Novel Mechanical Flux-Weakening Design of a Spoke-Type Permanent Magnet Generator for Stand-Alone Power Supply

被引：5

作者：

Jiang, Mingyuan ^{[1
]}

Niu, Shuangxia ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong 999077, Peoples R China

来源：

APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 04期

关键词：

flux modulation; mechanical flux weakening; permanent magnet; spoke type; wide speed range; SYNCHRONOUS MOTORS; MACHINES; CAPABILITY; OPERATION; DRIVE;

D O I：

10.3390/app13042689

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Featured Application Stand-alone wind power generator. In this paper, a novel mechanical flux-weakening design of a spoke-type permanent magnet generator for a stand-alone power supply is proposed. By controlling the position of the adjustable modulator ring mechanically, the total induced voltage, i.e., the amplitude of the back EMF vector sum can be effectively adjusted accordingly by the modulation effect. Consequently, the variable-speed constant-amplitude voltage control (VSCAVC) with a large speed range can be achieved. Compared to the electrical flux-weakening method, the mechanical flux-weakening method is easier to operate without the risk of PM demagnetization. The analytical model is presented, and the operation principles are illustrated. To analyze the performance of different combinations of stator/rotor pole pairs, four cases are optimized and analyzed using the finite element method for comparison. The characteristics of VSCAVC are analyzed.

引用

页数：16

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