基于电压补偿分量注入的单相级联H桥整流器载波调制与电容电压平衡方法

发布时间：2017-12-28 09:33

本文关键词：基于电压补偿分量注入的单相级联H桥整流器载波调制与电容电压平衡方法　出处：《中国电机工程学报》2015年12期 　论文类型：期刊论文

【摘要】：无工频牵引变压器技术是实现高速列车轻量化的手段之一。该文首先分析了无工频变压器电力牵引传动系统前端级联H桥整流器的工作原理,以及开关状态和网侧电流对直流侧电容充放电的影响。针对级联H桥整流器电容电压平衡问题,为了实现负载严重不对称情况下直流侧电容电压快速平衡的控制目标,以传统的载波移相脉宽调制方法为基础,提出了一种基于电压补偿分量注入的载波移相脉宽调制算法。考虑负载不平衡度很大的恶劣情况,对该算法的电压补偿分量进行设计与定量计算,并针对该算法多个H桥级联拓扑的应用进行了理论扩展。计算机仿真和半实物实验都验证了该算法的有效性和正确性。
[Abstract]:The technology of no power frequency traction transformer is one of the means to realize the lightening of high speed trains. This paper first analyzes the working principle of cascaded H bridge rectifier without power frequency transformer, and the influence of switch state and grid side current on DC side capacitance charging and discharging. Aiming at the problem of cascaded H bridge rectifier capacitor voltage balance, in order to achieve the goal of serious case of asymmetric load control of DC capacitor voltage balance fast, the carrier phase shifted pulse width modulation method based on traditional, proposed a carrier phase shifted pulse width modulation algorithm voltage compensation based on component injection. Considering the severe condition of load imbalance, the voltage compensation component of the algorithm is designed and calculated quantitatively, and the application of multiple H bridge cascaded topology is theoretically extended. The effectiveness and correctness of the algorithm are verified by computer simulation and hardware in the loop experiment.
【作者单位】：磁浮技术与磁浮列车教育部重点实验室(西南交通大学);
【基金】：国家自然科学基金项目(51207131,51277153) 中央高校基本科研业务费专项资金(2682013ZT19,2682013CX017) 国家高铁联合重点基金项目(U11344205)~~
【分类号】：U271.91;TM461
【正文快照】： 算法。考虑负载不平衡度很大的恶劣情况,对该算法的电压补偿分量进行设计与定量计算,并针对该算法多个H桥级联拓扑的应用进行了理论扩展。计算机仿真和半实物实验都验证了该算法的有效性和正确性。0引言动力分散型高速动车组要求具备功率大、轴重轻、体积小的特性,因此,笨重、

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