公开(公告)号：US20040075414A1

公开(公告)日：2004-04-22

申请号：US10414400

申请日：2003-04-16

Applicant: LG ELECTRONICS INC.

Inventor： Jae-Choon Lee

IPC: H02P001/26

CPC classification number: H02M5/458 ,  H02M2001/007 ,  H02P29/50 ,  H02P2201/11

Abstract: A driving apparatus of a three-phase induction motor includes: a three-phase power supply unit for supplying three-phase power; a rectifier for rectifying the three phase voltage supplied from the three phase power supply unit; a voltage reducing unit for reducing a DC voltage generated from the rectifier and outputting a stabilized DC voltage; and an inverter unit for varying the DC voltage outputted from the voltage reducing unit to a three-phase AC voltage and driving a three-phase induction motor. A power-factor degradation generated during supplying a DC voltage to the inverter to drive the three-phase induction motor is prevented, a harmonic wave is removed, and because a high-priced inverter component is not necessary, its relevant expense is reduced.

Abstract translation: 三相感应电动机的驱动装置包括：三相电源单元，用于提供三相电力; 用于整流从三相电源单元提供的三相电压的整流器; 电压降低单元，用于降低从整流器产生的DC电压并输出稳定的DC电压; 以及逆变器单元，用于将从电压降低单元输出的DC电压改变为三相AC电压并驱动三相感应电动机。 防止向逆变器提供DC电压而产生的驱动三相感应电动机所产生的功率因数降低，除去了谐波，并且由于不需要高价格的逆变器部件，因此降低了其相关费用。