[fpga+pwm] design and implementation of phase shift trigger circuit for three-phase PWM rectifier based on FPGA

1. Software version

quartusii12.1

2. System Overview

        For three phases PWM The mathematical model of rectifier in three-phase static coordinate system is introduced , For later passage CPLD The realization of phase shift trigger circuit of three-phase rectifier has laid a theoretical foundation . Usually three-phase PWM The basic structure of rectifier is shown in the figure below ：

        Besides , The variables in the phase shift trigger circuit of the three-phase rectifier represent the parasitic resistance ; The variable represents the side inductance ; The variable represents the inductance ; The variable represents the parasitic resistance on the network side ; The variable represents the filter capacitance ; The variable represents the damping resistance ;S1~S6 For six switch circuits . According to the above variables , In the three-phase stationary coordinate system , According to the six switch circuits S1~S6 Different switch states of , The following calculation formula can be obtained ：