Self-starting permanent magnet auxiliary synchronous reluctance motor rotor and motor

Abstract

The invention provides a self-starting permanent magnet auxiliary synchronous reluctance motor rotor and a motor. The self-starting permanent magnet auxiliary synchronous reluctance motor rotor comprises a plurality of rotor punching sheets, wherein the plurality of rotor punching sheets are laminated to form a rotor core, and permanent magnets are arranged on the rotor punching sheets; and the permanent magnets comprise an outer permanent magnet relatively located on the radial outer side and an inner permanent magnet relatively located on the radial inner side, the outer permanent magnet comprises an outer-layer ferrite, the inner permanent magnet comprises an inner-layer ferrite and neodymium iron boron, and the neodymium iron boron is positioned on a d shaft of the motor rotor and is positioned between the outer-layer ferrite and the inner-layer ferrite. According to the self-starting permanent magnet auxiliary synchronous reluctance motor rotor, the flux density of the middle position of the inner-layer ferrite can be enhanced, the demagnetization resistance of the motor is improved, the permanent magnet flux linkage of the motor can be effectively increased, the permanent magnet torque of the motor is improved, the torque output capability of the motor is improved, and the operation reliability of the motor is enhanced.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a self-starting permanent magnet assisted synchronous reluctance motor rotor and motor. Background technique [0002] Self-starting permanent magnet assisted synchronous reluctance motor combines the advantages of asynchronous motor on the basis of permanent magnet assisted synchronous reluctance motor. It not only has self-starting ability, but also can run efficiently at synchronous speed. Compared with the permanent magnet assisted synchronous reluctance motor, this type of motor can realize self-starting without a controller, which reduces the cost of the motor system, and without various losses caused by the controller, the efficiency of the motor system is improved. Compared with self-starting permanent magnet synchronous motors, the permanent magnet materials of this type of motor mainly use low-cost non-rare earth permanent magnet materials, such as ferrite, etc., which gr...

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the low ferrite coercive force of the self-starting permanent magnet assisted synchronous reluctance motor in the prior art, which leads to poor anti-demagnetization ability of the motor. Due to the action of the pivot reaction magnetic field, the permanent magnet has the defect that there is a great risk of demagnetization, thus providing a self-starting permanent magnet assisted synchronous reluctance motor rotor and motor

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