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Small-sized self-starting cast-aluminum rotor permanent magnet synchronous motor punching sheet

A technology for permanent magnet synchronous motors and cast aluminum rotors, applied in magnetic circuits, electrical components, electromechanical devices, etc., can solve the problems of increasing the risk of magnetic flux leakage, increasing costs, etc., to optimize the no-load back EMF waveform and reduce harmonics content, the effect of optimizing harmonic content

Inactive Publication Date: 2022-01-11
安徽明腾永磁机电设备有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the arrangement of the existing rotor punches makes it necessary to install a magnetic isolation bridge for the gap between the magnetic steel groove and the hole of the squirrel cage, and the gap between the hole of the cage bar and the outer circle of the punch needs to be Set up a Magnetic Isolation Bridge
That is to say, two magnetic bridges are set at one end of the magnetic steel slot, which increases the risk of magnetic flux leakage and also leads to an increase in cost

Method used

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  • Small-sized self-starting cast-aluminum rotor permanent magnet synchronous motor punching sheet
  • Small-sized self-starting cast-aluminum rotor permanent magnet synchronous motor punching sheet
  • Small-sized self-starting cast-aluminum rotor permanent magnet synchronous motor punching sheet

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Embodiment Construction

[0030] For ease of understanding, combined here Figure 1-13 , the concrete structure and working mode of the present invention are further described as follows:

[0031] The specific structure of the present invention is as figure 1 As shown, including the rotor stamping, since the stamping of the present application is suitable for small self-starting permanent magnet motors, the outer diameter of the rotor stamping is 89.2mm.

[0032] The rotor punch is provided with six magnetic steel slots 20, and the six magnetic steel slots 20 are equidistantly arranged along the circumference of the rotor punch. The magnetic steel groove 20 is provided with two symmetrical bends, the two bends form obtuse angles and both obtuse angles face the outer edge of the rotor punching plate to form a three-section U-shaped structure. Three permanent magnets 30 are respectively arranged in the three sections of slots. Six magnetic steel slots 20 middle sections are arranged in a whole row to...

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Abstract

The invention belongs to the field of permanent magnet motors, and particularly relates to a small-sized self-starting cast-aluminum rotor permanent magnet synchronous motor punching sheet, which comprises a rotor punching sheet with squirrel cage strip-shaped holes distributed at equal intervals on the circumference of the outer edge, the rotor punching sheet is provided with a magnetic steel groove, the end part of the magnetic steel groove is positioned between two adjacent squirrel cage strip-shaped holes, magnetic isolation bridges are arranged between the two end parts of the magnetic steel grooves and the outer edge of the rotor punching sheet and the end part of the magnetic steel groove is arranged between the two adjacent squirrel cage strip-shaped holes, so that the antimagnetic effect is improved, the cost is saved, and the aims of improving the torque pulsation, vibration and noise of the motor are fulfilled. The punching sheet design concept has stronger performance advantages on a small-base self-starting permanent magnet motor.

Description

technical field [0001] The invention belongs to the field of permanent magnet motors, in particular to a punching plate of a small self-starting cast aluminum rotor permanent magnet synchronous motor. Background technique [0002] At present, there are more and more applications in the permanent magnet motor industry. Small self-starting permanent magnet synchronous motors replace the original asynchronous motors and servo motors. The high-efficiency and energy-saving solution without controller control has become a hot spot in the energy-saving transformation of the small motor application industry. [0003] The traditional motor punching structure has weak anti-demagnetization ability, and the magnetic isolation bridge set between the magnetic steel grooves will generate magnetic flux leakage, which will increase the cost, especially in small self-starting motors, because of its small size, it is necessary to ensure that the motor The pull-in ability is high, and demagneti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/22H02K1/274
CPCH02K1/22H02K1/274H02K2213/03
Inventor 梅谦尚健鲁方春
Owner 安徽明腾永磁机电设备有限公司
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