit for detecting DC bus voltage;

第一检测系统的输出端经第一信号调理电路与第一DSP控制器的输入端相连接，第二检测系统的输出端经第二信号调理电路与第二DSP控制器的输入端相连接，交流电压电流采样电路的输出端经第三信号调理电路与第二DSP控制器的输入端相连接，第一DSP控制器的输出端经第一电平转换隔离输出电路与转子侧IPM驱动及保护电路的控制端相连接，第二DSP控制器的输出端经第二电平转换隔离输出电路与网侧IPM驱动及保护电路的控制端相连接，第一DSP控制器与第二DSP控制器相连接，处理器与第一DSP控制器及第二DSP控制器相连接。The output of the first detection system is connected to the input of the first DSP controller via the first signal conditioning circuit, and the output of the second detection system is connected to the input of the second DSP controller via the second signal conditioning circuit, The output terminal of the AC voltage and current sampling circuit is connected to the input terminal of the second DSP controller through the third signal conditioning circuit, and the output terminal of the first DSP controller is driven and protected by the rotor-side IPM through the first level conversion isolation output circuit The control end of the circuit is connected, the output end of the second DSP controller is connected to the control end of the network-side IPM drive and protection circuit through the second level conversion isolation output circuit, and the first DSP controller is connected to the second DSP controller. Connected, the processor is connected with the first DSP controller and the second DSP controller.

还包括开关量输入端、第一开关量输出端、第二开关量输出端及开关量输入隔离电路，其中，开关量输入端经开关量输入隔离电路与第一DSP控制器相连接，第一开关量输出端与第一DSP控制器相连接，第二开关量输出端与第二DSP控制器相连接。It also includes a switch input terminal, a first switch output terminal, a second switch output terminal, and a switch input isolation circuit. The switch input terminal is connected to the first DSP controller via the switch input isolation circuit. The switch output terminal is connected with the first DSP controller, and the second switch output terminal is connected with the second DSP controller.

第一DSP控制器与第二DSP控制器之间通过CAN总线相连接。The first DSP controller and the second DSP controller are connected through a CAN bus.

处理器通过CAN总线与第一DSP控制器及第二DSP控制器相连接。The processor is connected with the first DSP controller and the second DSP controller through the CAN bus.

第一DSP控制器及第二DSP控制器的型号均为TMS320F2812。The models of the first DSP controller and the second DSP controller are both TMS320F2812.

还包括用于对第一DSP控制器及第二DSP控制器进行供电的电源管理芯片TPS73HD301。It also includes a power management chip TPS73HD301 for supplying power to the first DSP controller and the second DSP controller.

还包括用于为第一DSP控制器及第二DSP控制器提供时钟信号的晶振电路以及用于对第一DSP控制器及第二DSP控制器进行复位的复位电路。It also includes a crystal oscillator circuit for providing clock signals for the first DSP controller and the second DSP controller, and a reset circuit for resetting the first DSP controller and the second DSP controller.

还包括用于第一DSP控制器及第二DSP控制器与外界仿真器连接的JTAG接口以及用于检测变频器报警信号的温度刹车信号电路，其中，温度刹车信号电路与开关量输入端相连接。It also includes a JTAG interface for connecting the first DSP controller and the second DSP controller to an external emulator, and a temperature brake signal circuit for detecting the alarm signal of the inverter, where the temperature brake signal circuit is connected to the switch input terminal .

第一电平转换隔离输出电路及第二电平转换隔离输出电路中的功率器件均为IGBT模块，所述IGBT模块的型号为FP75R12KE3，第一电平转换隔离输出电路中IGBT模块的温度输出端与第一DSP控制器相连接；第二电平转换隔离输出电路中IGBT模块的温度输出端与第二DSP控制器相连接。The power devices in the first level conversion isolation output circuit and the second level conversion isolation output circuit are IGBT modules, the model of the IGBT module is FP75R12KE3, the temperature output terminal of the IGBT module in the first level conversion isolation output circuit It is connected with the first DSP controller; the temperature output end of the IGBT module in the second level conversion isolation output circuit is connected with the second DSP controller.

