Analytical Solution for Electromagnetic Torque in Surface Permanent-Magnet Motors Using Conformal Mapping

被引：101

作者：

Zarko, Damir ^{[1
]}

Ban, Drago ^{[1
]}

Lipo, Thomas A. ^{[2
]}

机构：

[1] Univ Zagreb, Dept Elect Machines Drives & Automat, Fac Elect Engn & Comp, HR-10000 Zagreb, Croatia

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

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2009年 / 45卷 / 07期

关键词：

Air-gap permeance; electromagnetic torque; magnetic fields; permanent-magnet motors; FIELD DISTRIBUTION; DC MOTORS; MACHINES; RIPPLE;

D O I：

10.1109/TMAG.2009.2014689

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present an analytical method for the calculation of electromagnetic torque in surface permanent-magnet (PM) motors. Our method uses conformal mapping to calculate the electromagnetic torque by integrating the Maxwell stress tensor inside the air gap. It uses the radial and tangential components of the flux density in the slotted air-gap produced by the currents flowing in the three-phase armature winding. We demonstrate our analytical solution on a 7-kW four-pole surface PM motor and compare the results with finite-element solutions. We present the results for various angular spans of permanent magnets and various sizes of the slot opening to confirm the validity of the analytical approach.

引用

页码：2943 / 2954

页数：12

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