Efficient permanent magnet synchronous motor

A permanent magnet synchronous motor technology, applied to synchronous motors with stationary armatures and rotating magnets, synchronous machine parts, magnetic circuit rotating parts, etc., can solve the problem of low overload multiples of reluctance torque motors, weakened permanent Problems such as the mutual magnetic interaction of magnets and the low pull-in synchronization ability of the motor can achieve obvious energy-saving effects, reduced stator current and stator resistance losses, and high pull-in synchronization capabilities

Inactive Publication Date: 2010-06-09
山东工友集团股份有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Permanent magnets have high remanence. When inlaid, appropriate magnetic isolation measures are taken to weaken the mutual magnetic interaction between permanent magnets and facilitate installation; both ends are fixed with magnetic isolation aluminum plates to prevent axial movement of permanent magnets. Insufficient structure: Since the permanent magnet is straight, the utilization rate of the permanent magnet is low, the flux leakage coefficient is large, the anti-demagnetization ability is weak, the synchronous ability of the motor is low, the reluctance torque and the overload multiple of the motor are low

Method used

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Embodiment Construction

[0009] The present invention is further described below in conjunction with accompanying drawing:

[0010] As shown in the drawings, a high-efficiency permanent magnet synchronous motor is composed of a stator 1, a rotor, a fan and an end cover. The stator 1 includes a machine base and a stator core with windings. The rotor includes a rotating shaft 3, a rotor core 4, and an aluminum ring 5. And permanent magnet 2, the connection relation of stator 1, rotor, end cap, the structure and connection relation of rotating shaft 3, rotor iron core 4 and aluminum ring 5 are the same as the prior art, this does not go into details, it is characterized in that arc permanent magnet 2 is adopted , the inner side of the rotor is provided with an arc-shaped groove matching the arc-shaped permanent magnet 2. The direction of the arc-shaped groove is the same as the center line of the rotating shaft. , High coercive force, high magnetic energy product, linear demagnetization curve characteris...

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Abstract

The invention relates to the field of motor, in particular to an efficient permanent magnet synchronous motor which comprises a stator, a rotor, a fan and an end cap. The stator comprises a base and a winding stator core. The rotor comprises a rotating shaft, a rotor core, an aluminum ring and a permanent magnet, wherein an arc permanent magnet is arranged. An arc groove which is matched with the arc permanent magnet is arranged inside of the rotor. The arc permanent magnet is inlayed in the arc groove. By adopting the structure, the invention has the advantages of high utilization factor of permanent magnet, high demagnetizing property, high pull-in synchronism capability of motor, big reluctance torque and motor overloading times, and the like.

Description

technical field [0001] The invention relates to the field of motors, in particular to a high-efficiency energy-saving permanent magnet synchronous motor. Background technique [0002] As we all know, the existing permanent magnet synchronous motor is mainly composed of a stator, a rotor, a fan and an end cover. The stator and the rotor are electromagnetically connected, and the two ends of the stator and the rotor are fixedly connected to the end cover. The stator includes a machine base and a stator core with windings. The stator core with windings is pressed on the machine base by a press, and the rotor is equipped with a rotating shaft, rotor core, aluminum ring and straight permanent magnets. , the two ends are fixedly connected with the aluminum ring through nuts, screws, and a fan is provided at one end of the rotating shaft. my country is known as the "rare earth" kingdom, rich in rare earth resources, and the utilization rate of rare earth permanent magnet materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/14H02K21/02H02K1/27
Inventor 孟显东隋辉杰
Owner 山东工友集团股份有限公司
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