电网技术2018，Vol.42Issue(5)：1620-1627,8.DOI:10.13335/j.1000-3673.pst.2017.2852
铁路功率调节器的稳定性及其控制策略研究
Research on Stability and Control Strategy of Railway Power Conditioner
江友华 1刘雪莹 1赵乐 2王振邦 3曹以龙1
作者信息
- 1. 上海电力学院 电子与信息工程学院,上海市 杨浦区 200090
- 2. 上海市电力公司电力研究院,上海市 杨浦区 200090
- 3. 国网德州供电公司,山东省 德州市 253000
- 折叠
摘要
Abstract
Because railway power conditioner is a large power grid system, which switching frequency is relatively low, and output effect of single inductance type L filter is not very ideal. Usually LCL filter is adopted, but it increases system order, adversely affecting system stability. This paper focuses on the stability and proposes a new control strategy. Firstly, mathematical model of railway power regulator based on LCL filter is established, and the stability of characteristic equation and current feedback selection of the mathematical model are studied. Secondly, a quasi-resonant controller strategy is proposed, aiming at the shortcoming of traditional PI regulator that range of parameters is narrow, stability margin is low, and system resonance caused by LCL filter cannot be effectively suppressed. Finally, correctness of theoretical analysis and the algorithm is verified with simulation and experiment.关键词
铁路功率调节器/LCL滤波器/准谐波控制器/稳定性分析Key words
railway power conditioner/LCL filter/quasiharmonic controller/stability analysis分类
信息技术与安全科学引用本文复制引用
江友华,刘雪莹,赵乐,王振邦,曹以龙..铁路功率调节器的稳定性及其控制策略研究[J].电网技术,2018,42(5):1620-1627,8.
