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|1. (WO2018159026) POWER SUPPLY CONTROL DEVICE, POWER CONVERSION SYSTEM, AND POWER SUPPLY CONTROL METHOD|
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
|Title:||POWER SUPPLY CONTROL DEVICE, POWER CONVERSION SYSTEM, AND POWER SUPPLY CONTROL METHOD|
[Problem] To provide a power supply control device, a power conversion system, and a power supply control method that enable a power conversion device that performs AC-AC conversion on the output of a multi-phase alternating-current power supply to be controlled, the phase of an output current to be optimized, the power efficiency on the output side to be increased, and the output transmission efficiency to be improved by using a power conversion device equipped with a resonant circuit on an output side of a matrix converter that employs a switch circuit having a snubber element. [Solution] Provided is a power supply control device that performs control: such that an output current, in which a phase difference is generated by a resonant circuit, is negative in a period in which the absolute value of an output voltage, in a positive direction, output from a power conversion device is increasing; such that the output current is positive in a period in which the output voltage in the negative direction is increasing; and such that no change in the polarity of the output current occurs in a period in which a snubber element discharges.