This paper control the dc-link capacitance of single power-cell with closed loop for energy feedback and steady DC-link capacitance voltage by rebuilding the rectification of single power-cell based on the technology of three PWM rectifier.
本文采用成熟的三相四象限PWM整流技术,通过改造级联型高压变频器单个功率单元的整流部分,对直流母线电容电压进行闭环控制来稳定功率单元直流母线电容上的电压,实现能量回馈。