CAJ | 학술논문

基于单相三电平中点箝位（Neutral Point Clamped,NPC）PWM整流器的工作原理,将dq坐标系引入单相整流器,给出了dq坐标系的整流器数学模型。提出了一种电流解耦控制策略,对解耦后的d、q轴电流分别进行比例控制,极大地降低了控制系统设计的复杂性,并具有良好的线性控制特性。计算机仿真和实验结果表明,基于电流解耦控制的PWM整流器功率因数高、动态性能好,验证了该策略是正确可行的。
기우단상삼전평중점겸위（Neutral Point Clamped,NPC）PWM정류기적공작원리,장dq좌표계인입단상정류기,급출료dq좌표계적정류기수학모형。제출료일충전류해우공제책략,대해우후적d、q축전류분별진행비례공제,겁대지강저료공제계통설계적복잡성,병구유량호적선성공제특성。계산궤방진화실험결과표명,기우전류해우공제적PWM정류기공솔인수고、동태성능호,험증료해책략시정학가행적。
Working principle of single phase three-level neutral-point-clamped（NPC） PWM rectifier is discussed and a mathematic model of the PWM rectifier on the dq reference frame is set up.This paper introduces a current decoupled control strategy that decline significantly complexity of the control system.Computer simulation and experiment results demonstrate that this rectifier under current decoupled control has higher power factor and better dynamic performance,which confirms the effectiveness of the control strategy.