Efficient cast copper self-starting permanent magnet motor

A permanent magnet motor and self-starting technology, which is applied to synchronous motors with stationary armatures and rotating magnets, synchronous machines, electrical components, etc., can solve the problems of burning motor windings, large starting current, and demagnetization of magnetic steel. Achieve the effect of reducing starting current, reducing impact and improving practicability

Pending Publication Date: 2020-05-15
上海寄泰驱动技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing self-starting permanent magnet motor adopts a cast aluminum rotor, and the starting current is too large, which may easily cause demagnetization of the magnet steel

Method used

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  • Efficient cast copper self-starting permanent magnet motor
  • Efficient cast copper self-starting permanent magnet motor
  • Efficient cast copper self-starting permanent magnet motor

Examples

Experimental program
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Effect test

Embodiment

[0020] Such as Figure 1-3 As shown, it is a high-efficiency cast copper self-starting permanent magnet motor provided by the present invention, which includes a housing made of a base 3 and front end covers 1 and rear end covers 7 on both sides, and the front end cover 1 is provided with a front bearing 2. The rear end cover 7 is provided with a rear bearing 8, the stator core 5 and the motor rotor 6 are set in the housing, and the circuit of the stator core 5 is connected to the junction box 4 outside the housing. An outer fan 10 is arranged on the outside of the rear end cover 7 , and a windshield 9 is arranged outside the outer fan 10 .

[0021] Such as figure 2 As shown, the motor rotor 6 includes an end ring 15 and a cast copper rotor core 16 .

[0022] Such as image 3 As shown, the motor rotor 6 includes mutually nested rotor punches 11 and shafts 14, the side of the rotor punches 11 close to the shaft 14 is embedded with permanent magnets 13; the rotor punches 11 ...

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Abstract

The invention discloses an efficient cast copper self-starting permanent magnet motor. The motor comprises a machine base and a shell which is composed of a front end cover and a rear end cover on thetwo sides of the machine base. A front bearing is arranged in the front end cover; a rear end cover is arranged in the rear end cover, a stator core and a motor rotor are arranged in the shell, a circuit of the stator core is connected into a junction box outside the shell, the motor is characterized in that the motor rotor comprises an end ring and a cast copper rotor core, the cast copper rotorcore comprises a rotor punching sheet and a shaft which are nested with each other, and a permanent magnet is embedded in one side, close to the shaft, of the rotor punching sheet; and rotor conducting bars are uniformly distributed on the rotor punching sheet. According to the high-efficiency cast copper self-starting permanent magnet synchronous motor provided by the invention, the starting current of the motor can be reduced, the self-starting permanent magnet synchronous motor can be well started, and the starting current of the product is controlled to be about 7 times by improving the motor rotor, so that the impact of motor starting on a power grid or a transformer is reduced, and the practicability of the product is improved.

Description

technical field [0001] The invention relates to a high-efficiency cast copper self-starting permanent magnet motor, which belongs to the technical field of motors. Background technique [0002] Starting permanent magnet motors are widely used in many fields because of their high efficiency, high power factor, and wide high-efficiency area, such as: textile machinery, petroleum oil pumping equipment, ceramics and ball mills in the building materials industry. Various self-starting motors have been widely used permanent magnet motor. The common features of these types of equipment are: they are all equipment for heavy-duty starting, and require a large starting torque; while running, the load rate is low. [0003] In order to meet the requirements of heavy-duty start-up of equipment, the capacity of the motor had to be increased during model selection in the past; but in normal operation, the load rate is very low, the efficiency is also very low, and the power factor is also...

Claims

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Application Information

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IPC IPC(8): H02K21/46H02K21/14
CPCH02K21/14H02K21/46
Inventor 黄先锋顾德军潘光宇吕剑
Owner 上海寄泰驱动技术有限公司
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