Title :
A three phase, soft switching, transformer isolated, unity power factor front end converter
Author :
de Rooij, M.A. ; Ferreira, J.A. ; van Wyk, J.D.
Author_Institution :
Ind. Electr. Technol. Res. Group, Rand Afrikaans Univ., Johannesburg, South Africa
Abstract :
This paper investigates a three phase unity power factor rectifier that provides galvanic isolation, and a controllable DC output and represents a new technology for this field of application. For galvanic isolation the converter is based on three single phase converters, each a DC to DC partial series resonant converter, all connected in star on the input and in series on the output. The compound converter exhibits a high efficiency and features low EMI. A 3 kW three phase experimental converter is evaluated
Keywords :
DC-DC power convertors; power factor; rectifying circuits; resonant power convertors; switching circuits; 3 kW; DC to DC partial series resonant converter; controllable DC output; galvanic isolation; high efficiency; input star connection; low EMI; output series connection; single phase converters; soft switching; three phase; three phase unity power factor rectifier; transformer isolated converter; unity power factor front end converter; Analog-digital conversion; DC-DC power converters; Frequency conversion; Galvanizing; Isolation technology; Reactive power; Rectifiers; Resonance; Switching converters; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.701990
