Flux increase type built-in U type adjustable magnetic flux motor

A magnetic flux motor, U-shaped technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit, synchronous machine, etc., can solve the problems of uncontrollable demagnetization of AlNiCo permanent magnets, etc., to ensure stability, controllability, change Air-gap flux, possibility reduction effect

Active Publication Date: 2016-10-12
黑龙江省工研院资产经营管理有限公司
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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 solve the problem of uncontrollable demagnetization of AlNiCo permanent magnets prone to occur in high-load operation of a field-weakening adjustable flux motor, and at the same time reduce the difficulty of accurately adjusting the magnetization of Al

Method used

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  • Flux increase type built-in U type adjustable magnetic flux motor
  • Flux increase type built-in U type adjustable magnetic flux motor
  • Flux increase type built-in U type adjustable magnetic flux motor

Examples

Experimental program
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Effect test

Example Embodiment

[0020] Specific implementation mode 1: the following combination Figure 1 to Figure 3 To explain this embodiment, the increased magnetization type built-in U-shaped adjustable flux motor includes a stator core 1, an armature winding 2, a rotor core 3 and a shaft 9; the rotor core 3 is fixed on the shaft 9 and is located in the stator Inside the iron core 1, the armature winding 2 is arranged on the stator iron core 1;

[0021] It also includes p U-shaped permanent magnet slots 4, p NdFeB magnetic poles 5, 2p Al-Ni-Co magnetic poles 6 and p quadrature-axis magnetic barriers 8, where p is an even number, and the rotor core 3 is arranged alternately and evenly along the circumferential direction of the motor p U-shaped permanent magnet slots 4 and p quadrature-axis magnetic barriers 8, both U-shaped permanent magnet slots 4 and quadrature-axis magnetic barriers 8 penetrate the entire rotor core 3 in the axial direction, and the U-shaped permanent magnet slots 4 open toward the stat...

Example Embodiment

[0024] Example 1:

[0025] Combine figure 1 To explain this embodiment, the magnetization-increasing built-in U-shaped adjustable flux motor includes a stator, a rotor, and a rotating shaft. The stator of the present invention includes a stator core 1 and an armature winding 2. The armature winding 2 is arranged in the stator core slot, and the rotating shaft 9 is made of cast steel, the stator and shaft 9 are the same as conventional permanent magnet synchronous motors; the rotor includes U-shaped permanent magnet slots 4, neodymium iron boron magnetic poles 5, alnico magnetic poles 6, magnetic bridges 7 and quadrature axis magnetic barriers 8. , The rotor is arranged alternately and uniformly in the circumferential direction with U-shaped permanent magnet slots 4 and quadrature-axis magnetic barriers 8. Both U-shaped permanent magnet slots 4 and quadrature-axis magnetic barriers 8 penetrate the entire motor in the axial direction, and the U-shaped permanent magnet slots open tow...

Example Embodiment

[0026] Example 2:

[0027] Combine figure 2 It is explained that the difference between this embodiment and embodiment 1 is that the quadrature-axis magnetic barrier 8 is an elongated slot with round ends arranged in the radial direction of the motor, and its interior can also be non-magnetically conductive such as epoxy resin, carbon fiber, etc. , Non-conductive material filling.

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Abstract

The invention discloses a flux increase type built-in U type adjustable magnetic flux motor, and belongs to the field of permanent magnet motors. The flux increase type built-in U type adjustable magnetic flux motor aims at solving the problem that when a flux weakening type adjustable magnetic flux motor runs at high loads, uncontrollable demagnetization of an aluminum-nickel-cobalt permanent magnet is prone to happen. The flux increase type built-in U type adjustable magnetic flux motor comprises a stator core, an armature winding, a rotor core, a rotary shaft, p U type permanent magnet grooves, p neodymium iron boron magnetic poles, 2p aluminum-nickel-cobalt magnetic poles and p quadrature axis magnetic barriers, and p is an even number; the p U type permanent magnet grooves and the p quadrature axis magnetic barriers are alternately and evenly arranged on the rotor core in the circumferential direction of the motor, the U type permanent magnet grooves and the quadrature axis magnetic barriers penetrate through the whole rotor core in the axial direction, and openings of the U type permanent magnet grooves face the stator core; each U type permanent magnet groove is formed in the mode that two U type branch rectangular grooves are communicated with one bottom rectangular groove, one neodymium iron boron magnetic pole and two aluminum-nickel-cobalt magnetic poles are arranged in each U type permanent magnet groove, the neodymium iron boron magnetic poles are arranged in the bottom rectangular grooves of the U type permanent magnet grooves, and the aluminum-nickel-cobalt magnetic poles are arranged in the U type branch rectangular grooves in the two sides of the U type permanent magnet grooves.

Description

technical field [0001] The invention belongs to the field of permanent magnet motors. Background technique [0002] In order to overcome the problems that the direct axis component of the armature current increases, the quadrature axis component decreases, the copper loss increases, and the electromagnetic torque of the motor decreases rapidly when the traditional rare earth permanent magnet motor is running at a weak field speed. The adjustable magnetic flux memory motor with coercive force AlNiCo permanent magnet came into being. When the motor is running, the air gap flux density of the permanent magnet motor is adjusted by applying the direct axis charge and demagnetization pulse current, thereby expanding the speed regulation range of the motor. . However, the quadrature-axis reactance Lq of this type of motor is often greater than the direct-axis reactance Ld during design. When the motor is running at high load, it needs a negative direct-axis current component to ge...

Claims

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Application Information

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IPC IPC(8): H02K21/02H02K1/27
CPCH02K1/2706H02K21/028
Inventor 郑萍张书宽隋义王伟男王明峤田孟娇
Owner 黑龙江省工研院资产经营管理有限公司
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