Purpose

This paper aims to present an analytical electromagnetic model for wound rotor synchronous machines with a salient-pole rotor structure based on the two-dimensional subdomain technique.

Design/methodology/approach

The machine is divided into five active sub-regions: stator slots, stator slot openings, air gap, rotor slots and rotor slot openings. For each sub-region, the governing partial differential equations are derived and solved analytically.

Findings

The magnetic flux density distributions in all active sub-regions are analytically computed and other quantities such as back-emf, inductances, electromagnetic torque and unbalanced magnetic forces are also analytically calculated. The results of the analytical model are compared to those obtained from the finite element analysis to show the accuracy of the proposed model.

Originality/value

The two-dimensional analytical model of a wound rotor salient-pole synchronous machine using the sub-domain technique is the main contribution of the research.

中文翻译：

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绕线转子凸极同步电机电磁量的解析计算

目的

本文旨在基于二维子域技术，为具有凸极转子结构的绕线转子同步电机提供一个解析电磁模型。

设计/方法/方法

电机分为五个活动的子区域：定子槽，定子槽孔，气隙，转子槽和转子槽孔。对于每个子区域，导出控制性偏微分方程并进行解析求解。

发现

通过分析计算出所有活动子区域中的磁通密度分布，还可以分析计算其他量，例如反电动势，电感，电磁转矩和不平衡磁力。将分析模型的结果与从有限元分析获得的结果进行比较，以表明所提出模型的准确性。

创意/价值

研究的主要贡献是采用子域技术的绕线转子凸极同步电机的二维分析模型。