CAJ | 학술논문

PWM整流技术被广泛应用在各种领域,而在实际整流器设计过程中,很少考虑不平衡运行条件的影响,这里分析了故障条件下整流器的特性,通过一系列的坐标变换得到正负序d,q坐标下的电流指令,来修正电网正常条件下的控制策略.仿真和实验结果表明,该控制方法能改善整流器在故障条件下的输入电流,抑制谐波功率,提高了直流母线电压动态响应及实现单位功率因数,从而实现整流器的不间断运行能力.
PWM정류기술피엄범응용재각충영역,이재실제정류기설계과정중,흔소고필불평형운행조건적영향,저리분석료고장조건하정류기적특성,통과일계렬적좌표변환득도정부서d,q좌표하적전류지령,래수정전망정상조건하적공제책략.방진화실험결과표명,해공제방법능개선정류기재고장조건하적수입전류,억제해파공솔,제고료직류모선전압동태향응급실현단위공솔인수,종이실현정류기적불간단운행능력.
PWM rectifier technology has been widely used in various fields,while in the actual rectifier design process,with little regard for the impact of unbalanced operating conditions, the characteristics of rectifier under fault conditions are analyzed,through a series of coordinate transformation to get positive and negative sequence d,q coordinates of the current directive to fix the grid under normal conditions of the control strategy.The simulation and experimental results show that the control method can improve the rectifier input current under fault conditions, inhibit harmonic power,improved dynamic response and DC bus voltage to achieve unity power factor rectifier in order to achieve continuous operational capability.