马骋,王海燕

（上海海事大学 轮机工程系，上海 201306）

    摘要：以电动机作为动力源来拖动大型船用主柴油机,使柴油机实现不发火运转,达到节能环保的目的。柴油机作为拖动系统的负载,负载扭矩随转速和曲轴转角而变化。以6ES35ME-B型低速大功率柴油机为例,建立单缸扭矩仿真模型进行仿真计算。确定拖动系统负载扭矩后根据异步电动机矢量控制原理搭建了无速度传感器的转差率控制的矢量调速控制系统。将倒拖工况下的扭矩模型作为负载与变频调速系统进行连接,对仿真模型进行计算并验证了电力拖动方案的可行性。试验证明250kW的电机可以拖动柴油机在0-60r/min范围内运转,调速性能良好。

    关键词：倒拖柴油机；电力拖动系统；柴油机摩擦扭矩；矢量调速；Simulink建模仿真

Abstract：The electric motor provides power for the diesel engine to drive it without firing. This can achieve the purpose of energy saving and environmental protection. For a diesel engine as the load of the driving system, the load torque changes with the speed and crank angle. Take the low speed diesel engine as an example to establish a simulation model of torque for single cylinder. After calculated load torque of drive system, we built a vector drive system which was controlled by the slip ratio without speed sensor according to the principle of asynchronous machine vector machine technology. The torque model was sued as the load to connect with the variable frequency speed regulation system. The system simulation model was calculated and the feasibility of the electric drive scheme was verified. And the Experiment proved that the 250 kW motor can drive diesel engine operate at 0-60 rev/min in which the speed regulation performance was good.

Key Words：Reversed Towing of Diesel Engine；Electric Drive System；Friction Torque of Diesel Engine；Vector Drive；Simulink Simulation Modeling