还包括用于对IGBT模块进行过流保护的过流保护电路，变频器直流母线上设置有直流电压过压保护电路。It also includes an over-current protection circuit for over-current protection of the IGBT module, and a DC voltage over-voltage protection circuit is arranged on the DC bus of the inverter.

有益效果Beneficial effect

本发明具有以下有益效果：The present invention has the following beneficial effects:

本发明所述的风电试验平台变流器控制系统在具体操作时，第一DSP控制器通过第一检测系统采集电网电压、定子电压、转子电流及转子转速信息，根据采集到的电网电压、定子电压、转子电流及转子转速信息产生转子侧PWM逆变器脉冲信号，然后通过第一电平转换隔离输出电路进行电平转换及信号隔离处理后输入到转子侧IPM驱动及保护电路中；第二DSP控制器通过第二检测系统采集网侧PWM变换器交流侧电压及电流信息，再根据采集到的网侧PWM变换器交流侧电压及电流信息产生网侧PWM逆变器脉冲信号，然后进行电平转换处理及信号隔离处理后输入到网侧IPM驱动及保护电路中，继而使得风电试验平台变流器按照程序完成试验工作，操作方便、简单，实用性极强。During the specific operation of the converter control system of the wind power test platform of the present invention, the first DSP controller collects grid voltage, stator voltage, rotor current and rotor speed information through the first detection system, and according to the collected grid voltage, stator The voltage, rotor current and rotor speed information generate the rotor-side PWM inverter pulse signal, which is then input into the rotor-side IPM drive and protection circuit after level conversion and signal isolation processing through the first level conversion isolation output circuit; The DSP controller collects the AC side voltage and current information of the grid-side PWM converter through the second detection system, and then generates the grid-side PWM inverter pulse signal according to the collected AC-side voltage and current information of the grid-side PWM converter, and then conducts electricity After level conversion processing and signal isolation processing, it is input to the grid-side IPM drive and protection circuit, which then enables the wind power test platform converter to complete the test work in accordance with the procedure, which is convenient and simple to operate and extremely practical.

附图说明Description of the drawings

图1为风电试验平台的结构示意图；Figure 1 is a schematic diagram of the structure of the wind power test platform;

图2为本发明的结构示意图。Figure 2 is a schematic diagram of the structure of the present invention.

其中，1为第一检测系统、2为第一信号调理电路、3为第一DSP控制器、4为开关量输入端、5为开关量输入隔离电路、6为第二DSP控制器、7为第二检测系统、8为第二信号调理电路、9为交流电压电流采样电路、10为第三信号调理电路、11为第一电平转换隔离输出电路、12为转子侧IPM驱动及保护电路、13为第一开关量输出端、14为第二电平转换隔离输出电路、15为网侧IPM驱动及保护电路、16为第二开关量输出端。Among them, 1 is the first detection system, 2 is the first signal conditioning circuit, 3 is the first DSP controller, 4 is the switch input terminal, 5 is the switch input isolation circuit, 6 is the second DSP controller, and 7 is the The second detection system, 8 is the second signal conditioning circuit, 9 is the AC voltage and current sampling circuit, 10 is the third signal conditioning circuit, 11 is the first level conversion isolation output circuit, 12 is the rotor side IPM drive and protection circuit, 13 is the first switch output terminal, 14 is the second level conversion isolation output circuit, 15 is the network side IPM drive and protection circuit, and 16 is the second switch output terminal.

本发明的实施方式Embodiments of the present invention

下面结合附图对本发明做进一步详细描述：The present invention will be further described in detail below in conjunction with the accompanying drawings:

