发明名称 |
MAGNETIC DRIVE DEVICES, AND RELATED SYSTEMS AND METHODS |
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. |
申请公布号 |
EP2820232(A4) |
申请公布日期 |
2016.03.02 |
申请号 |
EP20130754224 |
申请日期 |
2013.03.01 |
申请人 |
NATIONAL OILWELL VARCO, L.P. |
发明人 |
DAVEY, KENT R.;CARDELLINI, DAVID A.;SWIONTEK, CLIFF A. |
分类号 |
E21B23/00;H02K7/11;H02K49/10 |
主分类号 |
E21B23/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|