| 摘要 |
PROBLEM TO BE SOLVED: To provide a synchronous power supply device where occurrence of transient current based on power supply is suppressed much more and influence to a system can be reduced by making a voltage difference of both systems at the time of supply to be very small. SOLUTION: The device includes a lapse time predicting means 13 calculating voltage valid values, frequencies and absolute phase angles of buses A and B and predicting lapse time until phases of voltages of the buses A and B are matched from reference time and a supply time calculating means 14 for calculating supply time of synchronous power supply based on a prediction value of lapse time and outputting a synchronous power supply operation signal. COPYRIGHT: (C)2007,JPO&INPIT
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