CAJ | 학술논문

提出了三相电流型PWM整流器的一种新型实用的功率因数控制方法.该功率因数控制只需要检测电源电压和电源电流的相角,因此控制系统对系统参数不敏感.不同于传统的控制方法,将电源电压与电源电流的相角差通过PI调节器直接控制调制函数的相角;同时将直流侧电流误差通过另一个PI调节器直接控制调制函数的调制比,因此使得整个控制系统更加直观简单.更为重要的是,该功率因数控制算法能够使系统自动运行在其可以达到的最大功率因数点.该控制方法的有效性和可行性首先通过仿真进行了验证,并进一步在一个5 kV·A的试验样机上进行了验证.
제출료삼상전류형PWM정류기적일충신형실용적공솔인수공제방법.해공솔인수공제지수요검측전원전압화전원전류적상각,인차공제계통대계통삼수불민감.불동우전통적공제방법,장전원전압여전원전류적상각차통과PI조절기직접공제조제함수적상각;동시장직류측전류오차통과령일개PI조절기직접공제조제함수적조제비,인차사득정개공제계통경가직관간단.경위중요적시,해공솔인수공제산법능구사계통자동운행재기가이체도적최대공솔인수점.해공제방법적유효성화가행성수선통과방진진행료험증,병진일보재일개5 kV·A적시험양궤상진행료험증.
A new and practical power factor control strategy for three phase PWM current source rectifier was proposed. This power factor control technique only needs the phase angles of the source voltage and the source current, so the control system is parameter insensitive. Different from the conventional control method, the phase angle of the modulation function is directly gotten from phase angles error between the source voltage and the source current through a PI regulator, while the modulation ratio of it is directly obtained from the DC side current error through another PI regulator, which makes the whole control system more straightforward and simple. What's more, the proposed power factor compensation scheme can provide maximum achievable power factor under all operating conditions. All these analyses and the effectiveness of the control method are firstly validated by simulation results,and are verified further in a 5kV·A laboratory prototype.