Optimal flux weakening in surface PM machines using fractional-slot concentrated windings

被引：314

作者：

El-Refaie, AM ^{[1
]}

Jahns, TM ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2005年 / 41卷 / 03期

关键词：

concentrated; flux weakening; fractional slot; optimal; permanent magnet; surface; synchronous; windings;

D O I：

10.1109/TIA.2005.847312

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A design approach is presented for achieving optimal flux-weakening operation in surface permanent-magnet (SPM) synchronous machines by properly designing the machine's stator windings using concentrated, fractional-slot stator windings. This technique makes it possible to significantly increase the machine inductance in order to achieve the critical condition for providing wide speed ranges of constant-power operation. The conditions for optimal flux weakening can be achieved while simultaneously delivering sinusoidal line-to-line back-electromotive-force waveforms and low cogging torque. A closed-form analytical model is described that can be used to design SPM machines to achieve optimal flux-weakening conditions. This technique is applied to design a 6-kW SPM machine that achieves constant-power operation over a wide speed range. Performance characteristics of this machine are compared using both closed-form and finite-element analysis.

引用

页码：790 / 800

页数：11

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