A three-phase soft-switched high-power-density dc/dc converter for high power applications

Journal Article · Tue Jan 01 00:00:00 EST 1991 · IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/28.67533· OSTI ID:5281001

DeDoncker, R W.A.A. ^[1]; Divan, D M; Kheraluwala, M H ^[2]

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1. Power Controls Lab., General Electric Corporate R and D, Schenectady, NY (US)
2. Dept. of Electrical and Computer Engineering, Univ. of Wisconsin, Madison, WI (US)

In this paper three dc/dc converter topologies suitable for high-power-density high-power applications are presented. All three circuits operate in a soft-switched manner, making possible a reduction in device switching losses and an increase in switching frequency. The three-phase dual-bridge converter proposed is seen to have the most favorable characteristics. This converter consists of two three-phase inverter stages operating in a high-frequency six-step mode. In contrast to existing single-phase ac-link dc/dc converters, lower turn-off peak currents in the power devices and lower rms current ratings for both the input and output filter capacitors are obtained. This is in addition to smaller filter element values due to the higher-frequency content of the input and output waveforms. Furthermore, the use of a three phase symmetrical transformer instead of single-phase transformers and a better utilization of the available apparent power of the transformer (as a consequence of the controlled output inverter) significantly increase the power density attainable.

• OSTI ID: 5281001
• Journal Information: IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States), Vol. 27:1; ISSN 0093-9994
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
DC TO DC CONVERTERS
DESIGN
POWER SYSTEMS
CONTROL SYSTEMS
ELECTRIC POWER
HIGH-FREQUENCY DISCHARGES
OPERATION
PLANNING
SWITCHING CIRCUITS
TRANSFORMERS
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
EQUIPMENT
POWER
240202* - Power System Networks
Transmission & Distribution- DC Systems- (1990-)
240100 - Power Systems- (1990-)