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Double-V-shaped hybrid permanent magnet adjustable flux memory motor

A hybrid permanent magnet and memory motor technology, applied in synchronous motors with static armatures and rotating magnets, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc. The problem of large pulse, etc., can overcome the large demagnetization current pulse, reduce the amplitude, increase the power density and overload operation ability.

Inactive Publication Date: 2019-05-24
HARBIN INST OF TECH
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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 that the advantages of series and parallel hybrid permanent magnet adjustable flux motors cannot be taken into account, and to provide a double V type hybrid permanent magnet adjustable flux memory motor. The advantages of magnetically adjustable flux memory motor: increase the power density and overload operation capacity of the motor, and at the same time improve the shortcoming of the series hybrid permanent magnet adjustable flux memory motor with large demagnetization current pulses, and improve the motor's magnetic field adjustment and Expansion range

Method used

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  • Double-V-shaped hybrid permanent magnet adjustable flux memory motor
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specific Embodiment approach 1

[0029] Specific implementation mode one: the following combination Figure 5 ~ Figure 8 To illustrate this embodiment, the double V-type hybrid permanent magnet adjustable flux memory motor of the present invention includes a stator core 1, an armature winding 2, a rotor core 3 and a rotating shaft 10; the rotor core 3 is fixed on the rotating shaft 10 and is located at Inside the stator core 1, the armature winding 2 is arranged on the stator core 1;

[0030] It is characterized in that it also includes a V-shaped low-coercivity permanent magnet slot 4, a low-coercivity permanent magnet 5, a V-shaped high-coercivity permanent magnet slot 6, a high-coercivity permanent magnet 7 and an additional magnetic flux path 8, 2P V-shaped low-coercive force permanent magnet slots 4 and 2P V-shaped high-coercive force permanent magnet slots 6 are alternately and uniformly arranged in the rotor core 3 along the circumferential direction, and P is the number of pole pairs of the stator arm...

specific Embodiment approach 2

[0035] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the V-shaped included angle of the V-shaped low-coercive force permanent magnet slot 4 is 120 to 180 degrees; the V-shaped high-coercive force permanent magnet slot 6 The V-shaped included angle is 10-30 degrees.

[0036] When the V-shaped included angle of the V-shaped low-coercivity permanent magnet groove 4 is 180 degrees, a straight groove is formed, such as Figure 6As shown, a pair of low-coercivity permanent magnets 5 or a monolithic low-coercivity permanent magnet 5 can be installed side by side in the groove at this moment, when the V-shaped angle of the V-shaped low-coercivity permanent magnet groove 4 When being an angle other than 180 degrees, a low-coercivity permanent magnet 5 is respectively installed in two straight grooves, and there is an idle area at the bottom junction of the two low-coercivity permanent magnets 5, and the low-coercivity permanent magnet 5 A magnetic bridg...

specific Embodiment approach 3

[0037] Specific embodiment three: the difference between this embodiment and embodiment one or two is that the magnetization direction of the low-coercive force permanent magnet 5 is perpendicular to the long side of the radial section of the V-shaped low-coercive force permanent magnet groove 4, And the low-coercivity permanent magnets 5 in the same V-shaped groove are both N poles or S poles, and the magnetization directions of the low-coercivity permanent magnets 5 in two adjacent V-shaped grooves are opposite;

[0038] The magnetization direction of the high-coercivity permanent magnet 7 is perpendicular to the long side of the V-shaped high-coercivity permanent magnet groove 6 radial sections, and the magnetization direction of the high-coercivity permanent magnet 7 in the same V-shaped groove is opposite, the same The high-coercivity permanent magnet 7 in two straight slots of the V-shaped groove has the same magnetization direction as the respective adjacent low-coercivi...

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Abstract

The invention discloses a double-V-shaped hybrid permanent magnet adjustable magnetic flux memory motor, and belongs to the field of permanent magnet motors. According to the invention, the problem inthe prior art that the advantages of serial and parallel hybrid permanent magnet adjustable magnetic flux motors cannot be considered at the same time can be solved. According to the technical schemeof the invention, 2P V-shaped low-coercive-force permanent magnet grooves and V-shaped high-coercive-force permanent magnet grooves are alternately and uniformly formed in a rotor iron core in the circumferential direction. Each V-shaped low-coercive-force permanent magnet groove is provided with a pair of low-coercive-force permanent magnets. Each V-shaped high-coercive-force permanent magnet groove is provided with a pair of high-coercive-force permanent magnets. Each straight groove of each V-shaped high-coercive-force permanent magnet groove is provided with an additional magnetic flux path. A pair of low-coercive-force permanent magnets of the V-shaped low-coercive-force permanent magnet grooves and the high-coercive-force permanent magnets in the two V-shaped straight grooves adjacent to the low-coercive-force permanent magnet grooves are combined to form a magnetic pole. The V-shaped low-coercive-force permanent magnet grooves and the V-shaped high-coercive-force permanent magnet grooves penetrate through the whole motor in the axial direction.

Description

technical field [0001] The invention relates to a rotor structure of a double-V hybrid permanent magnet adjustable magnetic flux memory motor, which belongs to the field of permanent magnet motors. Background technique [0002] The adjustable flux memory motor changes the magnetization level of the low-coercivity permanent magnet by applying instantaneous direct-axis demagnetization and magnetization current pulses in the armature winding, so as to realize the real-time adjustment of the motor air gap flux density according to the motor working conditions, thereby expanding the The speed range of the motor. Compared with the traditional field-weakening speed control method, since the d-axis field-weakening current does not need to be continuously applied in the speed expansion region, the adjustable flux memory motor has higher efficiency and torque in the high-speed region. The adjustable flux memory motor using a single low-coercivity permanent magnet has low power densit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/14H02K1/27
Inventor 郑萍张书宽刘法亮王明峤乔光远郎杰文郭家旭
Owner HARBIN INST OF TECH
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