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Built-in permanent magnet synchronous motor

A permanent magnet synchronous motor, built-in technology, applied to synchronous motors with static armatures and rotating magnets, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc. It can solve the problems of low speed and poor comprehensive quality of permanent magnet synchronous motor, and achieve the effect of optimizing magnetic steel orientation, low fluctuation and improving air gap flux density waveform.

Active Publication Date: 2015-04-22
SHANGHAI TOP MOTOR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing permanent magnet synchronous motor has many advantages, such as eliminating the mechanical commutator and brushes, less maintenance, and high efficiency. Cogging effect, there is greater torque fluctuation, which affects the motor's high efficiency, wide speed regulation, stable and low-noise operation, so the overall quality of the existing permanent magnet synchronous motors is poor

Method used

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  • Built-in permanent magnet synchronous motor
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  • Built-in permanent magnet synchronous motor

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Embodiment Construction

[0023] 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.

[0024] Such as figure 1 As shown, a built-in permanent magnet synchronous motor provided by the first embodiment of the present invention includes a stator 1 and a rotor 2, and an air gap is left between the inner peripheral surface of the stator 1 and the outer peripheral surface of the rotor 2;

[0025] The rotor 2 is provided with a plurality of permanent magnet slots at axially symmetrical intervals around the central axis of the rotor 2, and three permanent magnets 31, 32, 33 are arranged in each permanent magnet slot, and three permanent magnets 31, 32, 33 are arranged in each permanent magnet slot. Among the magnets, on...

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Abstract

The invention discloses a built-in permanent magnet synchronous motor, relates to the technical field of a motor and aims to solve the technical problem of improving the comprehensive quality of the motor. Multiple permanent magnet slots are axially and symmetrically arranged in a rotor of the motor along the central axis of the rotor at intervals, three permanent magnets distributed in an arc band shape are arranged in each permanent magnet slot, wherein one permanent magnet is a middle steel magnet, and the other two permanent magnets are side steel magnets; the built-in permanent magnet synchronous motor is characterized in that each middle steel magnet adopts the normal magnetization vertical to the surface of the steel magnet, and each two side steel magnets in one slot adopt the non-normal magnetization, so that the arc center of a magnet arrangement arc of each permanent magnet slot is enabled not to coincide with the magnetization orientation point of permanent magnets in the corresponding permanent magnet slot. According to the motor provided by the invention, the comprehensive quality of the motor is greatly improved.

Description

technical field [0001] The invention relates to motor technology, in particular to a built-in permanent magnet synchronous motor technology. Background technique [0002] Mechatronics and automation occasions increasingly require high efficiency, energy saving, low noise, and intelligence. High efficiency, low noise, high output, and fast response are required for the matching motors. However, many permanent magnet motors currently have electromagnetic Defects such as poor compatibility, high noise, small output, large torque fluctuation, low overload capacity and low power density. [0003] The rotors of permanent magnet synchronous motors are inlaid with rotor magnetic poles, and the rotor magnetic poles are arranged in arc-shaped strips of multi-segment magnetic steel (usually three segments). There are two types of rotor magnetic poles of existing permanent magnet synchronous motors: 1) Parallel orientation Magnetic pole, in this kind of magnetic pole, the magnetization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/14H02K1/27
Inventor 林德芳
Owner SHANGHAI TOP MOTOR
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