20kW Vertical Axis Switched Reluctance Wind Power System And Control Algorithm Research

Distributed wind power generation system is the trend of wind energy utilization in the future.The vertical axis wind turbine has a small area and low cost,which meets the needs of distributed wind power generation.Switched reluctance generators have low cost,simple structure,high cost performance,and have the basic conditions for the popularization and use of distributed wind power generation.In this thesis,theoretical research and simulation verification of 20kW switched reluctance wind power generation system are carried out,and nonlinear mathematical models of vertical axis wind turbines and switched reluctance generators are built.The sliding mode controller is introduced into the MPPT control algorithm to solve the problem of large fluctuations in the output voltage and output power of the traditional PI control.The inverter grid-connected part adopts a VFOC control algorithm and a three-level space vector pulse-width modulation topology,which is suitable for the cost application of distributed wind power generation systems with small and medium power levels,and can improve the grid-connected power quality at the same time.The thesis carried out the hardware design of the main controller,power converter and inverter circuit of the switched reluctance wind power generation system,and completed the selection and calculation of the main switching devices,filters and other equipment.The paper carries out design and simulation verification of some system software.The paper uses the laboratory switched reluctance generator prototype to test and analyze part of the software.