Invention Grant
- Patent Title: Method for braking an AC motor
- Patent Title (中): 制动交流电机的方法
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Application No.: US12389935Application Date: 2009-02-20
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Publication No.: US08134316B2Publication Date: 2012-03-13
- Inventor: Richard H. Osman , Mukul Rastogi
- Applicant: Richard H. Osman , Mukul Rastogi
- Applicant Address: US GA Alpharetta
- Assignee: Siemens Industry, Inc.
- Current Assignee: Siemens Industry, Inc.
- Current Assignee Address: US GA Alpharetta
- Main IPC: H02P3/12
- IPC: H02P3/12

Abstract:
A system for braking a motor. The system includes at least one resistor and a contactor connected to the at least one resistor and a motor. The system further includes a variable frequency drive electrically connected to the motor, wherein the variable frequency drive comprises a controller operably connected to the contactor, wherein at least a portion of the contactor closes connecting the at least one resistor to the motor in response to a command from the controller. The variable frequency drive is configured such that motor flux levels may be maintained at a relatively high level as motor torque current is reduced, resulting in a consistently high motor flux level as the motor speed decreases.
Public/Granted literature
- US20090212724A1 Method for Braking an AC Motor Public/Granted day:2009-08-27
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