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Tapered bearingless asynchronous motor

An asynchronous motor, bearingless technology, applied in asynchronous induction motors, electrical components, electromechanical devices, etc., to achieve the effects of high critical speed, simple and compact structure, and simplified mechanical structure

Inactive Publication Date: 2012-06-20
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of the existing five-degree-of-freedom bearingless asynchronous motor system, and propose a new type of motor with simple and compact structure, small volume, light weight, more perfect functions, high power density, large bearing capacity and high reliability. Five degrees of freedom bearingless asynchronous motor

Method used

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  • Tapered bearingless asynchronous motor
  • Tapered bearingless asynchronous motor
  • Tapered bearingless asynchronous motor

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Embodiment Construction

[0018] like figure 1 As shown, the conical bearingless asynchronous motor includes a motor housing and a mechanical shaft 3, and the mechanical shaft 3 passes through the left and right ends of the motor housing. Two identical bearingless asynchronous motors are installed on the left and right ends of the motor housing, namely the left conical bearingless asynchronous motor 1 and the right conical bearingless asynchronous motor 2. Asynchronous motors are connected symmetrically. The left conical bearingless asynchronous motor 1 or the right conical bearingless asynchronous motor 2 is composed of a conical stator 11 , a torque control winding 12 , a suspension force control winding 13 and a conical rotor 14 . The conical stator 11 is formed by laminating electrical silicon steel sheets. On the conical stator 11, a certain number of stator slots are opened in the axial direction. In the radial direction, each stator slot is divided into inner and outer layers. The suspension f...

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Abstract

The invention discloses a tapered bearingless asynchronous motor. A left tapered bearingless asynchronous motor and a right tapered bearingless asynchronous motor which are identical to each other and respectively arranged at the left end and the right end of a motor casing are symmetrically connected to a mechanical rotating shaft; the left tapered bearingless asynchronous motor, as well as the right tapered bearingless asynchronous motor, consists of a tapered stator, a torque control winding, a levitation force control winding and a tapered rotor; the tapered rotors are fixedly connected with the mechanical rotating shaft; a plurality of stator slots are axially formed on each tapered stator; each stator slot is provided with an inner layer and an outer layer in the radial direction, and the levitation force control winding and the torque control winding are respectively arranged in the inner layer and the outer layer; and the difference between the number of pole-pairs of the levitation force control windings and the number of pole-pairs of the torque control windings is 1. The tapered bearingless asynchronous motor dispenses with magnetic levitation bearings indispensable for a traditional five-degree-of-freedom bearingless asynchronous motor, and has the advantages of simple structure, short axial length, high critical rotational speed, small reactive loss and the like.

Description

technical field [0001] The invention is a conical bearingless asynchronous motor, which is suitable for many special power transmission occasions such as centrifuges, turbomolecular pumps, compressors, flywheel energy storage, high-speed and high-precision machining, aerospace, and life sciences. Special occasions such as aseptic workshops without lubrication and sealing, no mechanical contact, no friction and wear, vacuum technology, clean rooms, etc., belong to the field of magnetic levitation motors with bearingless technology. Background technique [0002] In order to realize the stable levitation of the bearingless asynchronous motor rotor, the four degrees of freedom in the radial direction and the single degree of freedom in the axial direction (five degrees of freedom in total) must be constrained simultaneously. The traditional five-degree-of-freedom bearingless asynchronous motor usually has the following three structures: [0003] 1. It is composed of one axial ...

Claims

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Application Information

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IPC IPC(8): H02K17/36H02K1/16H02K3/04
Inventor 孙晓东左文全杨泽斌朱熀秋
Owner JIANGSU UNIV
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