发明公开
- 专利标题： MAGNETIC DRIVE DEVICES, AND RELATED SYSTEMS AND METHODS
- 专利标题（中）： 磁力驱动装置及相关的系统和方法
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申请号： EP13754224申请日： 2013-03-01
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公开(公告)号： EP2820232A4公开(公告)日： 2016-03-02
- 发明人: DAVEY KENT R , CARDELLINI DAVID A , SWIONTEK CLIFF A
- 申请人： NAT OILWELL VARCO LP
- 专利权人： NAT OILWELL VARCO LP
- 当前专利权人： NAT OILWELL VARCO LP
- 优先权： US201261606305 2012-03-02; US201261653353 2012-05-30; US201261697173 2012-09-05
- 主分类号： E21B23/00
- IPC分类号： E21B23/00 ; H02K7/11 ; H02K49/10
摘要：
A magnetic drive device may comprise a stator comprising a plurality of windings for generating a first number of magnetic pole pairs and a rotor comprising a plurality of permanent magnets for generating a second number of magnetic pole pairs that differs from the first number of magnetic pole pairs. The magnetic drive device may further comprise a plurality of free-spinning interpole elements disposed within an air gap between the stator and the rotor. The interpole elements may produce a magnetomotive force and harmonically couple the magnetic pole pairs of the stator with the magnet pole pairs of the rotor.
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