Invention Grant
- Patent Title: Electronically commutated electric motor having emergency running properties
- Patent Title (中): 具有紧急运行特性的电子换向电动机
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Application No.: US13262658Application Date: 2010-02-18
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Publication No.: US08742706B2Publication Date: 2014-06-03
- Inventor: Torsten Henke , Oliver Wackerl , Ulrich Vollmer , Dirk Lamprecht
- Applicant: Torsten Henke , Oliver Wackerl , Ulrich Vollmer , Dirk Lamprecht
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Michael Best & Friedrich LLP
- Priority: DE102009002070 20090401; DE102010001241 20100127
- International Application: PCT/EP2010/052010 WO 20100218
- International Announcement: WO2010/112262 WO 20101007
- Main IPC: H02P6/16
- IPC: H02P6/16

Abstract:
The invention relates to an electronically commutated electric motor. The electric motor comprises a stator, and a rotor, in particular a permanent-magnetic rotor. The electric motor further comprises a control unit connected to the stator. The control unit is designed to actuate the stator such that the stator can generate a magnetic rotating field for rotationally moving the rotor. According to the invention, the control unit of the electric motor is provided with a power output stage having semiconductor switches. Subject to the low-resistance, or short-circuited, semiconductor switch of the power output stage, in particular as a result of defect, the control unit is designed to actuate the stator for generating the rotating field such that during a complete rotor revolution, the rotor can provide a mechanical output, or in the operational mode, a braking torque of the electric motor caused by the defect is reduced, or completely neutralized, by the low-resistance, or short-circuited, semiconductor switch.
Public/Granted literature
- US20120086372A1 ELECTRONICALLY COMMUTATED ELECTRIC MOTOR HAVING EMERGENCY RUNNING PROPERTIES Public/Granted day:2012-04-12
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