储能科学与技术 ›› 2019, Vol. 8 ›› Issue (6): 1151-1158.doi: 10.12028/j.issn.2095-4239.2019.0093

• 研究开发 • 上一篇    下一篇

基于MMC的车载超级电容储能系统综合控制策略

杨丰萍, 郑文奇, 金林, 谢梦莎, 刘锋   

  1. 华东交通大学电气与自动化工程学院, 江西 南昌 330013
  • 收稿日期:2019-05-18 修回日期:2019-07-19 出版日期:2019-11-01 发布日期:2019-07-22
  • 通讯作者: 杨丰萍(1967-),女,教授,硕士生导师,主要研究方向为交通信息工程及控制、电力电子与电力传动等,E-mail:596871@qq.com。
  • 作者简介:杨丰萍(1967-),女,教授,硕士生导师,主要研究方向为交通信息工程及控制、电力电子与电力传动等,E-mail:596871@qq.com。
  • 基金资助:
    江西省教育厅科技项目（GJJ160489）。

Integrated control strategy of vehicle supercapacitor energy storage system based on MMC

YANG Fengping, ZHENG Wenqi, JIN Lin, XIE Mengsha, LIU Feng   

  1. School of Electrical and Automation Engineering, East China Jiao tong University, Nanchang 330013, Jiangxi, China
  • Received:2019-05-18 Revised:2019-07-19 Online:2019-11-01 Published:2019-07-22

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摘要： 针对单辆城轨列车在起动、制动过程中对牵引网电压造成冲击从而引起网压不稳定的问题，提出一种基于MMC的车载超级电容储能系统（车载MMC-SCESS），该系统以MMC拓扑结构作为主电路，通过将超级电容储能单元分散接入MMC子模块中，提高系统的控制灵活性与容错性；其次以车载MMC-SCESS的整体结构为研究对象，详细分析其a相桥臂电路工作原理，总结出每个储能子模块的一般工作模式。针对该储能系统主电路结构，提出采用综合控制策略，通过控制超级电容储能单元的充放电状态来实现能量在城轨列车、直流牵引网、超级电容储能系统三者之间流动。最后在Matlab/Simulink中搭建三相五电平车载MMC-SCESS仿真模型，仿真波形验证了储能系统控制策略的可行性。

关键词: 城市轨道交通, 模块化多电平变换器, 超级电容储能系统, 储能单元, 充放电状态, 综合控制策略

Abstract: Aiming at the problem that the single urban rail train impacts the traction network voltage during the starting and braking process and causes the instability of the network voltage, this paper proposes an MMC-based vehicle supercapacitor energy storage system (vehicle MMC-SCESS). The system uses MMC topology as the main circuit and the control flexibility and fault tolerance of the system are improved by dispersing the supercapacitor energy storage unit into the MMC sub-module. Then taking the overall structure of the vehicle MMC-SCESS as the research object, the working principle of the a-phase bridge arm circuit is analyzed in detail, and the general working mode of each energy storage sub-module is summarized. Aiming at the main circuit structure of the energy storage system, an integrated control strategy is proposed. By controlling the charge and discharge state of the supercapacitor energy storage unit, the energy is realized to flow between the urban rail train, the DC traction network, and the super capacitor energy storage system. Finally, a three-phase fivelevel vehicle MMC-SCESS simulation model is built in Matlab/Simulink. The simulation waveform verifies the feasibility of the energy storage system control strategy.

Key words: urban rail transit, modular multilevel converter, supercapacitor energy storage system, energy storage unit, Charge and discharge state, integrated control strategy

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