Design And Research Of Universal Double PWM Converter

Wind turbine simulation is an important part of the wind power technology research,and the converter part is an important part of the wind power generation system.In this paper,after analyzing the dual PWM converter and its related filtering in wind turbine,then uses LabVIEW software to program and verify the relevant research,realizes the automatic calculation of the converter filtering parameters under different requirements.Finally,based on LabVIEW FPGA The hardware realizes the converter’s modularization.This paper firstly introduces the common inverter type of wind turbine and the simulation technology of wind power generation.Then it introduces the SVPWM modulation theory of the inverter and introduces the dual PWM inverter running in direct drive and doubly-fed wind turbine difference.Based on the analysis of the circuit structure of the machine-side and grid-side frequency converters with different filtering types,the related mathematical model is established.For converter with different filter types,the formulas for calculating the relevant rational filter parameters are analyzed and obtained.Based on this theory,the floating-point model and control program of converter are programmed through LabVIEW environment to verify the correctness of relevant theories.Further considering the particularity of the converter module,from the point of view of fast and stable hardware platform,we first set up the relevant fixed-point program under the LabVIEW environment and verified the correctness and accuracy requirements of the related program compilation.FPGA programming of dual PWM converters with LabVIEW FPGA using an NI FPGA board.In this paper,a separate converter hardware simulation module,on the one hand is conducive to the preparation of the program to avoid the interaction between multiple FPGA hardware,on the other hand is conducive to embed into other simulation systems,making the module has better flexibility.