一种简化型三电平高速铁路功率调节器  

A Simplified Three-level Power Conditioner for High-speed Railway System

作　　者：马伏军[1] 罗安[1] 熊桥坡[1] 孙运宾[1] 邓才波[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南省长沙市410082

出　　处：《电力系统自动化》2012年第16期108-114,共7页Automation of Electric Power Systems

基　　金：国家重点科技攻关项目~~

摘　　要：为了治理电力系统负序、无功和谐波电流等电能质量问题,研究了一种简化型三电平铁路功率调节器,它由1个两相三线制逆变器、2个输出电感和2个单相降压变压器组成。与三相有源电能质量补偿器相比,该调节器只需要一对三电平开关臂,减少了器件数量、降低了装置成本。通过分析两相三线制逆变器的开关控制原理,提出了一种电压外环比例—积分控制和电流内环无差拍控制的双环控制方法。为了实现直流侧动态均压,研究了一种低成本、可靠性高的均压电路,并提出了一种基于电流闭环的均压控制方法。最后,仿真和实验结果验证了所提出补偿结构及方法的正确性。In order to manage the power quality of railway, a simplified three-level railway power regulator is presented. The regulator consists of two-phase three-wire converter, two step-down transformers and two output inductors. Compared with active power quality compensator （APQC）, this regulator only needs a pair of three-level switch arms, which reduces the switch number and the system cost. Base on the switch control mode analysis, a voltage and current dual-loop control is established. It is composed of an outer loop proportional-integral control and an inner loop deadbeat control. To achieve dynamic balance of the DC-link voltage, a voltage-balanced circuit and its control method are researched. Simulation and experimental results verify the correctness of the proposed structure and the control method.

关 键 词：高速铁路 两相三线逆变器 负序补偿 均压电路 电能质量 

分 类 号：TM76[电气工程—电力系统及自动化]