参考图2，本发明所述的风电试验平台变流器控制系统包括处理器、第一信号调理电路2、第二信号调理电路8、交流电压电流采样电路9、第一DSP控制器3、第二DSP控制器6、第三信号调理电路10、第一电平转换隔离输出电路11、转子侧IPM驱动及保护电路12、第二电平转换隔离输出电路14、网侧IPM驱动及保护电路15、用于检测电网电压、定子电流、转子电流及转子转速的第一检测系统1、用于检测网侧PWM变流器交流侧电压及电流的第二检测系统7、用于检测直流母线电压的交流电压电流采样电路9；第一检测系统1的输出端经第一信号调理电路2与第一DSP控制器3的输入端相连接，第二检测系统7的输出端经第二信号调理电路8与第二DSP控制器6的输入端相连接，交流电压电流采样电路9的输出端经第三信号调理电路10与第二DSP控制器6的输入端相连接，第一DSP控制器3的输出端经第一电平转换隔离输出电路11与转子侧IPM驱动及保护电路12的控制端相连接，第二DSP控制器6的输出端经第二电平转换隔离输出电路14与网侧IPM驱动及保护电路15的控制端相连接，第一DSP控制器3与第二DSP控制器6相连接，处理器与第一DSP控制器3及第二DSP控制器6相连接。Referring to Figure 2, the wind power test platform converter control system of the present invention includes a processor, a first signal conditioning circuit 2, a second signal conditioning circuit 8, an AC voltage and current sampling circuit 9, a first DSP controller 3, and a second signal conditioning circuit. Two DSP controller 6, the third signal conditioning circuit 10, the first level conversion isolation output circuit 11, the rotor side IPM drive and protection circuit 12, the second level conversion isolation output circuit 14, the network side IPM drive and protection circuit 15 , The first detection system used to detect the grid voltage, stator current, rotor current and rotor speed 1, the second detection system used to detect the AC side voltage and current of the grid-side PWM converter 7, the second detection system used to detect the DC bus voltage AC voltage and current sampling circuit 9; the output terminal of the first detection system 1 is connected to the input terminal of the first DSP controller 3 via the first signal conditioning circuit 2, and the output terminal of the second detection system 7 is connected via the second signal conditioning circuit 8 Connected to the input end of the second DSP controller 6, the output end of the AC voltage and current sampling circuit 9 is connected to the input end of the second DSP controller 6 via the third signal conditioning circuit 10, and the output of the first DSP controller 3 The output terminal of the second DSP controller 6 is connected to the control terminal of the rotor-side IPM drive and protection circuit 12 through the first level conversion isolation output circuit 11, and the output terminal of the second DSP controller 6 is connected to the grid side IPM drive through the second level conversion isolation output circuit 14 It is connected to the control end of the protection circuit 15, the first DSP controller 3 is connected to the second DSP controller 6, and the processor is connected to the first DSP controller 3 and the second DSP controller 6.

本发明还包括开关量输入端4、第一开关量输出端13、第二开关量输出端16及开关量输入隔离电路5，其中，开关量输入端4经开关量输入隔离电路5与第一DSP控制器3相连接，第一开关量输出端13与第一DSP控制器3相连接，第二开关量输出端16与第二DSP控制器6相连接；第一DSP控制器3与第二DSP控制器6之间通过CAN总线相连接；处理器通过CAN总线与第一DSP控制器3及第二DSP控制器6相连接，通过处理器控制变频器的起、停、监控等。The present invention also includes a digital input terminal 4, a first digital output terminal 13, a second digital output terminal 16 and a digital input isolation circuit 5, wherein the digital input 4 is connected to the first digital input isolation circuit 5 via the digital input isolation circuit 5. The DSP controller 3 is connected, the first switch output terminal 13 is connected to the first DSP controller 3, the second switch output terminal 16 is connected to the second DSP controller 6; the first DSP controller 3 is connected to the second DSP controller 6 The DSP controllers 6 are connected through the CAN bus; the processor is connected with the first DSP controller 3 and the second DSP controller 6 through the CAN bus, and the start, stop, and monitoring of the frequency converter are controlled by the processor.

第一DSP控制器3及第二DSP控制器6的型号均为TMS320F2812。The models of the first DSP controller 3 and the second DSP controller 6 are both TMS320F2812.

