Driving method of six-phase and three-phase double-winding suspension complementary non-bearing magnetic flux motor

Abstract

The invention provides a driving method of six-phase and three-phase double-winding suspension complementary-type non-bearing magnetic flux motor. In the invention, two sets of windings are simultaneously embedded on the stator of the motor, in which a set of six-phase windings formed by coils nested on the stator electrodes, and the other is a main suspension winding embedded in the permanent magnet slots to generate the main suspension force required by the rotor. Simultaneously, through the torque current and the levitation current in the six-phase winding, the torque required for the loadand the compensation suspension required by the rotor suspension are generated. Under the condition of satisfying the rotor suspension force, the six-phase suspension current component and the copperloss generated by the three-phase suspension current are minimized, so as to realize the maximum suspension force generated by the rotor when the volume of the motor is constant, and the dynamic performance of the rotor suspension subsystem is improved.

Description

technical field [0001] The invention belongs to the field of motor control, and in particular relates to a six-phase and three-phase double-winding suspension complementary type bearingless flux motor driving method. Background technique [0002] The stator permanent magnet flux switching motor (FSPMM) embeds permanent magnets in the stator, and the rotor has a salient pole core structure. Therefore, this type of motor has the advantages of easy heat dissipation of the permanent magnets, and the rotor is suitable for high-speed operation. If the bearingless technology is extended to On this kind of motor, constructing a bearingless stator permanent magnet flux switching motor (BFSPMM) will generate huge economic and social value. [0003] The BFSPMM stator generally has 12 U-shaped iron core punches and 12 permanent magnets magnetized along the tangential direction, thus forming 12 stator poles, and each stator pole is covered with a coil, a total of 12 coils. The 12 coils ...

AI Technical Summary

Problems solved by technology

[0004] According to the introduction of the above BFSPMM structure, it can be seen that since the stator of this kind of motor has both permanent magnets and iron cores, the space in the stator slot of this kind of motor is very small, which leads to serious restrictions on the ampere-turns of the coil embedded in the slot. How to use It is an urgent scientific problem to generate sufficient torque and levitation force output at the same time in the limited stator slot space

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