浅析低压变频器的选型与主要问题 摘要：低压变频器，是指电压等级低于 690v的可调输出频率交 流电机驱动装置。随着计算机技术和电力电子技术的发展，低压变 频器的应用也得到了快速发展。 关键词：低压变频器；工作原理；选型；问题 abstract: the low voltage inverter refers to the adjustable output frequency ac motor drives which the voltage level of less than 690 v. with the development of computer technology and power electronics technology, low-voltage inverter application has also been rapid developed.key w