Research On Simulation And Control Of Wind Power Generation And Frequency Converter

Wind energy resources are a renewable and clean energy source.Wind power can improve energy problems caused by the depletion of non-renewable energy sources such as coal and oil,while improving the environment.Therefore,research on wind power generation is of great significance.The doubly-fed wind turbine(DFIG)is one of the most widely used models.In this paper,the structure and communication design of the real-time simulation system and the FPGA simulation program design of the inverter are carried out with the DFIG as the research object.In order to study the DFIG and inverter,this paper develops a semi-physical real?time simulation system that can simulate the whole wind power generation process in real time.This paper mainly completes the following contents:Firstly,the doubly-fed wind turbine and the inverter are respectively carried out.The operation principle and control strategy analysis are carried out,and the mathematical model is established by LabVIEW.Then the FPGA program of the inverter is designed,which is mainly to write the inverter program in the FPGA board and write the main program in the industrial computer to realize the host.The program interacts with the data of the FPGA board;finally,the structure and communication of the whole real-time simulation system are designed,mainly the DMA communication program,the PROFIBUS communication program,and the UDP communication between the machine and the upper monitoring system,and the design of the I/O interface of the simulation system,mainly the I/O interface design of the FPGA board,the I/O interface design of the analog input and output board,and The I/O interface design of the main control system.In addition,in order to simulate the whole process of wind power generation,this paper combines the fan part program in the laboratory,and connects the model simulation system,the main control system and the upper monitoring system according to the real-time simulation system structure designed in this paper.Complete real-time simulation system.Finally,the simulation system is built into the grid-connected simulation test under the wind speed data collected by the actual wind field.The experimental simulation results are analyzed.The results show that the real-time simulation system scheme and the inverter module designed in this paper are reasonable and can simulate the actual DFIG generating operation process.