本发明还包括用于对第一DSP控制器3及第二DSP控制器6进行供电的电源管理芯片TPS73HD301，TPS73HD301不但能够提供第一DSP控制器3及第二DSP控制器6的电源，同时还提供第一DSP控制器3及第二DSP控制器6的上电复位信号，即在TPS73HD301上电时，会自动产生一个200ms的低电平复位脉冲，可靠地对第一DSP控制器3及第二DSP控制器6进行复位。The present invention also includes a power management chip TPS73HD301 for supplying power to the first DSP controller 3 and the second DSP controller 6. The TPS73HD301 can not only provide power to the first DSP controller 3 and the second DSP controller 6, but also Provide the power-on reset signal of the first DSP controller 3 and the second DSP controller 6, that is, when the TPS73HD301 is powered on, it will automatically generate a low-level reset pulse of 200ms, which can reliably provide the first DSP controller 3 and the first DSP controller 3 and The second DSP controller 6 performs a reset.

本发明还包括用于为第一DSP控制器3及第二DSP控制器6提供时钟信号的晶振电路以及用于对第一DSP控制器3及第二DSP控制器6进行复位的复位电路，上电复位主要完成DSP控制器内部所有重要状态机初始状态的配置，只有进行了正确的上电复位，DSP控制器才能进入正常运行状态。DSP控制器的上电复位时通过对其引脚/RS施加低电平来实现，晶振电路的时钟晶振选用30MHz。The present invention also includes a crystal oscillator circuit for providing clock signals for the first DSP controller 3 and the second DSP controller 6, and a reset circuit for resetting the first DSP controller 3 and the second DSP controller 6. The electric reset mainly completes the configuration of the initial state of all important state machines inside the DSP controller. Only after the correct power-on reset can the DSP controller enter the normal operating state. The power-on reset of the DSP controller is realized by applying a low level to its pin /RS, and the clock crystal oscillator of the crystal oscillator circuit is 30MHz.

本发明还包括用于第一DSP控制器3及第二DSP控制器6与外界仿真器连接的JTAG接口以及用于检测变频器报警信号的温度刹车信号电路，其中，温度刹车信号电路与开关量输入端4相连接，JTAG接口还可用来对DSP控制器内128K的Flash编程。温度、刹车信号是变频器报警信号，均为0/5V高低电平信号，将其送给DSP控制器时需要经过光电隔离处理和电平转换处理。The present invention also includes a JTAG interface for connecting the first DSP controller 3 and the second DSP controller 6 to an external emulator, and a temperature brake signal circuit for detecting the alarm signal of the frequency converter. The temperature brake signal circuit and the switch The input terminal is connected with 4 phases, and the JTAG interface can also be used to program the 128K Flash in the DSP controller. The temperature and brake signals are the inverter alarm signals, which are both 0/5V high and low level signals. When they are sent to the DSP controller, they need to undergo photoelectric isolation processing and level conversion processing.

第一电平转换隔离输出电路11及第二电平转换隔离输出电路14中的功率器件均为IGBT模块，所述IGBT模块的型号为FP75R12KE3，其门极驱动电压典型值为±15 V，而DSP控制器所提供的最大输出电压为3.3V，故控制器要想对IGBT模块控制就需要经过电平转换电路及门极隔离驱动电路，第一电平转换隔离输出电路11中IGBT模块的温度输出端与第一DSP控制器3相连接；第二电平转换隔离输出电路14中IGBT模块的温度输出端与第二DSP控制器6相连接，以防电流过大烧毁相关器件。 The power devices in the first level conversion isolation output circuit 11 and the second level conversion isolation output circuit 14 are IGBT modules, the model of the IGBT module is FP75R12KE3, and the typical value of the gate drive voltage is ±15 V , and The maximum output voltage provided by the DSP controller is 3.3V, so if the controller wants to control the IGBT module, it needs to go through a level conversion circuit and a gate isolation drive circuit. The temperature of the IGBT module in the first level conversion isolation output circuit 11 The output terminal is connected with the first DSP controller 3; the temperature output terminal of the IGBT module in the second level conversion isolation output circuit 14 is connected with the second DSP controller 6 to prevent the related components from being burnt due to excessive current.

