Multi-polar permanent-magnet motor pole core structure

A magnetic pole core and permanent magnet motor technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc., can solve the problems of difficult distribution of permanent magnet magnetic poles and difficult realization of permanent magnet motor rotor structure, etc., to achieve the goal of promoting The effect of developing and reducing the size of the motor and simplifying the production process

Inactive Publication Date: 2016-02-17
马力
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, when the generator speed is 20 revolutions per minute, to generate 50HZ electric energy, the number of poles of the generator must be 300 poles. It is very difficult to di...

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  • Multi-polar permanent-magnet motor pole core structure
  • Multi-polar permanent-magnet motor pole core structure

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Embodiment Construction

[0018] A kind of pole iron core structure of multi-pole permanent magnet motor described in the present invention, such as figure 1 As shown, magnetic steel slots are evenly opened on the magnetic pole core 1, the number of slots of the magnetic steel slots is the same as the number of pole pairs of the motor, and the arc length and width of the magnetic steel slots are basically the same as the arc length left between the two magnetic steel slots. The arc length of the magnetic steel slot is calculated by the following formula:

[0019] T=πD / P

[0020] Among them: T-the arc length width of the magnetic steel slot and the arc length distance between two magnetic steel slots, unit: mm

[0021] D-motor rotor outer diameter, unit: mm

[0022] P-number of motor poles

[0023] In actual production, according to the distance between the magnetic steel and the motor rotor surface, the arc length and width of the magnetic steel groove can be properly corrected.

[0024] The magnet...

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Abstract

The invention provides a multi-polar permanent-magnet motor pole core structure, which mainly comprises a pole core and magnet steel, wherein the pole core is uniformly distributed with magnet steel grooves whose number is the same as that of motor pole pairs; each magnet steel groove accommodates magnet steel with the same N pole or the same S pole; the pole core is made of a good magnetic material; a pole with the opposite polarity to the magnet steel is formed between each two pieces of magnet steel, and the pole is the S pole or the N pole; and finally magnetic poles with the N poles and the S poles alternate uniformly are formed in the surface of the motor rotor. Compared with the existing product, half magnet steel grooves in the pole core can be reduced, and thus processing of a multi-polar motor or a super multi-polar motor is facilitated. When the permanent-magnet motor manufactured in the invention is used, a multi-polar structure can be realized easily, the structure of the invention can be widely applied to the new-energy industry, system configuration of the existing new-energy industry is changed, and development of the new-energy industry is promoted.

Description

Technical field [0001] The invention relates to a permanent magnet motor rotor structure, in particular to a multi-pole permanent magnet motor magnetic pole core structure, which belongs to the technical field of permanent magnet motors. Background technique [0002] There are two power grid frequency systems in the world, namely 50Hz frequency and 60Hz frequency system. Both generators and electrical equipment must meet the above two frequency requirements. According to the motor speed formula n=60f / p, it can be seen that the speed n of the generator is determined by the grid frequency f and the number of motor pole pairs p. Since the grid frequency is a constant value, the number of motor pole pairs is limited by the volume of the motor, and the number of motor poles cannot be set Too many, therefore, traditional motors usually run at a high speed of 750 to 3000 revolutions per minute. [0003] With the depletion of petrochemical energy and the pressure of environmental p...

Claims

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Application Information

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IPC IPC(8): H02K1/27
Inventor 马力
Owner 马力
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