PWM整流器设计

PWM RECTIFIER DESIGNABSTRACTThe rapid consumption of fossil fuels such as coal,oil and natural gas has not onlycaused an energy crisis,but also caused an increase in environmental pollution.Due to theclean and convenient transportation of electricity,it plays an important role in thedevelopment of national industries in various countries.With the widespread use of electricity,more and more loads place demands on the types of electricity used,and certain powerconversion equipment is required.With the rapid development of power electronicstechnology,the application fields of rectifiers are also expanding.In the state of voltagebalance,the PWM rectifier has a bidirectional flow of energy,and plays an important role inthe field of electricity and power distribution,and various industrial occasions.This paper first studies the PWM rectifier system.On the basis of consulting a largenumber of domestic and foreign literatures,the domestic and foreign development status andresearch trends of rectifiers and their controllers have been studied in detail,and thesignificance of the research has been further understood.Next,the topology,mathematicalmodel and rectifier control technology of the three-phase voltage rectifier are analyzed.ThePWM rectifier is researched and designed with a certain platform.The control method issimulated by MATLAB simulation software.Then,the development history,application,classification,development tools,language and other contents of FPGA are introduced.Finally,the hysteresis control algorithm is divided into modules,which are divided into PIalgorithm module,limiting and command current generation module,hysteresis comparisonmodule,PWM pulse generation and dead zone protection module,AD control and datastorage module,and In the Quartus II software environment,modular design is programmedthrough the VHDL language.Practice has proved that the designed PWM rectifier and controlalgorithm are feasible.Key words:Energy,PWM Rectifier,Control Method,MATLAB