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Rotor core structure of asynchronous starting permanent magnet synchronous motor

A technology for permanent magnet synchronous motors and rotor cores, applied to synchronous machines, magnetic circuit shape/style/structure, magnetic circuits, etc., to achieve the effects of shortening start-up time, improving performance indicators, and reducing harmonic content

Pending Publication Date: 2020-09-22
JIANGSU AEROSPACE POWER ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to design a rotor core structure of an asynchronously started permanent magnet synchronous motor, so that the 380V-8p-30kW motor has good operating performance, and can reduce motor noise and vibration, while improving the working performance of the motor performance

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  • Rotor core structure of asynchronous starting permanent magnet synchronous motor
  • Rotor core structure of asynchronous starting permanent magnet synchronous motor

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Embodiment Construction

[0016] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0017] Such as figure 1 The rotor core structure of the asynchronously started permanent magnet synchronous motor shown includes a rotor punch group formed by overlapping several rotor punches 1 and a rotor magnetic steel 3 embedded on the rotor punch 1. The rotor punch 1 is ring-shaped , 80 damping holes 7 evenly distributed around the circumference are set on the rotor punch 1, and the damping holes 7 are located on the ring edge, and the damping strip 2 is pierced in the damping hole 7, and the damping strip 2 is made of brass rods, and the heat dissipation channel 6 is set on the damping hole 7 (Such as figure 2 As shown), the heat dissipation channel 6...

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Abstract

The invention discloses a rotor core structure of an asynchronous starting permanent magnet synchronous motor, and the structure comprises a rotor punching sheet group which is formed by superposing aplurality of rotor punching sheets, and a rotor magnetic steel which is embedded on the rotor punching sheets, wherein the rotor punching sheets are annular, the rotor punching sheets are provided with damping holes, and the damping holes are located in the annular edge; damping strips are arranged in the damping holes in a penetrating mode, heat dissipation channels are formed in the damping holes, the heat dissipation channels extend to the outer ring face of the rotor punching sheet, arc-shaped magnetic steel grooves are formed in the rotor punching sheet, rotor magnetic steel is embeddedin the magnetic steel grooves, the rotor magnetic steel adopts a magnetizing mode of a Halbach array, and axial ventilation holes are formed in the rotor punching sheet. According to the rotor core structure of the asynchronous starting permanent magnet synchronous motor, the 380V-8p-30kW motor has good operation performance, the noise and vibration of the motor can be reduced, and meanwhile, theworking performance of the motor is improved.

Description

technical field [0001] The invention relates to the technical field of an asynchronously started permanent magnet synchronous motor, in particular to a rotor core structure of an asynchronously started permanent magnet synchronous motor. Background technique [0002] As an indispensable drive core component in heavy industry, electric motors largely determine the amount of energy used. Among them, up to now, asynchronous induction motors (rotating speed of 1500-3000r / min) and gearboxes are still widely used in this field as equipment drive systems, which bring lower energy usage and energy consumption. Considering the outstanding performance of permanent magnet motor technology in many aspects, compared with similar motors, the weight of this type of motor is only 1 / 10 of ordinary motors. At the same time, the gearbox and linkage device are omitted, and the energy saving rate can be achieved by 30% to 40%. Therefore, using permanent magnet motors in industrial production as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/28H02K1/32H02K21/46
CPCH02K1/276H02K1/28H02K1/32H02K21/46
Inventor 程寿国钱伟赵勇
Owner JIANGSU AEROSPACE POWER ELECTRIC
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