Invention Grant
- Patent Title: Protection for permanent magnet motor control circuits
- Patent Title (中): 永磁电机控制电路保护
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Application No.: US11758974Application Date: 2007-06-06
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Publication No.: US07652858B2Publication Date: 2010-01-26
- Inventor: David Tang , Brian A Welchko , Silva Hiti , Mark L Selogie
- Applicant: David Tang , Brian A Welchko , Silva Hiti , Mark L Selogie
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations, Inc.
- Current Assignee: GM Global Technology Operations, Inc.
- Current Assignee Address: US MI Detroit
- Main IPC: H02H7/09
- IPC: H02H7/09

Abstract:
Methods and apparatus are provided for protecting a motor control circuit in a permanent magnet electric motor system. The permanent magnet electric motor system includes a permanent magnet electric motor having a predetermined number of windings corresponding to the phases of the permanent magnet electric motor and a direct current (DC) bus coupled to a power source for providing operational power for the electric motor system. A motor control circuit is connected to the DC bus for receiving the operational power therefrom and is connected to the windings of the permanent magnet electric motor for controlling the permanent magnet electric motor. A protection circuit is connected to the DC bus for receiving the voltage therefrom for operation of the protection circuit and for detecting predetermined motor control circuit fault conditions from voltage sensed on the DC bus and in response thereto providing protection for the motor control circuit.
Public/Granted literature
- US20080304189A1 PROTECTION FOR PERMANENT MAGNET MOTOR CONTROL CIRCUITS Public/Granted day:2008-12-11
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