Multilevel boost rectifiers as a unity power factor supply for power electronics drive and for battery charger

Author

Koczara, W. ; Bialoskorski, P.

Author_Institution

Inst. of Control & Ind. Electron., Warsaw Univ. of Technol., Poland

fYear

1993

fDate

6/15/1905 12:00:00 AM

Firstpage

477

Lastpage

481

Abstract

Single and three phase boost rectifiers operate with unity power factor and low switching frequency when a multilevel controller is used. A novel structure for multilevel control is proposed. Single phase systems operate mainly as a force commutated rectifier however line commutation is very useful especially for zero crossing supply voltage because, during overlapping, current rate is high and harmonics are reduced. In a three phase system the multilevel control is achieved by using 9 active switches. A method based on a comparison reference and available current rates or comparison voltage drops on supply side inductances is proposed to evaluate the rectifier controllability. Results of simulation and laboratory tests confirm a unity power factor.

Keywords

battery chargers; commutation; control system synthesis; power convertors; power factor; power supplies to apparatus; rectifiers; switching circuits; voltage control; active switches; battery charger; boost rectifiers; control system synthesis; force commutated; line commutation; multilevel control; power electronics; power supply; switching frequency; unity power factor; voltage control; Batteries; Control systems; Controllability; Power electronics; Power supplies; Reactive power; Rectifiers; Switches; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 1993. Conference Proceedings, ISIE'93 - Budapest., IEEE International Symposium on

Conference_Location

Budapest, Hungary

Print_ISBN

0-7803-1227-9

Type

conf

DOI

10.1109/ISIE.1993.268759

Filename

268759