Invention Grant
US08736205B2 Switching device and method for terminating a braking process of a three-phase AC motor
有权
用于终止三相交流电动机的制动过程的开关装置和方法
- Patent Title: Switching device and method for terminating a braking process of a three-phase AC motor
- Patent Title (中): 用于终止三相交流电动机的制动过程的开关装置和方法
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Application No.: US13885175Application Date: 2010-11-17
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Publication No.: US08736205B2Publication Date: 2014-05-27
- Inventor: Dirk Hertz , Johann Seitz , Stefan Zitzler
- Applicant: Dirk Hertz , Johann Seitz , Stefan Zitzler
- Applicant Address: DE Munich
- Assignee: Siemens Aktiengesellschaft
- Current Assignee: Siemens Aktiengesellschaft
- Current Assignee Address: DE Munich
- Agency: Harness, Dickey & Pierce, P.L.C.
- International Application: PCT/EP2010/067660 WO 20101117
- International Announcement: WO2012/065637 WO 20120524
- Main IPC: H02P3/22
- IPC: H02P3/22

Abstract:
A switching device and method are disclosed for terminating a braking process of a three-phase AC motor. The braking process of the AC motor is performed by way of a first and second thyristor. During the braking process of the AC motor, in a first step the first thyristor is actuated in such a way that a braking current is fed to the AC motor, and therefore a torque which brakes the AC motor is produced. In a second step the second thyristor is actuated in such a way that, when the first thyristor is quenched, the braking current is taken on by the second thyristor and the braking torque is maintained. The two steps are repeated during the braking process; wherein the second step is suppressed during the braking process after a last actuation of the first thyristor.
Public/Granted literature
- US20130241450A1 SWITCHING DEVICE AND METHOD FOR TERMINATING A BRAKING PROCESS OF A THREE-PHASE AC MOTOR Public/Granted day:2013-09-19
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