Research On Hardware In The Loop Simulation Platform For Wind Turbine Control System

With the continuous development of computer science,the application of simulation technology was constantly expanded,and the simulation theory and the basic tools were constantly innovated. In today's industrial society,through the simulation technology to improve the reliability of the product,shorten the development cycle,reduce the cost of testing has become a new trend.The main control system was the core equipment of wind turbines,and the reliability of the main control system determines the stability of the whole wind turbine. There are series of problems have emerged in the projects of localization of embedded PLC system,such as high cost,low efficiency,difficult to reproduce the problem of fault.On the basis of analyzing the working flow of main control system of wind turbine,combining with current foundation,a method of hardware in the loop simulation idea for referenced.A hardware in the loop simulation platform is developed from the technical scheme,hardware platform,software environment and so on. Through this platform,can set up a wind turbine model,combine with the HMI,SCADA system to realization of system level testing of main control system of wind turbine.Can cooperate with main control system environmental test of high and low temperature,vibration,electromagnetic interference,improve the reliability.The subject needs of main control system test are analyzed,and the significance of the hardware in the loop simulation platform is discussed in this paper.The working principle of each hardware module in the hardware in the loop simulation platform is analyzed,which is divided into four kinds of modules: AIO,DIO,CAN and program control resistance.From the point of view of software,the hardware processor module is divided into master-slave structure.In order to ensure the processing ability of the main processor,the co-processor task is implemented by FPGA.Based on the underlying MIO library function,the corresponding library function of each IO module is designed,and the corresponding interface module is designed in the LIB Library of Simulink,and the configuration mode of each module is set.Through RPC to achieve the hardware system and the software environment of data interaction,completed the IO on the underlying hardware modules of the Simulink port of the direct control. In order to make the main control system can be obtained in the laboratory and external parameters of wind field in real environment consistent,Based on the control demand of wind turbine construction of the hub system,inverter system,pitch system mathematical model,designed the state transition logic relationship.construction of temperature system is completed based on the actual temperature data.In order to achieve the CAN communication link function the CANopen communication protocol slave station was set.The control strategy of the main control system of wind turbine is analyzed.To build a semi physical simulation platform in the laboratory environment for system level testing of the wind turbine control system,through the SCADA system to verify the simulation of wind farm.Practice has proved that the hard ware in the loop system can be very good with the main control system level test.The hardware in the loop simulation test,which breaks through the difficult problem of the main control system of the wind turbine,improves the test efficiency,and the main control system of the wind turbine will be a stable,reliable and efficient "Chinese heart".