Modular cascaded SMES converter and its total fraction passivity-based power control strategy

被引：0
作者：
Lei Y. [1 ]
Liu H. [1 ]
Zhu Y. [1 ]
Lin X. [2 ]
机构：
[1] School of Electrical Engineering, Sichuan University, Chengdu
[2] State Grid Sichuan Electric Power Corporation Chengdu Power Supply Company, Chengdu
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2020年 / 40卷 / 08期
关键词：
Cascaded SMES; Electric converters; Passivity-based controller; Port-controlled Hamilton model; Power control; Scalable;
D O I：
10.16081/j.epae.202007029
中图分类号：
学科分类号：
摘要：
In order to realize the large-scale scalable application of SMES(Superconducting Magnetic Energy storage System) and improve the dynamic performance and robustness of the control system, the circuit topology of cascaded SMES converter is improved, and the total fraction power control strategy based on passivity-based controller is designed. The second-order generalized integrator is used to construct the virtual axis to realize the coordinate transformation of the single-phase circuit. It is proved that the passive system maintains the characteristics of the port-controlled Hamilton model structure after the feedback interconnection. Therefore, the control strategy is designed at the AC and DC sides respectively, which reduces the complexity of the control design. The total fraction power control strategy is proposed to realize the independent control of the total system power and the power of each module. The total fraction power control strategy is proposed to realize the independent control of the total system power and the power of each module. The passivity-based controllers are designed at the AC and DC sides respectively to improve the dynamic performance and stability of the system control. Simulation analysis verifies the effectiveness of the cascaded SMES converter and its total fraction passivity-based control strategy. The modularity of the system allows flexible expansion and independent control of the power of each superconducting magnet with faster response speed, smaller overshoot and better grid-connected current quality. © 2020, Electric Power Automation Equipment Press. All right reserved.
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页码：54 / 61
页数：7
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