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Rotor core, rotor and motor

A technology of rotor iron core and iron core, which is applied to synchronous motors with stationary armatures and rotating magnets, electric components, electrical components, etc. Stability, the effect of reduced motor voltage regulation

Pending Publication Date: 2019-03-08
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a rotor iron core, a rotor and a motor, aiming to improve the problem that the magnetic steel of the existing permanent magnet assisted synchronous reluctance motor is easy to demagnetize

Method used

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  • Rotor core, rotor and motor
  • Rotor core, rotor and motor

Examples

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Embodiment 1

[0025] Example 1, please refer to figure 1 and figure 2 As shown, this embodiment provides a rotor core, including: a core body 1, on which there are several magnetic steel groove groups extending axially along the core body 1, and each magnetic steel groove group includes at least A magnetic steel slot 2, each magnetic steel slot 2 is provided with a first elastic layer 21 on the side wall close to the axis of the core body 1, and a second elastic layer 21 is provided on the side wall of each magnetic steel slot 2 away from the axis of the iron core body 1. The elastic layer 22, the first elastic layer 21 is made of a non-magnetic material, and the second elastic layer 22 is made of a magnetic material.

[0026] When the rotor core provided in the embodiment is applied, the magnetic steel needs to be assembled in the magnetic steel groove 2 to form a rotor. Then install the rotor inside the motor. After the rotor is installed in the motor, when the motor is running in the...

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Abstract

The present invention provides a rotor core, a rotor and a motor, and relates to the technical field of motors. The rotor core comprises: a core body. The core body is provided with a plurality of magnetic steel groove groups extending axially along the core body; each magnetic steel groove group comprises at least one magnetic steel groove; a first elastic layer is arranged on a sidewall of eachmagnetic steel groove close to the axis of the core body, and a second elastic layer is arranged on a sidewall of each magnetic steel groove away from the axis of the core body; and the first elasticlayer is made of a non-magnetic material, and the second elastic layer is made of a permeability magnetic material. After the rotor core provided by the present invention is installed in the motor, when the motor is operated in the weak magnetic state, the magnetic steel groove presses the first elastic layer to reduce the thickness of the first elastic layer; and at this time, the air gap of thedirect-axis magnetic circuit increases, the demagnetizing magnetic field of the direct-axis is correspondingly weakened, demagnetization resistance of the magnetic circuit of the magnetic steel is strengthened, and the magnetic steel is not easily demagnetized.

Description

technical field [0001] The invention relates to the field of motors, in particular to a rotor core, a rotor and a motor. Background technique [0002] The interior permanent magnet synchronous motor (IPM) is a motor in which permanent magnets are embedded inside the rotor, and the permanent magnet torque and reluctance torque of the motor's stator and rotor interaction are used to provide power to the load. At present, in order to improve the performance of the motor, there are two technical directions. One of the directions is to improve the performance of the motor by increasing the permanent magnet torque. The common method is to increase the magnetic energy of the permanent magnet embedded in the motor rotor, and use rare earth materials to increase the magnetic field strength of the air gap; the other direction is to improve the performance of the motor by increasing the reluctance torque. , the common method is to use low magnetic energy permanent magnets, use rare ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K21/12
CPCH02K1/274H02K21/12
Inventor 朱晓光陈华杰刘锋刘才李睿
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION