A Hybrid Magnet Flux Switching Memory Motor

A magnetic flux switching and memory motor technology, applied in magnetic circuits, synchronous machines, electromechanical devices, etc., can solve the problems of increasing excitation loss, reducing motor efficiency, and easy mutual influence, so as to achieve the effect of increasing motor efficiency and no excitation loss

Inactive Publication Date: 2019-01-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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Problems solved by technology

However, there is coupling between the two magnetic fluxes generated by the two magnetic potential sources of the hybrid excitation flux switching motor, which are easy to influence each other, increase the excitation loss, and reduce the efficiency of the motor

Method used

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  • A Hybrid Magnet Flux Switching Memory Motor

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Embodiment Construction

[0018] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] A magnetic flux switching motor with a parallel structure, the present invention takes a three-phase 12 / 10 pole type motor as an example. The stator of the motor includes 12 U-shaped iron core units, 6 high-coercivity permanent magnets (NdFeB permanent magnets are used in this embodiment) and 6 low-coercivity permanent magnets (AlNiCo is used in this embodiment), Among them, 6 high-coercivity permanent magnets adopt tangential magnetization. Grooves are formed between two adjacent iron core units, and 6 high-coercivity permanent magnets and 6 low-coercivity permanent magnets are respectively embedded in 12 In each groove, the types of permanent magnets inlaid in adjacent grooves are different, and the magnetization directions of adjacent high-coercivity permanent magnets are the same. A magnetic modulation pulse coil is arranged on ...

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Abstract

The present invention discloses a hybrid magnet flux switching memory motor. The stator of the motor includes n iron core units, n / 2 high-coercivity permanent magnets and n / 2 low-coercivity permanent magnets; the n / 2 high-coercivity permanent magnets are magnetized in a tangential direction; grooves are formed between every two adjacent iron core units; the n / 2 high-coercivity permanent magnets and the n / 2 low-coercivity permanent magnets are embedded into n grooves; the types of permanent magnets embedded in adjacent grooves are different; and the magnetization directions of adjacent high-coercivity permanent magnets are identical; each low-coercivity permanent magnet is provided with a magnetic pulse adjustment coil; the directions of current entering adjacent magnetic pulse adjustment coils are identical; and all the magnetic pulse adjustment coils are connected in series to form a magnetic pulse adjustment winding. With the hybrid magnet flux switching memory motor of the invention adopted, the defects of a traditional hybrid excitation flux switching motor can be eliminated, excitation loss can be reduced, and the efficiency of the motor can be improved.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a hybrid magnetic steel magnetic flux switching memory motor, which is suitable for wide speed regulation operation occasions. Background technique [0002] The permanent magnet steel and armature winding of the flux switching permanent magnet motor are located on the stator, and there is neither winding nor permanent magnet on the rotor. It has simple structure, reliable operation, easy heat dissipation, and has high power density, high efficiency, and load It has the characteristics of strong ability and high sinusoidal back EMF, so it is considered to be a structure most likely to replace the rotor type permanent magnet motor. [0003] However, because only the permanent magnets are excited, its ability to adjust the magnetic field is limited. Therefore, some experts and scholars have studied the electric excitation flux switching motor; although the magnetic field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/44H02K1/14H02K1/17
CPCH02K1/143H02K1/148H02K1/17H02K21/44
Inventor 李健王凯刘闯顾正雍王之赟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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