Magnetic-increase radial interior line-styled adjustable flux motor

A magnetic flux motor, in-line technology, applied in the magnetic circuit shape/style/structure, magnetic circuit, synchronous machine, etc., can solve problems such as uncontrollable demagnetization of AlNiCo permanent magnets, to ensure stable controllability, Effect of changing air gap flux, reducing risk

Active Publication Date: 2016-12-07
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 AlNiCo permanent magnets online, and provide a This type uses AlNiCo permanent magnets and NdFeB permanent magnets at the same time, radially built in-line magnetic poles, and the quadrature axis reactance Lq is smaller than the direct axis reactance Ld, that is, the magnetization adjustable flux motor

Method used

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  • Magnetic-increase radial interior line-styled adjustable flux motor
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  • Magnetic-increase radial interior line-styled adjustable flux motor

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specific Embodiment approach 1

[0020] Specific implementation mode one: the following combination Figure 1 to Figure 3 To illustrate this embodiment, the magnetized radial built-in inline adjustable flux motor described in this embodiment includes a stator core 1, an armature winding 2, a rotor core 3 and a rotating shaft 9; the rotor core 3 is fixed on the rotating shaft 9, And located inside the stator core 1, the armature winding 2 is arranged on the stator core 1;

[0021] It also includes inline permanent magnet slots 4, p NdFeB magnetic poles 5, 2p AlNiCo magnetic poles 6 and p cross-axis magnetic barriers 8, p is an even number, and the rotor core 3 is arranged alternately and evenly along the circumference of the motor p One inline permanent magnet slot 4 and p cross-axis magnetic barriers 8, the inline permanent magnet slot 4 and the cross-axis magnetic barrier 8 all run through the entire rotor core 3 in the axial direction, and each inline permanent magnet slot 4 One NdFeB magnetic pole 5 and t...

Embodiment 1

[0025] combine figure 1 To illustrate this embodiment, the magnetized radial built-in inline adjustable flux motor includes a stator, a rotor, and a rotating shaft. The stator in the present invention includes a stator core 1 and an armature winding 2, and the armature winding 2 is arranged in the slot of the stator core. Among them, the rotating shaft 9 is made of cast steel, the stator and the rotating shaft 9 are the same as the conventional permanent magnet synchronous motor; the rotor includes permanent magnet slots 4, NdFeB magnetic poles 5, AlNiCo magnetic poles 6, magnetic bridge 7 and quadrature axis magnetic barrier 8. The rotor is alternately and evenly arranged in-line permanent magnet slots 4 and quadrature-axis magnetic barriers 8 along the circumferential direction. The in-line permanent magnet slots 4 and the quadrature-axis magnetic barriers 8 run through the entire motor axially. One NdFeB magnetic pole 5 and two AlNiCo magnetic poles 6 are arranged in the ma...

Embodiment 2

[0027] combine figure 2 Note that the difference between this embodiment and Embodiment 1 is that the quadrature-axis magnetic barrier 8 is a long strip-shaped groove arranged radially along the motor, with smooth ends at both ends, and its interior can also be made of non-magnetically conductive epoxy resin, carbon fiber, etc. , Non-conductive material filling.

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Abstract

The invention provides a magnetic-increase radial interior line-styled adjustable flux motor, belongs to the field of permanent magnet motors and aims at solving the problem that uncontrollable demagnetization of an aluminum-nickel-cobalt permanent magnet is easily generated when a weak magnetic type adjustable flux motor is in high load operation. The magnetic-increase radial interior line-styled adjustable flux motor comprises a stator core, armature windings, a rotor core, a rotating shaft, line-styled permanent magnet slots, p neodymium-iron-boron magnetic poles, 2p aluminum-nickel-cobalt magnetic poles and p quadrature-axis magnetic barriers; wherein the rotor core is fixed on the rotating shaft and is located in the stator core; the armature windings are arranged on the stator core; p is an even number; p line-styled permanent magnet slots and p quadrature-axis magnetic barriers are alternately and uniformly arranged on the rotor core along the circumferential direction of the motor; the line-styled permanent magnet slots and the quadrature-axis magnetic barriers penetrate through the overall rotor core along the axial direction; each line-styled permanent magnet slot is provided with one neodymium-iron-boron magnetic pole and two aluminum-nickel-cobalt magnetic poles; each neodymium-iron-boron magnetic pole is arranged at the middle part of the corresponding line-styled permanent magnet slot; and the aluminum-nickel-cobalt magnetic poles are arranged at two sides of the corresponding neodymium-iron-boron magnetic poles.

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 郑萍张书宽白金刚程路明陈敬东
Owner 黑龙江省工研院资产经营管理有限公司
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