主要研究建立双螺旋桨电力推进船舶电力推进系统的数学模型，在此基础上进行数字模拟，研究其工作性能、预测该类船舶的操纵性和机动性。 The main research is to establish mathematical model of electric propulsion system for propulsion of double-propeller propulsion craft. Based on this, numerical simulation is conducted to study the performance of the propulsion system, and the maneuverability and maneuverability of this type of ship are predicted.