Invention Grant
US09054615B2 Method and apparatus for control of a synchronous permanent magnet motor, particularly over a long cable in a well
有权
用于控制同步永磁电动机的方法和装置，特别是在井中的长电缆上
- Patent Title: Method and apparatus for control of a synchronous permanent magnet motor, particularly over a long cable in a well
- Patent Title (中): 用于控制同步永磁电动机的方法和装置，特别是在井中的长电缆上
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Application No.: US13811418Application Date: 2011-07-22
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Publication No.: US09054615B2Publication Date: 2015-06-09
- Inventor: Philip Head , Hassan Mansir
- Applicant: Philip Head , Hassan Mansir
- Applicant Address: GB Knyvett House Watermans Business Park, The Causeway, Staines, Surrey
- Assignee: AccessESP UK Limited
- Current Assignee: AccessESP UK Limited
- Current Assignee Address: GB Knyvett House Watermans Business Park, The Causeway, Staines, Surrey
- Agency: Greenberg Traurig LLP
- Priority: GB1012321.4 20100722
- International Application: PCT/GB2011/051402 WO 20110722
- International Announcement: WO2012/010908 WO 20120126
- Main IPC: H02P6/00
- IPC: H02P6/00 ; H02P6/20 ; H02P23/00 ; H02P25/02 ; H02P27/04 ; H02P1/52
Abstract:
A synchronous permanent magnet motor is controlled independently of position sensing means by determining the system parameters including the motor impedance and back-emf and the cable impedance and supplying power according to a predefined voltage:frequency ratio which is determined based on said system parameters to provide a desired rate of acceleration determined by the supply voltage.
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