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Polyphase reluctance motor

A reluctance motor and excitation technology, applied in electrical components, electromechanical devices, magnetic circuit static parts, etc., can solve the problem of low torque density of the motor, widen the range of constant power speed regulation, simple and sturdy structure, and high efficiency Effect

Active Publication Date: 2017-04-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing switched reluctance motor can only obtain unidirectional torque when it works within half an electric cycle, resulting in low torque density of the motor, and provides a multi-phase reluctance motor

Method used

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specific Embodiment approach 1

[0046] Specific implementation mode one: the following combination Figure 1 to Figure 9 Describe this embodiment, the polyphase reluctance motor described in this embodiment includes a stator and a rotor, an air gap is formed between the stator and the rotor, the stator includes an armature core 1-1, an armature winding 1-2 and an excitation unit,

[0047] The armature core 1-1 is cylindrical, and the air gap side surface of the armature core 1-1 has a plurality of axial slots, forming a structure in which the stator poles and stator slots are arranged at intervals along the circumferential direction; An armature coil is wound, and the armature coils belonging to the same phase are connected in series along the circumferential direction of the armature core 1-1 to form a phase armature winding, and the multi-phase winding composed of all phase armature windings is the armature winding 1-2;

[0048] The excitation unit is set on the armature core 1-1 yoke or the stator pole; ...

specific Embodiment approach 2

[0050] Specific implementation mode two: the following combination figure 1 and figure 2 Illustrate this embodiment, this embodiment will further describe embodiment one, the excitation unit is made up of main permanent magnet excitation unit 1-3 and electric excitation unit 1-4,

[0051] The main permanent magnet excitation unit 1-3 includes a plurality of flat main permanent magnets, the electric excitation unit 1-4 is composed of a plurality of excitation coils connected in series end to end, and the flat main permanent magnet is embedded in the corresponding armature core 1 at the bottom of the stator slot In the middle of the -1 yoke, each excitation coil is wound in the middle of the armature core 1-1 corresponding to the bottom of a stator slot, and all the excitation coils are wound in the same direction; the flat main permanent magnet and the excitation coil are along the armature core 1 -1 yokes arranged alternately;

[0052] The flat main permanent magnets are m...

specific Embodiment approach 3

[0059] Specific implementation mode three: the following combination image 3 Describe this embodiment, this embodiment will further explain Embodiment 1, the excitation unit is the main permanent magnet excitation unit 1-3, the main permanent magnet excitation unit 1-3 includes a plurality of flat main permanent magnets, each stator slot bottom A plate-shaped main permanent magnet is embedded in the middle of the yoke of the corresponding armature core 1-1;

[0060] The flat-shaped main permanent magnet is magnetized tangentially along the circumference, and the magnetization direction of adjacent flat-shaped main permanent magnets is opposite;

[0061] The flat main permanent magnet is a rare earth permanent magnet.

[0062] In this embodiment, the flat main permanent magnet is made of a rare earth permanent magnet with high remanence and high coercive force.

[0063] image 3 Among them, there are 12 flat main permanent magnets.

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Abstract

The invention belongs to the technical field of motors, discloses a multi-phase reluctance machine and solves the problem that only works for a half electric cycle, the conventional switch reluctance machine can acquire the one-way torque, thus the torque density of the motor is low. An armature core is in a cylinder shape. A plurality of axial slots are formed in the side surface of an airspace of the armature core to form a structure in which stator poles and stator slots are spaced along a peripheral direction. Each stator pole is wounded by an armature coil. Along the peripheral direction of the armature core, co-phasal armature coils are sequentially connected to for a phase armature winding, and a multi-phase winding, composed of the phase armature windings, is an armature winding. Excitation units are arranged on a yoke portion of the armature core or the stator poles. A rotator comprises a rotator core. A plurality of axial slots are formed in the side surface of an air gap of the rotator core to form a structure in which rotator poles and rotator slots are spaced along the peripheral direction.

Description

technical field [0001] The invention relates to a multiphase reluctance motor and belongs to the technical field of motors. Background technique [0002] The traditional switched reluctance motor structure such as Figure 10 As shown, the stator and rotor of the motor are salient pole structures, and the windings are concentrated windings with short ends. By sequentially energizing the stator field windings, the stator poles interact with the rotor poles to generate torque. Since there is neither winding nor permanent magnet on the rotor, it is only made of laminated silicon steel sheets, which can withstand high mechanical stress and is suitable for high-speed operation; at the same time, the motor has low cost, simple structure, reliable operation, and high-efficiency speed regulation range wide; high starting torque, low starting current; able to adapt to harsh working environments such as high temperature, high humidity, strong vibration, large overload, high speed, etc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K29/03H02K1/12H02K1/17H02K3/28H02K1/24
Inventor 寇宝泉杨小宝谢逸轩贺铁锐邵一
Owner HARBIN INST OF TECH
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