Research on the Axial Force of Conical-Rotor Permanent Magnet Synchronous Motors with Turbines

被引：2

作者：

Wang, Jiabao ^{[1
]}

Huang, Shoudao ^{[1
]}

Guo, Chao ^{[1
]}

Feng, Yaojing ^{[1
]}

机构：

[1] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China

来源：

ENERGIES | 2018年 / 11卷 / 10期

基金：

中国国家自然科学基金;

关键词：

conical-rotor permanent synchronous magnet motor (CR-PMSM); axial magnetic force; 3-D finite-element method (3-D FEM); d-axis current;

D O I：

10.3390/en11102532

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The general method to suppress the axial force of the permanent magnet synchronous motor (PMSM) direct-drive turbine is to increase the number of balance devices, such as balance disks and special bearings, to counteract its influence, but this also leads to complex system structure and higher mechanical losses. Aiming to solve the above issue, this paper presents a novel PMSM structure with a conical-rotor (CR). Due to its adaptive equilibrium of axial force and simple structure of rotor with turbine, the CR-PMSM can help improve the system efficiency. Both surface-type and interior-type motors are analyzed, and the axial magnetic force of CR-PMSM is studied in detail. The 3-D finite-element method (FEM) is used to model and simulate the machine, and the magnetic-field distribution, axial magnetic force and driving performance are obtained. Also, the control rule of d-axis current is analyzed to achieve the adaptive equilibrium of axial force. A 2.0 kW, 6000 r/min prototype motor is fabricated and tested to validate the theory.

引用

页数：20

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