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Permanent magnet exciting motor

A technology of excitation and permanent magnets, which is applied in the direction of magnetic circuits, electrical components, electromechanical devices, etc., can solve the problems of low utilization rate of permanent magnets, small output torque per unit volume of magnets, etc., to increase output torque, reduce consumption, reduce The effect of manufacturing costs

Active Publication Date: 2019-07-26
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a permanent magnet excitation motor, which aims to solve the technical problems of low permanent magnet utilization rate and small output torque per unit magnet volume in the existing permanent magnet excitation motor

Method used

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specific Embodiment approach

[0036] Further, see figure 1 , as a specific embodiment of the permanent magnet excitation motor provided by the present invention, the rotor structure 2 includes a rotor yoke 21, and a plurality of rotor teeth 22 and a plurality of rotor permanent magnets 23 are arranged on the rotor yoke 21, and each rotor tooth 22 and each rotor permanent magnet 23 are arranged alternately on the rotor yoke 21 in an annular array, and there is a rotor slot between two adjacent rotor teeth 22 (not shown in the drawings), and the rotor permanent magnet 23 is arranged in the above-mentioned rotor slot . In this way, the rotor teeth 22 can play the role of modulating the magnetic field, and the rotor permanent magnets 23 are magnetized in the radial direction.

[0037] In this embodiment, the rotor structure 2 is built into the stator structure 1, based on the "two-way magnetic field modulation effect", that is, the stator magnetic field and the rotor magnetic field are modulated into rich mag...

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Abstract

The invention belongs to the technical field of motor manufacturing, and discloses a permanent magnet exciting motor. The permanent magnet exciting motor comprises a stator structure and a rotor structure arranged in the stator structure; the stator structure comprises a stator yoke, a plurality of first and second stator teeth arranged on the stator yoke, and armature windings arranged between the adjacent first and second stator teeth; stator grooves are formed between the adjacent first and second stator teeth; a first split stator tooth and a second split stator tooth are arranged on eachfirst stator tooth; and a first stator permanent magnet is arranged on each second split stator tooth. In this way, the first split stator teeth and the second stator teeth can achieve the effect of magnetic field modulation; and in addition, the first stator permanent magnets are arranged on the second split stator teeth, so that the permanent magnets are prevented from being arranged on the whole first stator teeth, the usage amount of the permanent magnets is reduced, and the output torque of unit magnet volume is increased.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing, and more specifically relates to a permanent magnet excitation motor. Background technique [0002] With the increasingly prominent issues such as energy crisis and global warming, human society is facing severe challenges. Production, transportation electrification and utilization of new energy have become our inevitable choice. As the key equipment of electromechanical energy conversion, the overall performance of the motor directly affects the energy utilization efficiency. With the development of permanent magnet materials, permanent magnet motor technology has been widely used in electric vehicles, industrial transmission, wind power generation and other fields. Although existing permanent magnet motors can be used as direct drive motors, there are still low utilization rates of permanent magnets. , The output torque per unit magnet volume is small. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): H02K1/14H02K1/17
CPCH02K1/146H02K1/17
Inventor 蹇林旎石玉君邓正兴
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA