This paper proposes and investigates an innovative methodology that can have a significant impact on the market potential of wound field, small-medium size synchronous generators (SGs). The technique proposed here is aimed at removing the need for the traditional stator skewing that is so commonly used in SGs to achieve acceptable values of voltage total harmonic distortion. To do this, a nonstandard damper cage configuration is proposed that comprises modulation of the damper bars' positioning. An off-the-shelf, 400-kVA generator is used as a benchmark machine. Its rotor is optimized and modified according to the proposed technique. The results of the final machine are then compared to the benchmark machine highlighting the excellent advantages that can be achieved through this technique. A full-scale prototype of the modified generator is then built to experimentally validate the concept. Finally, a detailed analysis on all the performance aspects of the prototype is carried out, to guarantee that the proposed technique has no negative impact whatsoever on the generator's performance.

中文翻译：

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通过创新的阻尼笼设计消除中小型同步发电机定子偏移的方法


本文提出并研究了一种创新方法，该方法可以对绕线式中小型同步发电机（SG）的市场潜力产生重大影响。这里提出的技术旨在消除对 SG 中常用的传统定子偏移的需要，以实现可接受的电压总谐波失真值。为此，提出了一种非标准阻尼笼配置，其中包括阻尼杆定位的调节。使用现成的 400 kVA 发电机作为基准机器。根据所提出的技术对其转子进行了优化和修改。然后将最终机器的结果与基准机器进行比较，突出显示通过该技术可以实现的卓越优势。然后建造了改进后的发电机的全尺寸原型，以通过实验验证该概念。最后，对原型的所有性能方面进行了详细分析，以确保所提出的技术不会对发电机的性能产生任何负面影响。