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Patent Searching and Data


Title:
POWER CONVERSION DEVICE AND METHOD FOR CONTROLLING POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/085731
Kind Code:
A1
Abstract:
A power conversion device according to an embodiment of the present invention comprises: a voltage adjusting circuit that adjusts the voltage from a power supply to a desired voltage; an inverter that converts power output from the voltage adjusting circuit to AC power; a resonance circuit that has inductance and capacitance; a high frequency transformer that converts the AC power of the inverter; a rectifier that converts the AC power output from the high frequency transformer to DC power; a temperature detection unit that detects the temperature of the resonance circuit; and a control unit that detects an abnormality in a resonance frequency if the temperature is greater than or equal to a prescribed temperature threshold, and implements control when abnormal. Therefore, the power conversion device can easily and inexpensively detect an abnormality in the resonance frequency.

Inventors:
FUJITA TSUNEHITO (JP)
BABA TOSHIYUKI (JP)
NOZAKI YUICHIRO (JP)
SUZUKI HIROOMI (JP)
Application Number:
PCT/JP2021/038799
Publication Date:
April 28, 2022
Filing Date:
October 20, 2021
Export Citation:
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Assignee:
TOSHIBA KK (JP)
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
H02M3/28
Foreign References:
JP2016019322A2016-02-01
JP2017060302A2017-03-23
JP2003079144A2003-03-14
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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