Invention Grant
- Patent Title: Electric motor control apparatus
- Patent Title (中): 电动机控制装置
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Application No.: US12520995Application Date: 2007-04-16
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Publication No.: US08232752B2Publication Date: 2012-07-31
- Inventor: Isao Kezobo , Masahiro Kimata , Takayuki Kifuku , Kazumichi Tsutsumi , Chiaki Fujimoto , Noriyuki Inoue
- Applicant: Isao Kezobo , Masahiro Kimata , Takayuki Kifuku , Kazumichi Tsutsumi , Chiaki Fujimoto , Noriyuki Inoue
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- International Application: PCT/JP2007/058278 WO 20070416
- International Announcement: WO2008/129658 WO 20081030
- Main IPC: H02P6/06
- IPC: H02P6/06

Abstract:
An electric motor control apparatus that can quickly and accurately locate a short-circuit fault point. The electric motor control apparatus includes: a current controller determining respective phase voltage commands according to currents flowing in respective phases of an electric motor and a torque current command; a switching element drive circuit instructing, based on the respective phase voltage commands, an inverter to perform a switching operation; the inverter receiving a switching operation signal to drive the electric motor; current detectors disposed in series with the switching elements in the respective phases of the inverter; and a short-circuit point locating mechanism storing a test pattern indicative of a predetermined combination for turning on the switching elements of the inverter, and locating a short-circuit fault point based on the test pattern and current detection values in the respective phases detected by the current detectors in response to the test pattern.
Public/Granted literature
- US20100060222A1 ELECTRIC MOTOR CONTROL APPARATUS Public/Granted day:2010-03-11
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