Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/170978
Kind Code:
A1
Abstract:
A power conversion device according to the present invention comprises a DC/DC converter and a control circuit unit which controls the same. The DC/DC converter has: a first power output circuit that converts first DC power into first AC power; an insulation transformer that converts the first AC power into second AC power; and one or a plurality of second power output circuits that respectively convert the second AC power into second DC power. The control circuit unit has a resonance characteristic computation unit that computes resonance characteristics of the second power output circuits on the basis of a load to which the second power output circuits each output the second DC power, and determines the drive frequency of the first power output circuit on the basis of output requirement values by the second power output circuits and the computed resonance characteristics.
Inventors:
MIYAZAKI HIDEKI (JP)
OKAMOTO TAKASHI (JP)
INNAMI TOSHIYUKI (JP)
OKAMOTO TAKASHI (JP)
INNAMI TOSHIYUKI (JP)
Application Number:
PCT/JP2022/011130
Publication Date:
September 14, 2023
Filing Date:
March 11, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02M3/28
Foreign References:
| JP2006254613A | 2006-09-21 | |||
| JP2006141149A | 2006-06-01 | |||
| JP2005312284A | 2005-11-04 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
Download PDF: