采用集中绕组的表面粉末冶金机的最佳磁通弱化

Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting. Pub Date : 2004-11-01 DOI:10.1109/IAS.2004.1348541

A. El-Refaie, T. Jahns

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引用次数: 134

摘要

提出了一种采用集中分槽定子绕组设计方法，实现表面永磁同步电机弱磁运行的优化设计方法。这种技术使显著增加机器电感成为可能，以达到提供恒功率运行的宽速度范围的临界条件。在提供正弦反电动势波形和低齿槽转矩的同时，可以实现最佳的磁链减弱条件。描述了一个封闭的解析模型，该模型可用于SPM机床的设计，以达到最佳的磁链弱化条件。该技术被应用于设计一个6千瓦的SPM机器，实现恒定功率运行在一个很宽的速度范围。采用封闭式分析和有限元分析两种方法对该机床的性能特性进行了比较。

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Optimal flux weakening in surface PM machines using concentrated windings

A design approach is presented for achieving optimal flux weakening operation in surface PM 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 back-emf 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.

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Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.

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