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Magnetic field modulation hybrid excitation motor and multi-working-wave design method thereof

A hybrid excitation motor and magnetic field modulation technology, applied in the fields of rail transit and electric vehicles, to reduce the difficulty of processing, eliminate slip rings and armatures, and reduce process requirements

Active Publication Date: 2020-08-07
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to its many excitation sources, the mechanical strength, temperature rise, and processing technology brought about by the special structure and electromagnetic design are also issues that need to be considered during design.

Method used

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  • Magnetic field modulation hybrid excitation motor and multi-working-wave design method thereof
  • Magnetic field modulation hybrid excitation motor and multi-working-wave design method thereof
  • Magnetic field modulation hybrid excitation motor and multi-working-wave design method thereof

Examples

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example 1

[0085] figure 1 It is a structural schematic diagram of a hybrid excitation motor according to an embodiment of the present invention. Such as figure 1 As shown, the motor is a three-phase motor, including a stator (1) and a rotor (2), which are installed coaxially, and the stator (1) is sleeved in the rotor. The material of the stator core is the same as that of the rotor (2), which is formed by laminating silicon steel sheets. There is a groove on the surface of each stator tooth (6), which splits the end of the stator tooth (6) into two modulation teeth (7), and the excitation winding (4) is placed in the groove of the stator tooth, and the excitation adopts double-layer centralized Wound on two adjacent modulated teeth (7) split by different stator teeth (6), the armature winding (3) is placed in the open slot of the stator core, and is wound on the stator teeth ( 6) on. Among them, the excitation winding (4) is supplied with direct current, and the direction of the cu...

example 2

[0095] In another embodiment of the present invention such as figure 2 As shown, compared with this embodiment, the structure of the motor stator and rotor is exactly the same, but the installation positions of the armature winding (3), the field winding (4) and the permanent magnet (5) are different. In another embodiment, the armature The winding (3) is placed in the groove of the stator teeth, and the double-layer concentrated winding is on two adjacent modulation teeth split by different stator teeth; the excitation winding (4) is placed in the open slot of the stator core, The double-layer centralized winding is on a stator tooth (6); the magnetization direction of the permanent magnet (5) is radial magnetization, and the placement position is: two modulation teeth ( The polarities of the permanent magnets (5) on 7) are the same, and the polarities of the permanent magnets (5) on two adjacent modulating teeth (7) split by different stator teeth (6) are opposite.

[0096...

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Abstract

The invention discloses a magnetic field modulation hybrid excitation motor and a multi-working-wave design method thereof. The motor comprises a stator and a rotor, wherein the stator comprises a stator iron core, two sets of windings and permanent magnets, the two sets of windings comprise an armature winding and an exciting winding, the stator iron core is designed as an open slot, one set of windings is distributed in the open slot of the stator iron core, and is wound on one stator tooth in a centralized manner, the outer surface of each stator tooth is provided with a groove, the other set of windings is placed in the groove of the stator tooth, each stator tooth is split into two modulation teeth through the groove, one permanent magnet is placed on each modulation tooth, the otherwinding is wound on two adjacent modulation teeth formed by splitting different stator teeth in a centralized mode, and the magnetizing direction of the permanent magnets is consistent with or opposite to the direction of a magnetic field formed by the excitation winding on the modulation teeth. According to the invention, the permanent magnet magnetomotive force and the excitation magnetomotive force are connected in parallel on the magnetic circuit and are independent from each other, so that the risk of irreversible demagnetization caused by the introduction of an excitation current permanent magnet is avoided, and the effective exertion of the magnetic regulation capability is ensured.

Description

technical field [0001] The invention relates to a hybrid excitation motor and its multi-working wave design method, which belongs to the field of motors, and is particularly suitable for the application of electric vehicles requiring high torque and wide speed regulation range. In addition, according to the structure that all excitations are placed on the stator Features, suitable for long-distance rail transit. Background technique [0002] Compared with traditional electric excitation motors, permanent magnet motors have the advantages of large output torque and high efficiency, so they are widely used in various industries. However, due to the characteristics of the permanent magnet material itself, the permanent magnet magnetic field in the permanent magnet motor is relatively fixed, and the magnetic adjustment capability is limited. In order to improve the magnetic field adjustment ability of the motor and maintain a high output torque, the hybrid excitation motor came...

Claims

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Application Information

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IPC IPC(8): H02K21/22H02K3/20H02K21/04H02K1/17
CPCH02K1/17H02K3/20H02K21/04H02K21/227H02K2201/03H02K2213/03
Inventor 赵文祥蒋婷婷徐亮吉敬华
Owner JIANGSU UNIV
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