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Low-torque-ripple permanent magnet motor for electric automobile

A torque fluctuation and electric vehicle technology, applied in electric vehicles, motors, electric components, etc., can solve the problems of low power density, low overload capacity, high noise, etc., to reduce torque and torque fluctuations, improve motor efficiency, Overall quality improvement effect

Inactive Publication Date: 2015-02-04
SHANGHAI TOP MOTOR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the development of high-quality permanent magnet drive motors suitable for electric vehicles, there are still various technical bottlenecks, such as high noise, large torque fluctuations, low power density, low overload capacity and poor reliability. Meet the requirements of industrialization

Method used

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  • Low-torque-ripple permanent magnet motor for electric automobile
  • Low-torque-ripple permanent magnet motor for electric automobile
  • Low-torque-ripple permanent magnet motor for electric automobile

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Embodiment Construction

[0027] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention, and any similar structures and similar changes of the present invention should be included in the protection scope of the present invention.

[0028] Such as Figure 1-3 As shown, a low torque ripple permanent magnet motor for electric vehicles provided by the first embodiment of the present invention includes a stator 1 and a rotor 2, and there is a uniform radial air gap between the stator and the rotor, and the rotor 2 The outer peripheral surface is axisymmetrically fixed with a plurality of surface-mounted permanent magnet poles 3 curved along the circumferential direction of the rotor in a convex arc shape, and each permanent magnetic pole 3 is arranged at intervals along the circumferential direction of the rotor;

[0029] It is characterized in that: the perm...

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Abstract

A low-torque-ripple permanent magnet motor for an electric automobile belongs to the technical field of a motor, and is to solve the technical problems of high torque ripple and low efficiency of a conventional motor. The motor comprises a stator and a rotator. A uniform radial air gap is formed between the stator and the rotator. The outer circumference surface of the rotator is symmetrically and fixedly provided with a plurality of convex-arc-type bent permanent magnet poles. The permanent magnet poles are formed by splicing a plurality of radially-magnetized convex-arc-type magnetic steel along the circumference of the rotator in sequence, wherein the magnetic steel in the middle position is the center magnetic steel, and the other magnetic steel is side magnetic steel. Even number of side magnetic steel is provided. The side magnetic steel is arranged at the two sides of the center magnetic steel respectively in a symmetric manner, and the thickness of each side magnetic steel is consistent. The thickness of each magnetic steel is consistent and the width of the center magnetic steel is larger than that of the side magnetic steel, or the thickness of the center magnetic steel is larger than that of the side magnetic steel. The motor provided in the invention is especially suitable for the electric automobile.

Description

technical field [0001] The invention relates to motor technology, in particular to a low-torque-fluctuating permanent-magnet motor technology for electric vehicles. Background technique [0002] As a clean and energy-saving new type of transportation, electric vehicles have the biggest advantage of "zero emissions". Because it has no pollution during driving, low heat radiation, low noise, does not consume gasoline, can use a variety of energy sources, and is easy to use and maintain, it has become a hot spot in today's automobile research and development. The motor is the core of the electric drive system, and the performance and efficiency of the motor directly affect the performance of the electric vehicle. At present, in the development of high-quality permanent magnet drive motors suitable for electric vehicles, there are still various technical bottlenecks, such as high noise, large torque fluctuations, low power density, low overload capacity and poor reliability. M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/16
CPCH02K1/165H02K1/274H02K21/024H02K2201/03Y02T10/64
Inventor 林德芳
Owner SHANGHAI TOP MOTOR
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