Wth the continuous development of production machinery in various ifelds, requirement for power plant to start AC motor’s performance is higher and higher.According to the AC motor auxiliary equipment used in power plant in the starting process, the thyristor voltage starting control method is put forward in this paper. Results showed that this method can effectively reduce the starting current and the impact on the grid.%目前随着各领域的生产机械不断发展，电厂对交流电机的启动性能要求也越来越高。文章针对电厂辅助设备所采用的交流电机在启动过程中出现的问题，提出了晶闸管调压启动控制方法。结果表明，此设计方法可以有效地减小启动电流和对电网的冲击。
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