Patent ID: 9643499
Date: 2017-05-09
CPC Classifications: B60L,H02J,Y02T

Claim:
1. An electric power system, comprising: a plurality of combinations of one of electric loads, which transmit/receive electric power, and one of power converters which is connected to the one of the electric loads and performs power conversion operation according to a predetermined switching synchronization signal so that electric power is transmitted/received to/from the electric load, the combinations being connected to a predetermined intermediate point so as to be parallel to each other and the power converters including: a power conversion control unit which controls operations of the power converters, wherein the power conversion control unit variably sets switching phases of the power converters depending on operating conditions of the power converters; the power conversion control unit sets the switching phase of each of the power converters so that the power conversion control unit sets the switching phase of a pair of two of the first power converter, the second power converter, and the third power converter so as to be mutually in antiphase, the pair having the same power input/output direction with respect to the intermediate point; and the power conversion control unit sets the switching phase of the power converter different from the pair and whichever of the converts in the pair having a larger absolute value in the input/output power so as to be in equiphase so that power fluctuation at the intermediate point is suppressed.