Fuzzy Observer-Based Control for the Traction Dual Rectifiers in High-Speed Train

Tasiu, Ibrahim Adamu; Liu, Zhigang; Yan, Qixiang; Chen, Hong; Hu, Keting; Wu, Siqi

doi:10.1109/tvt.2020.3047663

Cited by 19 publications

(13 citation statements)

References 48 publications

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“…Furthermore, this approach provides practicality and cost advantages by enabling the model to represent the plant. HIL can save costs over physical verification in various applications, and it is less complex, time‐consuming, and expensive for design modifications [73, 74]. Problems of identification and redesign are convenient with HIL experiments.…”

Section: Resultsmentioning

confidence: 99%

Magnetic integrated LLCL filter with resonant frequency above Nyquist frequency

Al-Barashi

Liu

et al. 2022

IET Power Electronics

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This paper presents a design technique of magnetic integrated LLCL filters for grid-tied inverters. With the proposed design technique, the LLCL filter's resonant frequency can be higher than the Nyquist frequency. Furthermore, the proposed concept was only reported for the LCL filter in the previous research works. In addition, the modulation process will produce dominant switching harmonics for unipolar PWM H-bridge inverters at the double switching frequency. Thus, putting the resonant frequency beyond the Nyquist frequency will increase the stability zone. The proposed design methods maximize the filter inductors' utilization and resist the grid impedance variations under weak grid conditions, depending on the improved stability zone. Comparative simulation and HIL experimental results are presented to confirm the effectiveness of the proposed magnetic integrated LLCL filter design. The HIL experimental results and the simulation results agree well with each other.

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Section: Resultsmentioning

confidence: 99%

Magnetic integrated LLCL filter with resonant frequency above Nyquist frequency

Al-Barashi

Liu

et al. 2022

IET Power Electronics

Self Cite

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“…Moreover, it is practical and cost-effective to use the HIL platform since the models can represent the plants. In various applications, with HIL, it is possible to save the cost versus the physical verifications, as well as time and effort for designing adjustments [60,61]. Furthermore, HIL experiments make it easy to identify and redesign obstacles.…”

Section: Hil Experimental Resultsmentioning

confidence: 99%

“…Due to HIL's capability to offer hazard-free devices as well as a rapid prototyping process in engineering research, this technique has shown great promise for both industry and academia [4,8,31,32,40,50,[59][60][61][62][63][64][65][66][67]. HIL tests could provide a safe test environment when a high-power system is involved, like TPSS.…”

Section: Hil Experimental Resultsmentioning

confidence: 99%

“…HIL tests could provide a safe test environment when a high-power system is involved, like TPSS. In such a case of large systems, with several complex separate models that have fast dynamics or high switching frequency, HIL is an interesting approach that provides the means to validate system design [4,8,40,50,60,62,66]. Moreover, HIL is a widely used modern technology for designing and validating power electronic systems.…”

Section: Hil Experimental Resultsmentioning

confidence: 99%

“…In this process, because of the impossibility of building a real TPSS in the laboratory-scale experiments, it will be cost-effective that the proposed filter is designed and examined using the HIL platform instead of the real filter design, which may come in the next stages. It is worth mentioning that the HIL technology is a very important verification tool for the new system designs and the application of high-voltage large capacity TPSS with tens or even hundreds of megawatts of power because, using this technology, the correctness and the effectiveness of the studied systems can be FIGURE 14 Settings for HIL experiments examined without paying the cost of real system design [4,8,40,50,60,62,66]. In this paper, the proposed filter is modelled using the standard model in the HIL technology.…”

Section: Hil Experimental Resultsmentioning

confidence: 99%

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Enhancing power quality of high‐speed railway traction converters by fully integrated T‐LCL filter

Al-Barashi

Meng

Liu

et al. 2022

IET Power Electronics

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Modulating the traction converters produces current harmonics at the switching frequencies and their multiples. These harmonics should be minimized to meet the network specifications. The LC‐trapped filters, tuned to these frequencies, can easily meet this requirement, but the existing applicable trap filters have not been studied with the traditional traction system topologies. Thus, this paper presents a trapped LCL filter with an LC resonator on the converter side, called a fully integrated T‐LCL filter, for the traction power supply system. The model and analysis reported in this research demonstrate that the presented filter has several advantages, which can be summarized by: reducing the size by winding many coils through magnetic integration, attenuating the switching frequency and its multiple harmonics that reduce the current total harmonic distortion, assuring durability against the filter parameters differences, and preserving system stability under transient conditions. The proposed filter can become a promising trap filter based on these advantages. Simulation models of an ac/dc single‐phase traction rectifier with the proposed filter were created and tested in MATLAB/Simulink, verifying its superiority. Finally, the filter is validated by performing hardware‐in‐the‐loop experiments.

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