变频器直流母线上设置有直流电压过压保护电路，主要因为IGBT模块集射极耐压及承受反压能力有限，通常在重负荷时线电压小于340V，但是在用电低谷期线电压高达440V，如此大的电压波动范围，极有可能导致直流回路过压，因此必须设置直流电压过压保护电路。The inverter DC bus is equipped with a DC voltage overvoltage protection circuit, mainly because the IGBT module collector emitter has limited withstand voltage and withstand back pressure. Generally, the line voltage is less than 340V under heavy load, but the line voltage is as high as 440V during low power consumption. , Such a large voltage fluctuation range is very likely to cause overvoltage in the DC loop, so a DC voltage overvoltage protection circuit must be installed.

本发明还包括用于对IGBT模块进行过流保护的直过流保护电路。IGBT模块虽然可以承受短时间的过流，但一旦超出安全区，则会永久地损坏，所以需要设置过流保护电路。The invention also includes a direct overcurrent protection circuit for overcurrent protection of the IGBT module. Although the IGBT module can withstand a short-term overcurrent, once it exceeds the safety zone, it will be permanently damaged, so an overcurrent protection circuit is required.

根据一般电压型变频器原理，直流母线电容一般用于滤除整流器交流成分和稳定逆变器供电电压。大功率IGBT模块必须采用低感吸收电路。需要说明的是，直流母线电容参数需要选取合适才能起到良好的变频效果，可以借鉴下式作为参考。According to the principle of general voltage type inverter, the DC bus capacitor is generally used to filter the AC component of the rectifier and stabilize the inverter supply voltage. High-power IGBT modules must use low-inductance absorption circuits. It should be noted that the DC bus capacitor parameters need to be selected appropriately to achieve a good frequency conversion effect. The following formula can be used as a reference.

C＝0.2Io/（8f×ΔV）C=0.2Io/(8f×ΔV)

其中，Io为直流母线输出电流；f为整流前，进线电源的频率；ΔV为允许的直流母线电压纹波峰峰值，例如，若想控制电压波动范围在0.5％左右，就将母线电压值乘以0.5％，该值越小，母线电压就越稳。Among them, Io is the DC bus output current; f is the frequency of the incoming power supply before rectification; ΔV is the allowable peak-to-peak value of the DC bus voltage ripple. For example, if you want to control the voltage fluctuation range at about 0.5%, multiply the bus voltage value At 0.5%, the smaller the value, the more stable the bus voltage.

本发明的具体工作过程为：The specific working process of the present invention is:

第一检测系统1采集电网电压、定子电压、转子电流及转子转速信息，然后经第一信号调理电路2调理后输入到第一DSP控制器3中，第一DSP控制器3根据采集到的电网电压、定子电压、转子电流及转子转速信息产生转子侧PWM逆变器脉冲信号，然后将所述转子侧PWM逆变器脉冲信号经第一电平转换隔离输出电路11进行电平转换及信号隔离处理后输入到转子侧IPM驱动及保护电路12中；The first detection system 1 collects power grid voltage, stator voltage, rotor current and rotor speed information, and then inputs it to the first DSP controller 3 after being conditioned by the first signal conditioning circuit 2. The first DSP controller 3 is based on the collected power grid The voltage, stator voltage, rotor current and rotor speed information generate rotor-side PWM inverter pulse signals, and then the rotor-side PWM inverter pulse signals are level-shifted and signal isolated through the first level conversion isolation output circuit 11 After processing, it is input into the rotor-side IPM drive and protection circuit 12;

第二检测系统7采集网侧PWM变换器交流侧电压及电流信息，再经第二信号调理电路8调理后输入到第二DSP控制器6中，第二DSP控制器6根据采集到的网侧PWM变换器交流侧电压及电流信息产生网侧PWM逆变器脉冲信号，然后将所述网侧PWM逆变器脉冲信号经第二电平转换隔离输出电路14进行电平转换处理及信号隔离处理后输入到网侧IPM驱动及保护电路15中。The second detection system 7 collects the AC side voltage and current information of the grid-side PWM converter, and then inputs it to the second DSP controller 6 after being conditioned by the second signal conditioning circuit 8. The second DSP controller 6 is based on the collected grid-side voltage and current information. The AC side voltage and current information of the PWM converter generates the grid-side PWM inverter pulse signal, and then the grid-side PWM inverter pulse signal is subjected to level conversion processing and signal isolation processing through the second level conversion isolation output circuit 14 Then input into the network side IPM drive and protection circuit 15.

