交流绕组谐波漏抗系数的通用计算方法

AN UNIVERSAL APPROACH FOR CALCULATING THE DIFFERENTIAL LEAKAGE OF AC MACHINES

根据交流电机绕组特点 ,对单相和三相交流电机绕组谐波分布规律作了分析 ,在此基础上结合有关数学推导 ,得出了一种能精确计算交流电机绕组谐波漏抗系数的新方法。该方法能普遍适用于计算单相或三相 ,正规或非正规 ,对称或不对称等任意具有隐极式结构交流电机的谐波漏抗系数。通过实例说明了该方法的正确性和实用性 ,并指出了目前常用的参数中存在的误差。

In this paper, the distribution regularity of harmonic waves is investigated. On the basis of it, an universal approach for calculating differential leakage of AC electric machines, regardless of winding types, single-phase or three-phase, regular or non-regular, integral-slot or fractional-slot, symmetrical or asymmetrical, is attained after corresponding mathematical reasoning. The novel approach distinguishes itself in exact result, universal property, and high calculation speed. In the end of this paper, examples are taken to illustrate the correctness and practicability of the novel approach. Besides, the error of conventional approaches is specified by contrast.