| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearingless motor and a bearingless motor control system wherein the magnetic field of a permanent magnet of a brushless DC motor is accurately adjusted and further radial position is adjusted, it is possible to achieve space saving and carry out stable control, and bearing power is increased. <P>SOLUTION: When motor winding and bearing winding are wound together on one stator tooth, the number of turns of the bearing winding is limited. To increase bearing power, consequently, a winding disposition is proposed. In this disposition, motor winding and bearing winding are alternately wound with the dimensions of a stator maintained and the number of turns of the bearing winding increased. Three-phase motor winding 311 is wound every one stator tooth 209, that is, on four stator teeth 209 at intervals of 90°. Reference alphanumeric codes a1, a2, b1, b2, c1, and c2 denote bearing winding. The bearing winding is wound on the stator teeth 209 without the three-phase motor winding 311 wound thereon so that the bearing winding and the three-phase motor winding 311 alternate. <P>COPYRIGHT: (C)2009,JPO&INPIT |
