This paper introduces a power controlling system for electrosurgical generator based on thyristor, and proposes a power compensating method to maintain the output power invariable when the AC voltage fluctuates.

• 介绍了基于可控硅整流电路的高频电刀控制系统,并针对该类型电刀的输出功率随电网电压波动而发生漂移的问题,采用了一种功率补偿的方法,实现输出功率在不同的电网电压的波动下保持恒定。