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Patent Searching and Data


Title:
ISOLATED TYPE ACTIVE EMI FILTER HAVING NO ADDITIONAL ELEMENTS ON POWER LINE
Document Type and Number:
WIPO Patent Application WO/2019/212258
Kind Code:
A1
Abstract:
The present invention relates to an EMI filter for preventing noise emitted from a power line cable. An isolated type active EMI filter having no elements added to a power line comprises: a common mode choke disposed on a power supply side; an Y-cap disposed on an EMI source side; a sensing coil for sensing an electric current; an amplification unit for amplifying a noise current; and a transformer for injecting a signal of a secondary coil into the Y-cap as a compensation signal.

Inventors:
KIM, Jin Gook (50 UNIST-gil, Eonyang-eup,Ulju-gun, Ulsan, 44919, KR)
JEONG, Sang Yeong (50 UNIST-gil, Eonyang-eup,Ulju-gun, Ulsan, 44919, KR)
SHIN, Dong Il (50 UNIST-gil, Eonyang-eup,Ulju-gun, Ulsan, 44919, KR)
Application Number:
KR2019/005268
Publication Date:
November 07, 2019
Filing Date:
May 02, 2019
Export Citation:
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Assignee:
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (50 UNIST-gil, Eonyang-eupUlju-gun, Ulsan, 44919, KR)
International Classes:
H02M1/44; H02J3/01; H03H1/00
Attorney, Agent or Firm:
Y.P.LEE, MOCK & PARTNERS (12F Daelim Acrotel, 13 Eonju-ro 30-gilGangnam-gu, Seoul, 06292, KR)
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