一种用于城轨制动能量存储系统的控制策略

A Control Strategy for Metro Energy Storage System

摘要:

为克服城轨车辆工况辨识困难问题，提出基于牵引变电站特性的控制策略，设计了一种带有比例积分环节双环电流型滑模变结构恒频控制器，替代普通比例积分(proportionintegral，PI)控制器，以实现该控制策略并改善能量存储系统性能.针对阻容性负载，给出一种提高启动速度的方法.最后通过仿真试验对控制有效性进行了验证，结果表明该控制策略有效，且控制性能优于普通PI控制.

Abstract:

A control strategy based on traction substation characteristic is proposed in order to surmount metro vehicle behaviour identification difficulties.To implement the control strategy and improve the performance of energy storage system,a constantfrequency sliding mode controller of double loop current mode with PI compensation is designed to replace an ordinary PI controller.Furtheremore,a method to improve the speed of startup characteristics is proposed for resistive and capacitive loading.Finally,the simulation results verify the effectiveness of this control strategy where performance exceeded an ordingnary PI control.