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An Alternating Pole Permanent Magnet Bias Bearingless Double Salient Motor and Its Control Method

A doubly salient motor, permanent magnet bias technology, applied in AC motor control, control system, control mechanical energy and other directions, can solve the problems of increasing the difficulty of suspension control, suspension control interference, etc., to achieve stable and reliable suspension force, current stress balance , the effect of high reliability

Active Publication Date: 2021-01-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, adjusting the excitation current will change the bias magnetic field inside the motor, thereby changing the levitation force, bringing interference and coupling to the levitation control, and increasing the difficulty of levitation control

Method used

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  • An Alternating Pole Permanent Magnet Bias Bearingless Double Salient Motor and Its Control Method
  • An Alternating Pole Permanent Magnet Bias Bearingless Double Salient Motor and Its Control Method
  • An Alternating Pole Permanent Magnet Bias Bearingless Double Salient Motor and Its Control Method

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Embodiment Construction

[0038] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Hereinafter, embodiments of the present invention will be described in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refe...

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Abstract

The embodiment of the invention discloses an alternating pole permanent magnet bias bearingless double salient pole motor and a control method thereof, which relate to the technical field of bearingless motors, can alleviate the problems of unbalanced winding loss and heat generation, and improve the reliability of the motor. The invention includes: the iron core of the stator / rotor is a salient pole structure, each stator pole 1-1 faces the middle part of the surface of the air gap (11) and is slotted counterclockwise to the edge of the stator pole 1-1, and the slot is pasted with A permanent magnet, each permanent magnet facing the air gap (11) has the same polarity on the surface; each stator pole 1-1 is wound with an armature coil, and the armature coils are connected in series to form an armature winding, and the armature winding is respectively connected to the external main circuit Connection; every three stator poles 1‑1 are wound with suspension coils, and the suspension coils opposite in radial direction are connected in series to form suspension windings, which are connected with external suspension control circuits. The invention is suitable for high-speed applications such as aerospace electric drive systems.

Description

technical field [0001] The invention relates to the technical field of bearingless motors, in particular to an alternating pole permanent magnet bias bearingless double salient pole motor and a control method thereof. Background technique [0002] The reluctance type bearingless motor is a new type of motor that integrates the function of magnetic bearing and driving or power generation. It has the characteristics of high space utilization and compact structure. By adjusting the levitation current, the radial electromagnetic force between the motor poles is actively controlled. The traditional motor also improves the reliability of the high-speed operation of the motor, and improves the power density and efficiency. At present, schemes such as bearingless switched reluctance motor and electromagnetic bearingless double salient pole motor have been gradually developed. in: [0003] The structure of the bearingless switched reluctance motor is simple and reliable, and it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/14H02K1/17H02K1/24H02K3/18H02K3/20H02K3/28H02K11/21H02P25/02
CPCH02K1/146H02K1/17H02K1/24H02K3/18H02K3/20H02K3/28H02K11/21H02P25/02H02K7/09H02K21/44H02K1/14
Inventor 于立张卓然施于柯孙林楠陈旭
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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