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Like pole type inductor motor hiding salient pole

A homopolar and inductive technology, applied in the field of homopolar induction motors, can solve the problems of torque ripple, large cogging torque, increased wind and friction loss, etc., so as to reduce cogging torque and eliminate cogging convexity. Polar effect, low wind and friction loss effect

Inactive Publication Date: 2014-03-26
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, serious torque ripple, and increased wind friction loss. The problem

Method used

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  • Like pole type inductor motor hiding salient pole
  • Like pole type inductor motor hiding salient pole
  • Like pole type inductor motor hiding salient pole

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: as figure 1 As shown, a homopolar induction motor with implied salient poles includes a stator part and a rotor part located inside the stator. Among them, the stator core of the motor adopts a laminated structure, which is formed by lamination of silicon steel sheets. The stator part includes a stator core 2 with slots, an armature winding 6, an annular excitation winding 7, an end cover 8, an excitation winding bracket 9 and Case 1. The armature winding 6 is a three-phase winding symmetrically wound on the stator core teeth, and the armature windings 6 belonging to the same phase are connected in series or in parallel to form a phase winding. The annular field winding 7 is arranged between the armature winding 6 and the end cover 8 , and the annular field winding 7 is fixedly connected to the casing 1 through the field winding bracket 9 . Among them, the stator core 2 is formed by stacking iron core punches with slots, and the casing 1 and the end cove...

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Abstract

The invention provides a like pole type inductor motor hiding a salient pole. A motor stator core is formed by overlying of silicon steel sheets, three-phase armature windings are wound on the teeth of the stator core symmetrically, annular exciting windings are arranged between the armature windings and motor end caps, and the center lines of the exciting windings coincide with the center line of the stator core. A motor rotor is divided into two parts, the surface of the rotor part corresponding to the exciting windings is smooth, and the inner portion of a rotating shaft has no tooth socket; the surface of the rotor part corresponding to the armature windings is smooth, and magnetic separating grooves are formed in the inner portion of a rotating shaft in the axial direction. A main magnetic flux path in the motor is restrained through the magnetic separating grooves in the inner portion of the rotating shaft, a salient pole effect is formed on the motor rotor, and unidirectional alternating air-gap fields are established in air gaps. Through the adoption of a hiding salient pole structure, 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 a same-polarity induction sub-motor with hidden salient poles. Background technique [0002] The rotor of the induction sub-motor is an integral structure, 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 sub-motor is more used as a high-speed motor. In many fields (such as flywheel energy storage system, high-frequency pulse power supply, etc.) have a wide range of applications. [0003] In order to establish an alternating air gap magnetic field, the rotor of the induction motor has to adopt a salient pole structure, that is, the surface of the motor rotor is evenly grooved along the axial direction. The adoption of the salient pole structure makes the induction sub-motor have problems such as large cogging torque, serious torque ripp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/02
Inventor 付兴贺李红艳林明耀
Owner SOUTHEAST UNIV
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