Design of a novel filter topology with active impedance regulator for three-phase motor drive system

Author

Wenjie Chen ; Xu Yang

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´an Jiaotong Univ., Xi´an, China

fYear

2014

fDate

16-20 March 2014

Firstpage

2425

Lastpage

2429

Abstract

This paper presents a novel hybrid output filter topology for inverter-motor system. It is composed of a conventional LC filter cascaded with an active motor CM impedance regulator. The active circuit, utilizing an integrated high-voltage op-amp, is very efficient in decreasing the motor CM equivalent capacitance as well as damping the high common voltage on the motor terminal. Therefore, the motor impedance is also used as part of the filter and the common voltage can be eliminated dynamically in the active impedance regulator by feedback control. Experimental verification of the filter topology is provided with a laboratory system consisting of a 380 V inverter and a 0.37kW induction motor.

Keywords

active filters; capacitance; damping; electric impedance; feedback; induction motor drives; invertors; operational amplifiers; LC filter; active circuit; active motor CM impedance regulator; feedback control; hybrid output filter topology; induction motor; integrated high-voltage op-amp; inverter-motor system; motor CM equivalent capacitance; three-phase motor drive system; Equations; Impedance; Induction motors; Inverters; Passive filters; Regulators;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE

Conference_Location

Fort Worth, TX

Type

conf

DOI

10.1109/APEC.2014.6803643

Filename

6803643