Design of Variable Flux Permanent-Magnet Machine for Reduced Inverter Rating

被引：117

作者：

Ibrahim, Maged ^{[1
]}

Masisi, Lesedi ^{[1
]}

Pillay, Pragasen ^{[1
,2
]}

机构：

[1] Concordia Univ, Dept Elect & Comp Engn, Montreal, PQ H3G 1M8, Canada

[2] Univ Cape Town, ZA-7701 Cape Town, South Africa

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2015年 / 51卷 / 05期

关键词：

Finite-element analysis (FEA); low coercive field magnet; spoke-type permanent-magnet motor; variable flux machines;

D O I：

10.1109/TIA.2015.2423661

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a design procedure for tangentially magnetized variable flux machines that aims to reduce the machine inverter rating. The proposed design can achieve high torque density at low speeds, and high efficiency at an extended speed range, as armature d-axis current pulses are applied at high speeds to reduce the magnet flux. In order to regain the full torque capability when the motor slows down, a magnetizing current pulse has to be applied. The amplitude of the magnetizing current is usually larger than the machine rated current. Therefore, the machine may require an oversized inverter in order to be able to remagnetize the magnets. The impact of different machine design parameters on the magnetization current requirement is investigated in order to reduce the inverter cost. The proposed machine design procedure is validated by experimental measurements on a variable flux machine prototype.

引用

页码：3666 / 3674

页数：9

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