A specified pulse width modulation for restraining circulating current in Energy Feedback Device

Author

Xiao-jiang Huang ; Lei Dong ; Xiao-zhong Liao

Author_Institution

Sch. of Autom., Beijing Inst. of Technol., Beijing, China

fYear

2014

fDate

Aug. 31 2014-Sept. 3 2014

Firstpage

1

Lastpage

7

Abstract

Connecting the universal inverter driver (or variable-frequency inverter) with Energy Feedback Device (EFD) is an economical method to realize the four-quadrant operation of induction motor. However, the fixed switching frequency PWM adopted for the sinusoidal current control may lead to large circulating current. In this paper, the generation mechanism and the potential path of the circulating current are analyzed. Dual carried wave harmonic injection PWM (DI-PWM) is proposed to reduce the circulating current in EFDS without the addition of current sensors. The effectiveness is verified with simulation results.

Keywords

PWM invertors; electric current control; induction motors; DI-PWM; circulating current; dual carried wave harmonic injection PWM; energy feedback device; fixed switching frequency; four-quadrant operation; induction motor; pulse width modulation; sinusoidal current control; universal inverter driver; variable-frequency inverter; Inverters; Rectifiers; Space vector pulse width modulation; Switches; Vectors; Circulating current; Energy Feedback Device; dual carrier wave harmonic injection PWM;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo

Conference_Location

Beijing

Print_ISBN

978-1-4799-4240-4

Type

conf

DOI

10.1109/ITEC-AP.2014.6941022

Filename

6941022