DIAGNOSIS APPARATUS OF THE OPEN-CIRCUIT FAULT IN 3-PHASE AC/DC PWM CONVERTER AND METHOD THEREOF
摘要
PURPOSE: An open circuit malfunction diagnosing device of a three-phase AC/DC PWM(Pulse Width Modulation) convertor and a method thereof are provided to accurately detect a phase in which malfunction occurs in the operation of a system. CONSTITUTION: A current converting unit(100) converts a 3-phase current value into a 2-phase rest frame current value. A malfunction diagnosing unit(200) monitors changes of a current vector position angle. The malfunction diagnosing unit detects the malfunction of an open circuit and a phase in which the malfunction occurs. The changes of the current vector position angle are obtained from the converted 2-phase rest frame current value. [Reference numerals] (200) Malfunction diagnosing unit
申请公布号
KR20120113908(A)
申请公布日期
2012.10.16
申请号
KR20110031591
申请日期
2011.04.06
申请人
PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
发明人
KIM, JANG MOK;IM, WON SANG;LEE, DONG CHOON;LEE, KYO BEUM