Device for safeguarding an uninterruptible power supply of a...

Details Device for safeguarding an uninterruptible power supply of a... Device for safeguarding an uninterruptible power supply of a...

2011-04-19

2011-04-19

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C361S143000, C361S144000, C307S068000

Reexamination Certificate

active

07928620

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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