Title:
SNUBBER CIRCUIT AND POWER CONVERSION SYSTEM USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/110440
Kind Code:
A1
Abstract:
A snubber circuit capable of suppressing loss, and a power conversion system using the same are provided. When the magnitude of the voltage between a pair of first voltage points (P11, P12) in a main circuit exceeds a first clamp value, a first clamping circuit (31) absorbs the electrical energy of the main circuit from the pair of first voltage points (P11, P12) to thereby clamp the voltage at the first clamp value. When the magnitude of the voltage between a pair of second voltage points (P21, P22) in a main circuit (2) is less than a second clamp value, a second clamping circuit (32) injects electrical energy to the main circuit (2) from the pair of second voltage points (P21, P22) to thereby clamp the voltage at the second clamp value. A voltage conversion circuit (33) converts the voltage between a first clamp voltage (Vc1) that defines the first clamp value and a second clamp voltage (Vc2) that defines the second clamp value.
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Inventors:
HIGASHIYAMA KOJI
KUSAMA FUMITO
KUSAMA FUMITO
Application Number:
PCT/JP2017/044107
Publication Date:
June 21, 2018
Filing Date:
December 08, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02M1/34; H02M3/155; H02M3/28; H02M7/48; H02M7/5387
Domestic Patent References:
| WO2007122849A1 | 2007-11-01 | |||
| WO2013076752A1 | 2013-05-30 |
Foreign References:
| US7023186B2 | 2006-04-04 | |||
| JP2014079144A | 2014-05-01 | |||
| US20070236187A1 | 2007-10-11 | |||
| JP2013128373A | 2013-06-27 | |||
| JP2013158064A | 2013-08-15 |
Other References:
See also references of EP 3553928A4
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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