Title :
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
fDate :
Aug. 31 2014-Sept. 3 2014
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;
Conference_Titel :
Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-4240-4
DOI :
10.1109/ITEC-AP.2014.6941022
