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Patent Searching and Data


Title:
EMERGENCY INVERTER OPERATION DEVICE FOR ELECTRIC VEHICLE AND METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2014/168303
Kind Code:
A1
Abstract:
The present invention provides an emergency inverter operation device for an electric vehicle which can compensate for the imbalance of a 3-phase current caused by an unbalanced voltage of a direct current link terminal, and produce a new reference voltage obtained by adding a correction voltage to compensate for the variation of the direct current link terminal, and a method therefor. An emergency inverter operation device according to the present invention includes: a serially connected upper and lower terminal direct voltage link; a 3-phase inverter for converting a direct link voltage applied to the upper and lower terminal direct voltage link into a 3-phase alternating voltage; a 3-phase motor driven by the 3-phase alternating voltage outputted from the 3-phase inverter; an emergency connection part for connecting each phase input terminal of the 3-phase motor to the middle point of the upper and lower terminal direct voltage link; a voltage detection part for detecting the voltage of the upper and lower terminal direct voltage link; an imbalance compensation part for receiving the output of the voltage detection part, the 3-phase reference voltage, and the direct link reference voltage so as to produce a phase voltage deviation compensated reference value obtained by compensating for a phase voltage deviation; and a pulse-width modulation control part for producing a pulse-width modulation control signal by means of the phase voltage deviation compensated reference value.

Inventors:
HONG, Chan Hee (3 Mido Apt, Banpo 4-dongSeocho-gu, Seoul 137-769, 137-769, KR)
LEE, Dong Myung (1404-702, Hoban Vertium Apt. Yeongdeo-dong,Giheung-gu, Yongin-si, Gyeonggi-do 446-908, 446-908, KR)
Application Number:
KR2013/009191
Publication Date:
October 16, 2014
Filing Date:
October 15, 2013
Export Citation:
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Assignee:
VCTECH CO., LTD. (246-2, DangjeongDongGunpoShi, Gyeonggi-do 435-831, 435-831, KR)
International Classes:
H02M1/32; B60L11/18; B60L15/20; H02M7/48
Foreign References:
JP2004120883A2004-04-15
KR20020058841A2002-07-12
EP2493064A12012-08-29
US6670785B12003-12-30
JP2010136502A2010-06-17
Attorney, Agent or Firm:
INNO PATENT & LAW FIRM (8F Shin Hankook Bldg. 164, Seochojungang-roSeocho-gu, Seoul 137-883, 137-883, KR)
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