摘要
介绍一种用中功率IGBT低压变频器调节大功率风机和泵用中压电机转速的方法——转子变频调速。采用该调速法的变频器主电路简单、无电抗器、运行功率因数高、谐波小、起动和旁路容易。
This paper introduces a novel VVVF method, i.e. rotor side frequency-variable drive, which can be used to regulate the rotating velocity of high power fan and medium-voltage motor for pumpe by using a medium power low voltage IGBT inverter. In the new method, the stator winding is directly connected to 6 kV or 10 kV network and the inverter is removed from stator side to rotor side. The new method is featured by simple main circuit, reactance-less, high power factor and low harmonics, easy to start and by-pass operation.
出处
《电力电子技术》
CSCD
北大核心
2004年第3期3-5,共3页
Power Electronics
