基于动态延时的铁路功率调节器控制策略研究

Research on Control Strategy of Railway Power Conditioner Based on Dynamic Delay

铁路功率调节器(RPC)电能质量控制性能同RPC电流控制策略相关联。现有的控制策略针对RPC稳态与动态性能,通常采用不同的电流控制器加以改善,但由于不同控制器的动态响应不一致,会形成相互干扰与耦合,造成电流波形的畸变。为此,在综述和分析现有控制算法基础上,采用动态延时技术对重复控制器进行重构,形成一种改进型重复控制策略,能够很好地解决不同控制器动态响应差异性问题,从而有效抑制控制器之间的干扰与耦合,提高RPC综合治理性能。最后,通过仿真与实验验证所提策略的可行性与有效性。

The power quality control performance of railway power conditioner(RPC)is related to the current control st rategy of RPC.The existing control strategies usually use different current controllers to improve the steady-state and dynamic performance of RPC.However,due to the different dynamic response of different controllers,mutual interfer-ence and coupling will be formed,which will cause the distortion of current waveform.Therefore,on the basis of sum-marizing and analyzing the existing control algorithms,the dynamic delay technology is used to reconstruct repetitive controller to form an improved repetitive control strategy,which can well solve the problem of dynamic response difference of different controllers,so as to effectively suppress the interference and coupling between controllers,and improve the comprehensive governance performance of RPC.Finally,the feasibility and effectiveness of the proposed strategy are verified by simulation and experiment.