A Magnetic Concentration Doubly Salient Hybrid Permanent Magnet Memory Motor

Abstract

The invention discloses a magnetism gathering type doubly salient hybrid permanent magnet memory motor, which comprises a stator, a rotor, an armature winding, a magnetism regulating winding and a non-magnetic rotating shaft, and is characterized in that the stator and the rotor are of salient pole structures, the rotor is fixed on the rotating shaft, and the stator is arranged outside the rotor;the rotor comprises a rotor yoke and rotor teeth; the stator comprises a stator yoke, stator teeth, first permanent magnets and second permanent magnets, the cross sections of the first permanent magnets and the second permanent magnets are fan-shaped, the first permanent magnets are embedded in the stator yoke part and are uniformly distributed in the circumferential direction, the second permanent magnets are located between the adjacent stator teeth, and the number of the first permanent magnets and the number of the second permanent magnets are the same as that of the stator teeth; and thearmature winding and the magnetism regulating winding are both wound on the stator teeth and are respectively positioned above and below the second permanent magnets. The problem that the aluminum-nickel-cobalt permanent magnet is prone to self-demagnetization is solved, the armature reaction demagnetization resistance is enhanced, the air-gap magnetic field of the motor is adjustable, the rotating speed range of the motor is widened, and the weak magnetic copper loss is reduced.

Description

technical field [0001] The invention relates to a permanent magnet memory motor, in particular to a DC magnetic modulation type magnetic concentration double salient pole hybrid permanent magnet memory motor, which belongs to the technical field of permanent magnet motors. Background technique [0002] Due to the advantages of high efficiency, high power density and strong overload capacity of permanent magnet synchronous motor (Permanent Magnet Synchronous Machine, PMSM), PMSM has been widely used in aerospace, industrial and agricultural production, automobile and other fields. But the traditional PMSM has a big problem, the air gap magnetic field cannot be adjusted. After the permanent magnet is magnetized, the air gap magnetomotive force is provided by the residual magnetism. It is difficult to change the strength of the magnetic field. Unlike the permanent magnet motor with electric excitation, the magnetomotive force can be changed by changing the current, so the speed...

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Problems solved by technology

[0006] Purpose of the invention: Aiming at the defects of the above-mentioned prior art, the present invention provides a magnetism-concentrating double salient pole hybrid permanent magnet memory motor, which solves the problem of low coercive force aluminum Nickel-cobalt permanent magnets are prone to self-demagnetization and are affected by high-coercivity permanent magnets. The use of hybrid permanent magnets and parallel magnetic circuits improves the torque density and widens the speed range of the motor.

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