Title:
POWER CONVERSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/127464
Kind Code:
A1
Abstract:
The present invention improves current responsiveness in a light-load operation. A control device (3) controls a DC-DC converter (1) according to the current value of an input/output current (i1) of the DC-DC converter (1). The DC-DC converter (1) comprises a transformer (Tr1), a first capacitor (C1), a second capacitor (C2), a first bridge circuit (7), and a second bridge circuit (8). The first bridge circuit (7) comprises a plurality of semiconductor switching elements. The second bridge circuit (8) comprises a plurality of semiconductor switching elements. The control device (3) has, as a control mode for controlling the DC-DC converter (1), a frequency control mode for controlling a drive frequency while fixing a phase shift amount, and a phase control mode for controlling the phase shift amount while fixing the drive frequency. The control device (3) switches the control mode from the frequency control mode to the phase control mode if the drive frequency has reached a frequency limit during operation of the frequency control mode.
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Inventors:
NAKAMURA HIROKAZU
TSUKAMOTO KOHEI
ASANUMA KENICHI
MATSUI RYOJI
TSUKAMOTO KOHEI
ASANUMA KENICHI
MATSUI RYOJI
Application Number:
PCT/JP2022/045560
Publication Date:
July 06, 2023
Filing Date:
December 09, 2022
Export Citation:
Assignee:
PANASONIC HOLDINGS CORP (JP)
International Classes:
H02M3/28
Domestic Patent References:
| WO2021124408A1 | 2021-06-24 |
Foreign References:
| JP2016220347A | 2016-12-22 | |||
| JP2021100363A | 2021-07-01 |
Other References:
KONDO RYOTA, HIGAKI YUSUKE, YAMADA MASAKI: "Experimental Verification of Reducing Power Loss under Light Load Condition of a Bi-Directional Isolated DC/DC Converter for a Battery Charger-Discharger of Electric Vehicle", DENKI GAKKAI RONBUNSHI. D, SANGYO OYO BUMONSHI - TRANSACTIONS OFTHE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN. D, A PUBLICATIONOF INDUSTRY APPLICATIONS SOCIETY, DENKI GAKKAI, TOKYO,, JP, vol. 137, no. 8, 1 January 2017 (2017-01-01), JP , pages 673 - 680, XP093075288, ISSN: 0913-6339, DOI: 10.1541/ieejias.137.673
LI RUI; SHI FANGYUAN: "Control and Optimization of Residential Photovoltaic Power Generation System With High Efficiency Isolated Bidirectional DC–DC Converter", IEEE ACCESS, IEEE, USA, vol. 7, 1 January 1900 (1900-01-01), USA , pages 116107 - 116122, XP011742791, DOI: 10.1109/ACCESS.2019.2935344
LI RUI; SHI FANGYUAN: "Control and Optimization of Residential Photovoltaic Power Generation System With High Efficiency Isolated Bidirectional DC–DC Converter", IEEE ACCESS, IEEE, USA, vol. 7, 1 January 1900 (1900-01-01), USA , pages 116107 - 116122, XP011742791, DOI: 10.1109/ACCESS.2019.2935344
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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