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A Different Pole Inductor Motor with Implied Salient Pole

A technology of opposite poles and inductors, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc., can solve problems such as large cogging torque, increased wind friction loss, torque ripple, etc., and achieve cogging The effect of small torque, low wind friction loss and low torque ripple

Inactive Publication Date: 2016-02-03
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adoption of the salient pole structure makes the induction sub-motor have problems such as large cogging torque, severe torque ripple, and increased wind friction loss. The problem

Method used

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  • A Different Pole Inductor Motor with Implied Salient Pole
  • A Different Pole Inductor Motor with Implied Salient Pole
  • A Different Pole Inductor Motor with Implied Salient Pole

Examples

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Embodiment Construction

[0018] The present invention will be further explained below in conjunction with the accompanying drawings.

[0019] like figure 1 As shown in the figure, a heteropolar induction motor with implicit salient poles includes a stator and a rotor arranged inside the stator. The stator and rotor are coaxially installed, and the surface of the rotor is smooth and the interior has an implicit salient pole structure.

[0020] like figure 2 As shown, the motor rotor 3 is cylindrical, including the rotor core 2 and the rotating shaft, and there is neither permanent magnet nor excitation winding on the rotor. The rotor core 2 is made of laminated silicon steel sheets, and each silicon steel sheet is provided with several "mountain"-shaped magnetic isolation grooves 5 that are symmetrical to the axis of the rotating shaft. In this embodiment, the "mountain"-shaped magnetic isolation grooves 5 is 6, so each "mountain"-shaped magnetic isolation slot occupies a mechanical angle of 60°. T...

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Abstract

The invention provides an opposite pole type inductor motor hiding a salient pole. A motor stator core is of a lamination structure and is formed by overlaying silicon steel sheets, and a plurality of big grooves and a plurality of small grooves are formed in the silicon steel sheets. A stator side comprises DC exciting windings and three-phase armature windings, the exciting windings are embedded in the big grooves of the stator core, and the armature windings are embedded in the small grooves of the stator core. A motor rotor is also formed by overlaying silicon steel sheets, and m-shaped magnetic separating grooves are formed in the silicon steel sheets. The surface of the rotor is smooth, the m-shaped magnetic separating grooves of the inner portion restrict a main magnetic flux path inside the motor, a salient pole effect is formed on the rotor, and bidirectional alternating air-gap magnetic fields are established in air gaps. According to the opposite pole type inductor motor hiding the salient pole, a hiding salient pole structure is adopted, the cogging torque of the motor is lowered, the torque pulsation in the motor running process is reduced, the wind path structure of the motor is improved, wind friction loss in high-speed running of the motor is reduced, and the running efficiency of the motor is improved.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to an opposite-polarity induction motor with hidden salient poles. Background technique [0002] The rotor of the induction motor has a solid structure, which is simple and reliable, and there are no excitation windings or permanent magnets on the rotor. It has high strength and can withstand large centrifugal forces. Therefore, the induction motor is more used as a high-speed motor. In many fields Has a wide range of applications. [0003] In order to establish an alternating air-gap magnetic field, the rotor of the induction motor needs to adopt a salient pole structure, that is, grooves are evenly arranged on the surface of the rotor. The adoption of the salient pole structure makes the induction sub-motor have problems such as large cogging torque, severe torque ripple, and increased wind friction loss. The problem. Contents of the invention [0004] Purpose of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/24
Inventor 付兴贺李红艳林明耀
Owner SOUTHEAST UNIV
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