复励牵引电动机便于实现无级磁场削弱,控制简单,并可减少晶闸管元件数量。但复励牵引电动机在控制上也带来一些新问题:如需要预励磁;为使并联牵引电动机间的负荷分配均匀,需要采取特别措施;牵引时串励和他励的调节方式,以避免产生振荡;制动力的控制方式及在低、中速区实现较大制动力的问题。本文就这些问题提出了解决的途径。 Fuli traction motor to facilitate stepless magnetic field weakening, simple control, and can reduce the number of thyristor components. However, traction control motor also brought some new problems: If you need pre-excitation; in order to parallel traction motor load distribution between the uniform, you need to take special measures; traction when the series excitation and his adjustment to avoid Oscillation; braking force control and low braking speed in the area to achieve greater braking force problems. This article puts forward the solution to these problems.