发明名称 |
High speed ratio permanent magnet motor |
摘要 |
A permanent magnet motor having a high speed ratio may remove the need for a gearbox or multiple windings in the permanent magnet motor. A gearbox or a multiple-winding configuration stator may thus be omitted. |
申请公布号 |
US9634599(B2) |
申请公布日期 |
2017.04.25 |
申请号 |
US201514980193 |
申请日期 |
2015.12.28 |
申请人 |
Canrig Drilling Technology Ltd. |
发明人 |
Kuttel Beat;Ellis Brian |
分类号 |
H02P27/00;H02P23/00;H02P6/08 |
主分类号 |
H02P27/00 |
代理机构 |
Adolph Locklar |
代理人 |
Adolph Locklar |
主权项 |
1. A method for operating a piece of equipment driven by rotary power comprising:
coupling a permanent magnet AC motor to a shaft of the piece of equipment, the shaft adapted to be rotated directly by the permanent magnet AC motor, the permanent magnet AC motor including a stator and a rotor, the rotor having a permanent magnet positioned thereon; supplying alternating current to the stator; rotating the shaft; injecting a direct current in the opposite direction of a magnetic flux created by the permanent magnet and weakening the magnetic field of the permanent magnet; and increasing the speed of the permanent magnet AC motor to a maximum speed based on a speed ratio of the permanent magnet AC motor, the speed ratio defined as the ratio between the maximum speed and a rated speed, the rated speed corresponding to a rated voltage of the permanent magnet AC motor. |
地址 |
Houston TX US |