Title:
DC-DC CONVERTER
Document Type and Number:
WIPO Patent Application WO/2020/129122
Kind Code:
A1
Abstract:
Provided is a DC-DC converter which, when multiple converter units are operated in parallel, eliminates fluctuations in the output voltage, eliminates imbalances among the output currents of the converter units, and eliminates pulsations in the output voltage and output current. Specifically provided is a DC-DC converter in which current resonant converter units 100, 200 are connected in parallel, and a control device comprising a control circuit 41, 42, a gate pulse generation circuit 51, 52, etc., is provided for each converter unit 100, 200. As a common switching frequency, the control circuits 41, 42 share the lowest of the switching frequencies corresponding to output voltages that are the same in terms of a characteristic indicating the relationship between the switching frequency and the output voltage of the converter units 100, 200, and the converter units 100, 200 are operated using a drive pulse which has the common switching frequency.
Inventors:
GEKINOZU MASAKAZU (JP)
Application Number:
PCT/JP2018/046338
Publication Date:
June 25, 2020
Filing Date:
December 17, 2018
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
H02J1/10; H02M3/155; H02M3/28
Foreign References:
| JP2016167905A | 2016-09-15 | |||
| JPH11285249A | 1999-10-15 | |||
| JP2018019578A | 2018-02-01 | |||
| JP2001008452A | 2001-01-12 | |||
| JP2014014232A | 2014-01-23 | |||
| JP2001078449A | 2001-03-23 |
Attorney, Agent or Firm:
MORITA YUICHI (JP)
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