Claims (10)

一种风电试验平台变流器控制系统，其特征在于，包括处理器、第一信号调理电路（2）、第二信号调理电路（8）、交流电压电流采样电路（9）、第一DSP控制器（3）、第二DSP控制器（6）、第三信号调理电路（10）、第一电平转换隔离输出电路（11）、转子侧IPM驱动及保护电路（12）、第二电平转换隔离输出电路（14）、网侧IPM驱动及保护电路（15）、用于检测电网电压、定子电流、转子电流及转子转速的第一检测系统（1）、用于检测网侧PWM变流器交流侧电压及电流的第二检测系统（7）、用于检测直流母线电压的交流电压电流采样电路（9）；A wind power test platform converter control system, which is characterized by comprising a processor, a first signal conditioning circuit (2), a second signal conditioning circuit (8), an AC voltage and current sampling circuit (9), and a first DSP control (3), the second DSP controller (6), the third signal conditioning circuit (10), the first level conversion isolation output circuit (11), the rotor side IPM drive and protection circuit (12), the second level Conversion isolation output circuit (14), grid-side IPM drive and protection circuit (15), the first detection system (1) for detecting grid voltage, stator current, rotor current and rotor speed, and for detecting grid-side PWM converter The second detection system (7) for the voltage and current on the AC side of the converter, and the AC voltage and current sampling circuit (9) for detecting the DC bus voltage; 第一检测系统（1）的输出端经第一信号调理电路（2）与第一DSP控制器（3）的输入端相连接，第二检测系统（7）的输出端经第二信号调理电路（8）与第二DSP控制器（6）的输入端相连接，交流电压电流采样电路（9）的输出端经第三信号调理电路（10）与第二DSP控制器（6）的输入端相连接，第一DSP控制器（3）的输出端经第一电平转换隔离输出电路（11）与转子侧IPM驱动及保护电路（12）的控制端相连接，第二DSP控制器（6）的输出端经第二电平转换隔离输出电路（14）与网侧IPM驱动及保护电路（15）的控制端相连接，第一DSP控制器（3）与第二DSP控制器（6）相连接，处理器与第一DSP控制器（3）及第二DSP控制器（6）相连接。The output terminal of the first detection system (1) is connected to the input terminal of the first DSP controller (3) through the first signal conditioning circuit (2), and the output terminal of the second detection system (7) is connected through the second signal conditioning circuit (8) Connected to the input terminal of the second DSP controller (6), the output terminal of the AC voltage and current sampling circuit (9) passes through the third signal conditioning circuit (10) and the input terminal of the second DSP controller (6) The output terminal of the first DSP controller (3) is connected to the control terminal of the rotor-side IPM drive and protection circuit (12) through the first level conversion isolation output circuit (11), and the second DSP controller (6) The output terminal of) is connected to the control terminal of the network-side IPM drive and protection circuit (15) through the second level conversion isolation output circuit (14), the first DSP controller (3) and the second DSP controller (6) The processor is connected with the first DSP controller (3) and the second DSP controller (6). 根据权利要求1所述的风电试验平台变流器控制系统，其特征在于，还包括开关量输入端（4）、第一开关量输出端（13）、第二开关量输出端（16）及开关量输入隔离电路（5），其中，开关量输入端（4）经开关量输入隔离电路（5）与第一DSP控制器（3）相连接，第一开关量输出端（13）与第一DSP控制器（3）相连接，第二开关量输出端（16）与第二DSP控制器（6）相连接。The wind power test platform converter control system according to claim 1, further comprising a switch input terminal (4), a first switch output terminal (13), a second switch output terminal (16), and The switch input isolation circuit (5), wherein the switch input terminal (4) is connected to the first DSP controller (3) via the switch input isolation circuit (5), and the first switch output terminal (13) is connected to the first DSP controller (3). A DSP controller (3) is connected, and the second switch output terminal (16) is connected with a second DSP controller (6). 