Electric power conversion systems – Current conversion – Having plural converters for single conversion
Patent
1994-12-27
1998-06-16
Berhane, Adolf
Electric power conversion systems
Current conversion
Having plural converters for single conversion
363 78, 307 82, H02M 7155
Patent
active
057681171
ABSTRACT:
The invention relates to a power supply system having plural converters connected in parallel. The current of each of the plural converters is detected and each of the converters is controlled so as to match each of the converters to a maximum current value from among the detected current values. In the parallel converters, when one or more converter fails, having an output current of zero, the remaining converters are each partially charged equally to maintain the load current. Since a common bus is arranged between plural converters and plural loads, it is possible to carry out a redundant operation having a high reliability. Since a stable output can be obtained without being affected by the failed converter, a power supply system having the redundancy and the high reliability can be attained.
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Technical Report: IEICE (the Institute of Electronics, Information and Communication Engineers) PE 92-47, "Control Scheme for Parallel Operation Control of DC/DC Converters", pp. 23-29 (1992/11).
Hayashi Katsunori
Horie Hideaki
Kanouda Akihiko
Onda Kenichi
Sato Masayoshi
Berhane Adolf
Hitachi , Ltd.
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