Title:
ELECTROLYTIC CAPACITOR MODULE, FILTER CIRCUIT AND POWER CONVERTER
Document Type and Number:
WIPO Patent Application WO/2019/103021
Kind Code:
A1
Abstract:
This electrolytic capacitor module is provided with at least two electrolytic capacitors (4-1, 4-2) having etch pits formed on an electrode foil. At least two types of electrolytic capacitors (4-1, 4-2) with different etch pit lengths are connected in parallel, and the number installed thereof may be the same or different. The electrolytic capacitors (4-1, 4-2) are either electrolytic capacitors with etch pit lengths less than or equal to 27 μm, or electrolytic capacitors with etch pit lengths greater than 27 μm. By this means, performance in the high-frequency region of the electrolytic capacitor is improved, the capacity reduction rate in the high-frequency region is suppressed, and the ripple current resistance in the high-frequency region is increased.
Inventors:
YOSHIDA ATSUSHI (JP)
Application Number:
PCT/JP2018/042917
Publication Date:
May 31, 2019
Filing Date:
November 21, 2018
Export Citation:
Assignee:
NIPPON CHEMICON (JP)
International Classes:
H01G9/055; H01G4/40; H01G9/28; H02M1/14
Domestic Patent References:
| WO2017014143A1 | 2017-01-26 |
Foreign References:
| JP2004080773A | 2004-03-11 | |||
| JP2005217129A | 2005-08-11 | |||
| JP2006169571A | 2006-06-29 | |||
| JP2007115949A | 2007-05-10 | |||
| JPS5748221A | 1982-03-19 | |||
| JP2015204721A | 2015-11-16 |
Other References:
See also references of EP 3716302A4
Attorney, Agent or Firm:
UNEMOTO Shoichi et al. (JP)
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