Invention Grant
- Patent Title: Device for safeguarding an uninterruptible power supply of a magnet bearing in the event of failure of an electrical supply voltage
- Patent Title (中): 用于在电源电压发生故障的情况下保护磁铁轴承的不间断电源的装置
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Application No.: US12298822Application Date: 2007-03-16
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Publication No.: US07928620B2Publication Date: 2011-04-19
- Inventor: Joachim Denk , Dietmar Stoiber , Bernd Wedel
- Applicant: Joachim Denk , Dietmar Stoiber , Bernd Wedel
- Applicant Address: DE München
- Assignee: Siemens Aktiengesellschaft
- Current Assignee: Siemens Aktiengesellschaft
- Current Assignee Address: DE München
- Agent Henry M. Feiereisen; Ursula B. Day
- Priority: DE102006019875 20060428
- International Application: PCT/EP2007/052506 WO 20070316
- International Announcement: WO2007/124983 WO 20071108
- Main IPC: H02K7/09
- IPC: H02K7/09 ; F16C32/04 ; H02J9/00 ; H02P27/06
Abstract:
The invention relates to a device for safeguarding uninterrupted power supply of a magnetic bearing (5) in the event of a power supply voltage (U) failure. Said device comprises: a first frequency converter (2) which is supplied with power by the supply voltage (U) and controls a motor (3), and a transformer (7) which is connected to a rectifier (8) and the motor (3), said rectifier (8) supplying a DC-link electric circuit (11) of a second frequency converter (14) controlling the magnetic bearing (5) with power in the event of a power supply voltage failure. The invention allows prevention of damages to the magnetic bearing in the event of disruption of power supply of the magnetic bearing in the event of a power supply voltage failure.
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