DocumentCode :
1019949
Title :
Hexagram Rectifier—Active Front End of Hexagram Inverter for Medium-Voltage Variable-Speed Drives
Author :
Wen, Jun ; Smedley, Keyue
Author_Institution :
Southern California Edison, Rosemead, CA
Volume :
23
Issue :
6
fYear :
2008
Firstpage :
3014
Lastpage :
3024
Abstract :
Recently, a new multilevel inverter-hexagram inverter has been reported for medium-voltage (MV) variable-speed drives (VSDs). This paper will propose a hexagram rectifier as the active front end for the hexagram-based MV VSD systems. The control of the hexagram rectifier is based on one-cycle control-an excellent control scheme for switching power converters. With the proposed control scheme, unity power factor at the source side can be achieved, the six modules will equally share the output power, and the voltage stress of the converter will be reduced six times. A 1-MW simulation model and a 1.2-kW experimental prototype have been built to demonstrate the proposed hexagram rectifier and its control scheme.
Keywords :
PWM invertors; PWM power convertors; machine control; rectifying circuits; variable speed drives; hexagram inverter; hexagram rectifier; medium-voltage variable-speed drives; switching power converters; unity power factor; Multilevel systems; pulsewidth-modulated (PWM) power converters; rectifiers; variable-speed drives (VSDs);
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/TPEL.2008.2005059
Filename :
4696041
Link To Document :
بازگشت