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Rotor auxiliary slot optimization design method for reducing vibration noise of built-in permanent magnet motor

A vibration noise, permanent magnet motor technology, applied in synchronous motors with static armatures and rotating magnets, electric components, magnetic circuit rotating parts, etc., can solve the problem of sacrificing average torque, deteriorating vibration, poor universality, etc. question

Active Publication Date: 2021-09-07
JIANGSU UNIV
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  • Application Information

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Problems solved by technology

But this method will sacrifice the average torque, and if it is applied to the fractional slot interior permanent magnet motor, it will even worsen the vibration situation
Therefore, the generalizability of this method is poor

Method used

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  • Rotor auxiliary slot optimization design method for reducing vibration noise of built-in permanent magnet motor
  • Rotor auxiliary slot optimization design method for reducing vibration noise of built-in permanent magnet motor
  • Rotor auxiliary slot optimization design method for reducing vibration noise of built-in permanent magnet motor

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In order to illustrate the beneficial effects of the present invention more simply and clearly, a detailed description will be given below in conjunction with a specific interior permanent magnet synchronous motor.

[0057] Step 1. First, according to the requirements of multiple operating conditions of the motor, determine the slot pole coordination, winding connection mode and rotor structure of the motor, that is, the integer slot distributed winding scheme and the single-layer V-shaped built-in permanent magnet structure;

[0058] Determine the main structural parameters of the embodiment moto...

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Abstract

The invention discloses a rotor auxiliary slot optimization design method for reducing the vibration noise of a built-in permanent magnet motor, and the method specifically comprises the steps of determining the size of the built-in motor according to the actual design requirements, wherein the built-in motor in the specification employs a single-layer V-shaped embedded structure; adopting a double-auxiliary-slot structure on the surface of the rotor, and optimizing the double-auxiliary-slot structure by using a multi-objective optimization algorithm. According to the invention, the rotor auxiliary slot structure is utilized to locally adjust the air-gap flux density distribution, so that the harmonic content which plays a main role in the vibration noise in the air-gap flux density can be remarkably reduced, and the electromagnetic harmonic content in an air-gap magnetic field is further improved; and then the optimal auxiliary slot structure and position point are selected in combination with a multi-target backbone particle swarm algorithm, the optimal electromagnetic force distribution condition is obtained, the vibration noise condition of the built-in permanent magnet motor in the multi-working-condition and wide-speed-domain operation process is obviously improved, and thus the operation stability of the motor is improved.

Description

technical field [0001] The invention relates to an optimal design method of a rotor auxiliary slot for reducing the vibration noise of a built-in permanent magnet motor, and belongs to the technical field of manufacturing new high-quality permanent magnet motors. Background technique [0002] The built-in permanent magnet synchronous motor has the characteristics of high power density, high rotor strength, wide field-weakening speed regulation capability, low permanent magnet eddy current loss and high efficiency, and is widely used in the field of new energy vehicle production. As the market demand for new energy vehicles continues to rise, the high-quality requirements for built-in permanent magnet motors have also further increased. Noise pollution is a kind of environmental pollution, which has become a major hazard to human health. Therefore, the low vibration and noise requirements of new energy vehicle motors are also getting higher and higher. Reducing the electroma...

Claims

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Application Information

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IPC IPC(8): H02K1/26H02K1/27H02K3/28H02K3/12H02K3/04H02K21/14H02K21/04
CPCH02K1/265H02K1/27H02K3/28H02K3/12H02K3/04H02K21/145H02K21/042H02K2213/03Y02T90/00
Inventor 吉敬华周云瀚赵文祥朱生道
Owner JIANGSU UNIV
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