稀土永磁同步发电机外特性的向量法分析

采用双反应理论，用向量法建立了稀土永磁同步发电机外行性的数学计算模型，并定量分析有关阻抗影响外特性的具体规律。计算结果表明，除了负载功率因数外，直轴电枢反应电抗对外特性的影响最大，漏阻抗对外特性的影响较小，凸极系数只在高功率因数时对外特性有较大的影响，在低功率因数的影响很小。

Vector Analysis of Voltage Regulation Characteristic of Rare Earth Permanent Magnet Generators

The classical theory of synchronous generator, with the vector analysis, is adopted to describe the voltage regulation characteristic of rare earth permanent magnet (REPM) generators. The mathematical calculation model is established and the rule, in which the voltage regulation characteristic is affected by parameters, is discussed. The analysis shows that it is the d axis armature reactance ( X ad ), besides power factor, which has the biggest influence on the voltage regulation characteristic. It also shows that leak resistance and reactance have little influence on the intrinsic voltage regulation rate. The salient pole coefficient markedly affects the voltage regulation characteristic only with high power factor. So it is necessary to design X ad as small as possible to get low intrinsic vol tage regulation rate. The mathematical calculation model is simple and practical and has believable accuracy proved by the data comparison of calculation and test. The model is helpful to design REPM generators with small voltage regulation rate.