发明名称 System for detecting incorrect phase rotation
摘要 A system for automatically detecting whether a power converter or inverter is correctly connected to a three-phase AC power source consisting of first, second, and third phases, the system comprising: a zero-crossing comparator (1) for determining whether the phase of the first-phase voltage (current) is in a positive half cycle or a negative half cycle and generating a first discrimination signal (CU); a zero-crossing comparator (2, 3) for determining whether the phase of the second- or third-phase voltages (current) is in a positive half cycle or a negative half cycle and generating a second discrimination signal (CV or CW); and a D-type flip-flop (5) which detects, in response to the first discrimination signal, that the second discrimination signal is in a predetermined half cycle.
申请公布号 US5680040(A) 申请公布日期 1997.10.21
申请号 US19960598114 申请日期 1996.02.07
申请人 MITSUBISHI DENKI KABUSHIKI KAISHA 发明人 KAWAI, JYOJI;YAMAMOTO, YUUSHIN
分类号 G01R29/18;H02M1/084;(IPC1-7):G01R25/00 主分类号 G01R29/18
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