变极绕组相位图分析中的一般问题

在研究采用槽号相位图分析变极绕组时,将相位图按是否含负槽号分为两类,并分别指定了变前极基准方案.在此基础上,对变前极每相槽号按变后极相位排列的分布情况,提出均匀型系数的概念和计算方法,将槽号分布类型的辨识归结为判断“等效极相组”间的相位重叠及其最小相位差的求取问题,从而获得分布类型的判别条件式,为利用相位图参数预测及处理变极方案中的一些问题提供了理论基础.

On a Slot Number Phase Diagram Analysis for 3-Phase Pole-Changing Windings

For the purpose of making use of slot phase diagrams in the analysis of a pole-changing winding, the phase diagrams are divided into two types according to whether or not the negative slot numbers are included in the phase diagrams. The original winding scheme is assigned to either type. The concept of even factor and its calculating method are proposed. The identification of types of slot number distribution can be reduced to the judgement of phase overlapping between equivalent pole-phase groups and the calculation of minimum phase difference between them. A discriminant for the distribution classification has been obtained.