Single coil multi-phase magnetic suspension motor

The present invention relates to a single-winding multi-phase suspension motor pertaining to a suspension bearingless motor. The single-winding multi-phase suspension bearingless motor including a case, a rotor (1) and a stator (2) is characterized in that the rotor always keeps a suspension state without mechanical friction and only includes one set of windings on the motor stator, wherein, each phasing current is formed by the nestification of the rotating current component and the suspension current component. Said motor can not only generate a rotating magnetic field to make the motor rotate, but also generate controllable magnetic pull by adopting the composited magnetic field formed by said two current components, thus, the controlling of the suspension rotating of the rotor is realized. The single-winding multi-phase suspension motor does not have mechanical friction, but have a simple and compact winding structure, a low power comsumption and a high efficiency, and the design of multi-degree of redundancy of the winding can be realized and the reliability of the motor is also improved.