根据权利要求1所述的风电试验平台变流器控制系统，其特征在于，第一DSP控制器（3）与第二DSP控制器（6）之间通过CAN总线相连接。The wind power test platform converter control system according to claim 1, wherein the first DSP controller (3) and the second DSP controller (6) are connected through a CAN bus. 根据权利要求1所述的风电试验平台变流器控制系统，其特征在于，处理器通过CAN总线与第一DSP控制器（3）及第二DSP控制器（6）相连接。The wind power test platform converter control system according to claim 1, wherein the processor is connected to the first DSP controller (3) and the second DSP controller (6) through a CAN bus. 根据权利要求1所述的风电试验平台变流器控制系统，其特征在于，第一DSP控制器（3）及第二DSP控制器（6）的型号均为TMS320F2812。The wind power test platform converter control system according to claim 1, wherein the models of the first DSP controller (3) and the second DSP controller (6) are both TMS320F2812. 根据权利要求1所述的风电试验平台变流器控制系统，其特征在于，还包括用于对第一DSP控制器（3）及第二DSP控制器（6）进行供电的电源管理芯片TPS73HD301。The wind power test platform converter control system according to claim 1, further comprising a power management chip TPS73HD301 for supplying power to the first DSP controller (3) and the second DSP controller (6). 根据权利要求1所述的风电试验平台变流器控制系统，其特征在于，还包括用于为第一DSP控制器（3）及第二DSP控制器（6）提供时钟信号的晶振电路以及用于对第一DSP控制器（3）及第二DSP控制器（6）进行复位的复位电路。The wind power test platform converter control system according to claim 1, characterized in that it further comprises a crystal oscillator circuit for providing clock signals for the first DSP controller (3) and the second DSP controller (6), and In a reset circuit for resetting the first DSP controller (3) and the second DSP controller (6). 根据权利要求1所述的风电试验平台变流器控制系统，其特征在于，还包括用于第一DSP控制器（3）及第二DSP控制器（6）与外界仿真器连接的JTAG接口以及用于检测变频器报警信号的温度刹车信号电路，其中，温度刹车信号电路与开关量输入端（4）相连接。The wind power test platform converter control system according to claim 1, further comprising a JTAG interface for connecting the first DSP controller (3) and the second DSP controller (6) with an external emulator, and The temperature brake signal circuit used to detect the alarm signal of the inverter, wherein the temperature brake signal circuit is connected to the switch input terminal (4). 根据权利要求1所述的风电试验平台变流器控制系统，其特征在于，第一电平转换隔离输出电路（11）及第二电平转换隔离输出电路（14）中的功率器件均为IGBT模块，所述IGBT模块的型号为FP75R12KE3，第一电平转换隔离输出电路（11）中IGBT模块的温度输出端与第一DSP控制器（3）相连接；第二电平转换隔离输出电路（14）中IGBT模块的温度输出端与第二DSP控制器（6）相连接。The wind power test platform converter control system according to claim 1, wherein the power devices in the first level conversion isolated output circuit (11) and the second level conversion isolated output circuit (14) are IGBTs. Module, the model of the IGBT module is FP75R12KE3, the temperature output end of the IGBT module in the first level conversion isolation output circuit (11) is connected with the first DSP controller (3); the second level conversion isolation output circuit ( 14) The temperature output terminal of the IGBT module is connected with the second DSP controller (6). 根据权利要求1所述的风电试验平台变流器控制系统，其特征在于，还包括用于对IGBT模块进行过流保护的过流保护电路，变频器直流母线上设置有直流电压过压保护电路。The wind power test platform converter control system according to claim 1, further comprising an overcurrent protection circuit for overcurrent protection of the IGBT module, and a DC voltage overvoltage protection circuit is provided on the DC bus of the inverter .
PCT/CN2021/098995 2020-06-09 2021-06-08 Wind power test platform converter control system Ceased WO2021249404A1 (en)

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