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Method for improving saliency ratio of synchronous reluctance machine

A technology of synchronous reluctance motor and saliency ratio, which is applied in the control of generators, motor generators, electronically commutated motors, etc. It can solve the problems of occupying a lot of computer memory resources and increasing the workload of designers.

Active Publication Date: 2016-02-24
HEBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Literature reports [Zhang Xinan, FooGilbertHockBeng, VilathgamuwaD.M., et al. An improved bust field-weakeaning algorithm for Direct-Controlled synchronous reluctance motor drives. [J]. IEEE Transactions on Industrial Electronics, 2015,. 62 (5): 3255-3263.] The air gap length and The ratio of the air layer is a structural parameter that affects the saliency ratio of the motor, but the finite element calculation requires a large amount of computer memory resources, and the SynRM model needs to be re-established when the air gap length and the ratio of the air layer are changed. Undoubtedly increased the workload of the designer

Method used

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  • Method for improving saliency ratio of synchronous reluctance machine
  • Method for improving saliency ratio of synchronous reluctance machine
  • Method for improving saliency ratio of synchronous reluctance machine

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Embodiment

[0089] This embodiment takes TLR-SynRM as the implementation object. The rotor structure of TLR-SynRM is formed by alternate lamination of cold-rolled silicon steel sheets and insulating plastics (or electrical paper and other insulating materials). Cold-rolled silicon steel sheets are a kind of magnetically permeable material, and their physical properties are anisotropic, namely Along different directions of the crystal lattice, the periodicity and density of atomic arrangement are not the same, which leads to different physical and chemical properties of the crystal in different directions. Therefore, the magnetic field lines flowing through the d-axis magnetic circuit are determined to be paramagnetic. , and the lines of force flowing through the q-axis magnetic circuit behave as reverse magnetism.

[0090] The method steps for improving the TLR-SynRM saliency ratio of this embodiment are as follows:

[0091] Step 1: Determine the structural parameters of TLR-SynRM

[00...

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Abstract

The invention relates to a method for improving the saliency ratio of a synchronous reluctance machine (SynRM). The method is based on the inherent stator and rotor structure parameters of SynRM, a saliency ratio calculation formula is obtained directly according to the equivalent d-axis and q-axis magnetic circuits of SynRM, the relational expression between the saliency ratio and a structure parameter to be optimized of the SynRM is obtained according to the saliency ratio calculation formula, and a higher saliency ratio is obtained by adjusting the value range of the structure parameter. Compared with a finite element method, by adopting the method of the invention, the computer memory resource occupied can be greatly reduced, the difficulty in mathematical operation is lowered, the saliency ratio of SynRM is improved significantly, and the inherent structure parameters of SynRM can be optimized.

Description

technical field [0001] The invention relates to a method for improving the salient pole ratio of a synchronous reluctance motor. Background technique [0002] In recent years, Synchronous Reluctance Machine (hereinafter referred to as SynRM) has been widely used in various high-quality variable speed drives and wind power generation, aerospace and other fields. Scholars at home and abroad have done in-depth research on the working principle, structural characteristics of the body, drive control technology, and electromagnetic performance analysis of synchronous reluctance motors. [0003] One of the main performance indicators of SynRM is the power factor of the motor, and the improvement of the power factor will reduce the increase of the transmission current on the transmission line and reduce the Joule loss and power loss on the transmission line. Therefore, the size of the power factor will directly affect the motor. However, the main factor affecting the power factor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/10
CPCH02P21/141
Inventor 董砚孙鹤旭颜冬荆锴石乐乐雷兆明梁涛
Owner HEBEI UNIV OF TECH
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