船舶电力推进系统中直接转矩控制技术的仿真

Simulation for the direct torque control technology of ship's power propulsion system

针对电力推进船舶中主推进电动机的调速控制环节,以目前最新的控制技术———直接转矩进行了原理分析,同时利用仿真软件对该控制系统进行了定性的仿真研究,给出了完整的仿真系统图和仿真运行结果,从运行结果可以看出定子磁链在一个范围内收敛于一个圆形;转速呈周期变化;仿真结果不仅符合控制原理,且可以看出其良好的动态性能;同时在转矩曲线上还可以反映出转矩脉动情况和平均转矩的稳定性,从而验证了该系统的优良动态性能.

This paper,based on the principles of modem control technology-the direct troque control as well as the simulating software,makes a qualitative simulating study and provides a system gram in addtion to the operating results for the speed controler of main propelling motor in the electricity-propelled ship. The results show that the stator magnetic loops disappear into a convergence of a circle; rotational speed curve takes on a periodical change; the simulating result not only conforms to the controlling principles, but also shows an excellent dynamic performance. Meanwhile, it assumes the pulsation of the torque and a stability of the average troque, which proves that this system possesses an excellent dynamic performance.