The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2011
Filed:
Mar. 16, 2007
Joachim Denk, Nürnberg, DE;
Dietmar Stoiber, Fürth, DE;
Bernd Wedel, Möhrendorf, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
The invention relates to a device for safeguarding uninterrupted power supply of a magnetic bearing () in the event of a power supply voltage (U) failure. Said device comprises: a first frequency converter () which is supplied with power by the supply voltage (U) and controls a motor (), and a transformer () which is connected to a rectifier () and the motor (), said rectifier () supplying a DC-link electric circuit () of a second frequency converter () controlling the magnetic bearing () 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.