MMC-RPC的功率同步平坦控制策略  

Power synchronization flatness control strategy of MMC-RPC

作　　者：宋平岗 周鹏辉 肖丹 杨声弟 SONG Pinggang;ZHOU Penghui;XIAO Dan;YANG Shengdi(School of Electrical and Automation Engineering,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学电气与自动化工程学院

出　　处：《电力自动化设备》2019年第11期145-151,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51367008)~~

摘　　要：为解决牵引供电系统中电能质量差、抗扰动性弱以及常规解耦矢量控制中短路比对锁相环参数的影响问题,在功率同步控制的基础上,结合电流矢量控制和微分平坦理论,提出一种适用于模块化多电平换流器型铁路功率调节器的功率同步平坦控制策略。功率同步环将模块化多电平换流器模拟成同步发电机,为牵引网提供惯性支撑。基于微分平坦的电流环由前馈控制和动态误差反馈2个部分组成,能有效限制短路电流,提高了电流环的动态响应特性。在MATLAB/Simulink中搭建仿真系统,通过与功率同步控制策略进行对比,并在3种不同工况下进行仿真,仿真结果验证了该控制策略响应速度快且精度高。In order to solve the problems of poor power quality,poor resistance to disturbance,influence of short circuit ratios on phase locked loop parameters in conventional decoupling vector control in traction power system.On the basis of power synchronization control strategy,combined with current vector control and differential flatness theory,a power synchronous flatness control strategy based on modular multilevel converter railway static power conditioner is proposed.In order to provide inertial support to traction network,power synchronization loop simulate MMC as a synchronous generator.The current loop based on three differential flatness consists of feed forward control and dynamic error feed-back control,which can limit the short circuit current effectively and improve its dynamic characteristics.Finally,the simulation system considering different conditions is built in MATLAB/Simulink,simulative results verify rapid response and high-precision of the proposed strategy compared with power synchronization control strategy.

关 键 词：模块化多电平换流器 铁路功率调节器 V/v牵引变压器 功率同步控制 微分平坦理论 锁相环 

分 类 号：TM46[电气工程—电器] U223[交通运输工程—道路与铁道工程]