Invention Grant
- Patent Title: Protection circuit for a drive circuit of a permanent magnet motor and corresponding system
- Patent Title (中): 永磁电动机驱动电路及相应系统的保护电路
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Application No.: US13020481Application Date: 2011-02-03
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Publication No.: US08598835B2Publication Date: 2013-12-03
- Inventor: Thord Agne Gustap Nilson , Miroslaw Hrywniak
- Applicant: Thord Agne Gustap Nilson , Miroslaw Hrywniak
- Applicant Address: SE Stockholm
- Assignee: Kollmorgen AB
- Current Assignee: Kollmorgen AB
- Current Assignee Address: SE Stockholm
- Agency: Holland & Hart LLP
- Agent Bryan G. Pratt
- Priority: EP10152613 20100204
- Main IPC: H02P1/46
- IPC: H02P1/46 ; H02P1/50 ; H02P3/18 ; H02P6/00
Abstract:
It is presented a protection circuit for a drive circuit of a permanent magnet motor being powered by a main DC source. The protection circuit comprises a protection circuit DC source; a changeover switch being arranged to select an input to a gate of a main drive switch of the drive circuit, the input being selectable between an output of the protection circuit DC source and a second control signal; and a changeover control device connected to control the changeover switch, which changeover control device is arranged to ensure that the changeover switch is connected to the output of the second side of the protection circuit DC source when an overvoltage is detected.
Public/Granted literature
- US20110188158A1 PROTECTION CIRCUIT FOR A DRIVE CIRCUIT OF A PERMANENT MAGNET MOTOR AND CORRESPONDING SYSTEM Public/Granted day:2011-08-04
Information query
