Invention Grant
US07652443B2 Method and system for controlling a power inverter in electric drives
有权
用于控制电力变频器中的电力变换器的方法和系统
- Patent Title: Method and system for controlling a power inverter in electric drives
- Patent Title (中): 用于控制电力变频器中的电力变换器的方法和系统
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Application No.: US11923270Application Date: 2007-10-24
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Publication No.: US07652443B2Publication Date: 2010-01-26
- Inventor: Steven E. Schulz , Stephen T. West , Brian A. Welchko , Silva Hiti
- Applicant: Steven E. Schulz , Stephen T. West , Brian A. Welchko , Silva Hiti
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations, Inc.
- Current Assignee: GM Global Technology Operations, Inc.
- Current Assignee Address: US MI Detroit
- Agency: Ingrassia Fisher & Lorenz, P.C.
- Main IPC: H02P7/00
- IPC: H02P7/00

Abstract:
Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. The various embodiments control the power inverter by, responsive to a commanded torque of the electric motor being below a first torque level, controlling the power inverter to set a switching frequency of the power inverter at a first set frequency; and, responsive to the commanded torque of the electric motor being between the first torque level and a second torque level, controlling the power inverter to determine the switching frequency of the power inverter as a function of the commanded torque of the electric motor while maintaining the switching frequency above a dynamic frequency limit. The method reduces switching frequencies in the inverter at high commanded torques, while maintaining the switching frequencies above dynamic frequency limit that provides effective control over the motor.
Public/Granted literature
- US20090108780A1 METHOD AND SYSTEM FOR CONTROLLING A POWER INVERTER IN ELECTRIC DRIVES Public/Granted day:2009-04-30
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