当一款发电机定转子主要尺寸定型后,转子的阻尼绕组性能是影响发电机超瞬态电抗的最主要因素。在不同的工况下,用户对发电机的超瞬态电抗的性能有不同的要求。通过阻尼绕组的调整基本可实现超瞬态电抗的调整。通过对1台3 MW无刷同步发电机转子阻尼绕组采用不同材质或不同的阻尼条数的设计方案,对超瞬态电抗值进行计算和分析,并通过低电压突然短路测试方式验证了不同方案对超瞬态电抗值的影响,以获得最佳的阻尼绕组设计方案。

When the main dimensions of a generator are fixed, the damper winding performance is the most important factor affecting the subtransient reactance of the generator. According to different situations, the end users have different requirements for subtransient reactance. The adjustment of damper winding could basically meet the requirements of the special subtransient reactance. The subtransient reactance of a 3 MW synchronous generator damper winding with different materials or different bar numbers was calculated. The calculation results were verified by low voltage sudden short circuit testing, and then the optimal damper winding design was obtained.

TM 341