主动补偿脉冲发电机的饱和效应

The Effects of Saturation in the Active Compensator

主动补偿脉冲发电机 (ACPA)在放电过程中 ,电枢反应磁动势和合成磁动势的大小和位置是变化的 ,最大合成磁动势可达空载励磁磁动势的几倍甚至十几倍 ,从而造成主磁路处于严重的饱和状态。本文分析了ACPA的电枢反应性质以及ACPA放电过程中主磁路的饱和情况 ,提出了利用磁化曲线或空载特性计算饱和主电感的方法 ,建立了ACPA考虑主磁路饱和效应的瞬态饱和数学模型。仿真计算结果表明 ,饱和的影响使电流脉冲峰值下降 ,脉宽增大。ACPA样机的实验结果表明 ,所建立的瞬态饱和数学模型能较准确预测ACPA的输出电流脉冲波形。

This paper shows how the effects of saturation of the main flux path can be incorporated in the generalized state equations of the active compensator(ACPA).In the conventional equation linear magnetic conditions are assumed.When saturation of the main flux path is taken into account,the main inductances have to be modified and additional terms introduced.The analysis shows that the peak current is reduced and the pulse width is increased due to the effects of saturation.Both simulation and practice have demonstrated the efficiency of the method.