The locomotive adopts chopper main circuit of 4 uncombined phases and a control mode featuring accessory pulse generated firstly, main pulse secondly, and central phase shifting of the 4 phases. Special filter capacitor and commutating capacitor have also been made to fit the chopper. 该车采用了4相不重的斩波主电路和先发副脉冲、后发主脉冲及4相集中移相的控制方式,并特别试制了适用于斩波的滤波电容器及换相电容器。