Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A Novel Circuit Configuration of UPS with Auxiliary Inverter and Its Specific Control Implementations

  • Hirachi, Katsuya (Research and Development Division, Power Supply Division Company, Yuasa Co.) ;
  • Nakaoka, Mutsuo (Dept. of Electrical and Electronics Engineering, Yamaguchi University)
  • Published : 2003.10.01
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Abstract

The rapid expansion of small computers over the last 10-odd years has brought about great changes in the circumstances affecting UPSs. There are strong demands that UPSs become much smaller and lighter, and more economical, which has resulted in the wide application of the circuit topology without transformer. A disadvantage of such UPS topology is that the DC link voltage is very high, which invites decreased reliability and increased cost of battery bank. Some circuit configurations were proposed to eliminate this disadvantage, but they still had problems. In this paper, a novel circuit configuration which eliminates these problems is proposed and evaluated by the experimental results of prototype UPS.

Keywords

References

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