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FPGA-based digital implementation of Flexible Power Control for Three-phase to Single-phase MMC-based Advanced Co-phase Traction Power Supply System

引用

Journal of Modern Power Systems and Clean Energy 2023年第6期11卷 2015-2027页

作者： Jiangpeng Yang Hongjian Lin Haotian Zhu Zeliang Shu Lan Ma Changsong Cai Pengcheng Zhang Li He Ruoyu Li Shasha Song Josep M.Guerrero National Rail Transportation Electrification and Automation Engineering Technology Research Center Chengdu 611756China School of Electrical Engineering Southwest Jiaotong UniversityChengdu 611756China IEEE Department of Electrical Engineering City University of Hong KongHong KongChina School of Electrical Engineering and Automation Wuhan UniversityWuhan 430072China Department of Electrical Engineering Tsinghua UniversityBeijing 100084China Department of Energy Technology Aalborg UniversityAalborg 9220Denmark

A three-phase to single-phase modular multilevel converter based advanced co-phase traction power supply(MMC-ACTPS) system is an effective structure to address the concerns of phase splitting and poor power quality of the conventional electrified railway. Due to the large number of MMCACTPS system modules, I/O resources and computing speed have high requirements on processors. Moreover, the module capacitor balance is challenging because the sorting time is too long when the traditional sorting algorithm for voltage balance is used. To solve the above issues, a digital implementation scheme of flexible power control strategy for three-phase to single-phase MMC-ACTPS system based on field programmable gate array(FPGA), which has sufficient I/O resources, has been proposed. Due to the parallel execution characteristics of the FPGA, the execution time of the controller and the modulator can be greatly reduced compared with a digital signal processor(DSP) + FPGA or DSpace. In addition, an improved sorting algorithm is proposed to reduce the sorting time and the implementation steps are analyzed. Finally, simulation and experimental results are presented to demonstrate the effectiveness and correctness of the proposed control strategy.

关键词： Advanced co-phase power traction supply(ACTPS)system modular multilevel converter(MMC) digital implementation flexible power transmission circulating current mitigation

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Transfer function analysis and implementation of active disturbance rejection control

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Control Theory and Technology 2021年第1期19卷 19-34页

作者： Gernot Herbst University of Applied Sciences Zwickau Kornmarkt 108056 ZwickauGermany

To support the adoption of active disturbance rejeetion control(ADRC)in industrial practice,this article aims at improv-ing both understanding and implementation of ADRC using traditional means,in particular via transfer functions and a frequency-domain ***,to enable an immediate comparability with existing classical control solutions,a realizable transfer function implementation of continous-time linear ADRC is ***,a frequency-domain analysis of ADRC components,performance,parameter sensitivity,and tuning method is ***,an exact implementation of discrete-time ADRC using transfer functions is introduced for the first time,with special emphasis on practical aspects such as computational fficiency,low parameter *** windup protection.

关键词： Active disturbance rejection control(ADRC) Frequency domain analysis digital implementation

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