| 引用本文: | 王浩宇,张雨婷,张 乔,刘志刚.一种基于滑模观测器的动车组整流器控制策略研究[J].电力系统保护与控制,2022,50(22):81-91.[点击复制] |
| WANG Haoyu,ZHANG Yuting,ZHANG Qiao,LIU Zhigang.A control strategy for EMUs rectifier based on sliding mode observer[J].Power System Protection and Control,2022,50(22):81-91[点击复制] |
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| 摘要: |
| 为改善车网耦合系统在多工况运行下的直流电压抗干扰能力，提出了一种基于滑模观测器的动车组网侧整流器滑模控制策略(sliding mode control method based on sliding mode observer, SMO+SMC)。首先，通过建立CRH3型动车组在dq坐标系下的数学模型，推导了滑模观测器的设计方程。接着，利用滑模观测器实时观测牵引电机输出功率后间接得到整流器直流侧电流，将滑模观测器的输出提供给滑模控制的外环电压控制模块，实现滑模观测器和滑模控制的结合。最后，将PI、滑模控制和SMO+SMC策略分别应用于CRH3型动车组仿真模型，对多工况下整流侧直流电压控制效果进行分析验证，并基于HIL小步长实时仿真测试平台进行了半实物实验。仿真和实验结果表明，SMO+SMC策略可以提高动车组运行速度改变时的直流电压抗干扰能力和车网耦合运行时网侧电流的稳定性。 |
| 关键词: 电气化铁路 动车组-牵引网耦合系统 多工况运行 滑模观测器 |
| DOI：DOI: 10.19783/j.cnki.pspc.220153 |
| 投稿时间：2022-02-09修订日期：2022-03-25 |
| 基金项目:国家自然科学基金高铁联合基金重点项目资助 (U1434203) |
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| A control strategy for EMUs rectifier based on sliding mode observer |
| WANG Haoyu,ZHANG Yuting,ZHANG Qiao,LIU Zhigang |
| (1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China;
2. Wuxi Rail Construction Design Consulting Co., Ltd., Wuxi 214000, China) |
| Abstract: |
| To improve the DC voltage anti-interference ability of a vehicle-grid coupling system under multi-operating conditions, a sliding mode control strategy of EMUs grid side rectifier based on a sliding mode observer (SMO+SMC) is proposed. First, through building the mathematical model of CRH3 EMUs in a dq coordinate system, the design equation of the sliding mode observer is derived. Then, the sliding mode observer is used to observe the output power of the traction motor in real time, and the voltage control module of the outer loop of the sliding mode control is supplied to realize the combination of the sliding mode observer and the sliding mode control. Finally, PI, sliding mode control and SMO+SMC are applied to the simulation model of CRH3 EMUs. In addition, the DC voltage control effect of the rectifier side under multiple working conditions is analyzed and verified, and then a semi-physical experiment is carried out based on the HIL small step real-time simulation test platform. The simulation and experimental results show that the SMO+SMC strategy can improve the DC voltage anti-interference ability and the stability of grid side voltage and current when multiple vehicles are connected to the grid.
This work is supported by the Key Project of High Speed Rail Joint Foundation of National Natural Science Foundation of China (No. U1434203). |
| Key words: electrified railway EMUs-traction network coupling system multi-condition operation sliding mode observer |
