CAJ | 학술논문

针对电机启动时伴随的大电流、小转矩和不平稳等问题，提出了一种电机分级变频软启动与谐波滤波一体化方法，该方法结合可变电抗技术、分级变频技术和无源谐波滤波技术，介绍了电机分级变频软启动与谐波滤波一体化的原理、拓扑架构和实现方法。在窑磨、煤磨或矿井大型提升设备拖动的电机中应用时，可使该电机在启动过程中的限流和转矩要求得到满足，并在电机软启动过程中及结束后实现动态谐波滤波，在整体上提升高压大功率电机的重载启动性能，节能降耗，保持电网电压稳定，便于工程实现。
침대전궤계동시반수적대전류、소전구화불평은등문제，제출료일충전궤분급변빈연계동여해파려파일체화방법，해방법결합가변전항기술、분급변빈기술화무원해파려파기술，개소료전궤분급변빈연계동여해파려파일체화적원리、탁복가구화실현방법。재요마、매마혹광정대형제승설비타동적전궤중응용시，가사해전궤재계동과정중적한류화전구요구득도만족，병재전궤연계동과정중급결속후실현동태해파려파，재정체상제승고압대공솔전궤적중재계동성능，절능강모，보지전망전압은정，편우공정실현。
The started motors with the discrete frequency converter are characterized by high staring torque and heavy har -monic currents when the motors draw heavy -loads.Therefore, a novel integrated method of motor discrete variable frequency starting and harmonic filtering was presented .The principle of integration of motor discrete variable frequency soft starting and harmonic filtering was analyzed;the topology of the stators was constructed; and the implementation steps were illustrated .The motor starters developed with this method were successfully applied to the loads of the drive equipment in the kiln , coal grinding mill or the mine.It can improve the starting performance when the motors draw the heavy -loads, save energy, stabilize the volt-age of the power supply network .