Research of 3-Phase Reversible Rectifier Based on Current Hysteresis Regulator

According to the control requirement and actual project condition of three-phase high power factor rectifier, for the sake of eliminating inconstant switching frequency in the converter that brought on rather serious power supply harmonic pollution and shock damage of power devices and reducing difficulty of filter circuit design, based on these problems the constant switching frequency control algorithm adopting current hysteresis regulator was put forward. It combines their respective advance of current hysteresis control and constant switching frequency strategy, enhanced the system´s dynamic response and well robust character, and minimized its switching loss. In terms of simulation results analysis, and construction of an experimental prototype based on DSP TMS320F2812, both of them verified the validity and superiority of the proposed algorithm.