Review of Recent Control Strategies for the Traction Converters in High-Speed Train

Tasiu, Ibrahim Adamu; Liu, Zhigang; Wu, Siqi; Yu, Wenqian; Al-Barashi, Majid M.; Ojo, Joseph Olorunfemi

doi:10.1109/tte.2022.3140470

Cited by 42 publications

(23 citation statements)

References 125 publications

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“…Furthermore, the proposed method is also compared here with the selective harmonics elimination (SHE) [56,57], which can eliminate selective harmonics based on the control system, hence there is no need to add the resonant tank. However, SHE is limited to off-line calculations, requires a larger lookup table at a low fundamental frequency, and eliminates lower order harmonics to boost successive high-level harmonics [58][59][60][61]. In contrast, the proposed method is easy to implement and can achieve the same effect as the SHE at the low-order harmonics.…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…X i is constituted by the outputs of the previous layer and a N ×1 bias vector with all elements being set to 1, i.e. X i = Y i−1 [1] N ×1 . I (i) is the number of the inputs of layer i, which is also equals to the number of neurons of the previous layer, i.e.…”

Section: ε (N )]mentioning

confidence: 99%

“…Meanwhile, railway electrification has attracted much attention in recent years as a key part of the overall transportation decarbonization effort. Given the landscape of a significant increase in traction energy demand and the challenges of the overall decarbonization targets, it is vital to guarantee the traction power quality and enhance the stability of the power supply system [1].…”

Section: Introductionmentioning

confidence: 99%

Thermal Constrained Energy Optimization of Railway Cophase Systems With ESS Integration—An FRA-Pruned DQN Approach

Xing

2023

IEEE Trans. Transp. Electrific.

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“…After applying these design procedures, the parameters of the fully integrated T-LCL, separated T-LCL, LCL, and L filters can be listed in Table 2. Moreover, a similar control system to that provided in [31,33,36,49,50] may be used for the traction converter with the proposed filter, so it will not be explored herein. The verification results will be given in Section 4 to prove the presented filter design validity.…”

Section: Modelling and Parameter Design Of Fully Integrated T-lcl Filtermentioning

confidence: 99%

“…Because of this, the resonant trap is unnecessary. Nevertheless, SHE can only be used for offline computations, necessitating bigger lookup tables at lower fundamental frequencies and attenuating loworder harmonics to amplify subsequent high-order harmonics [36][37][38][39]. On the other hand, the presented approach is simple and can accomplish the same impact at lower harmonics as the SHE.…”

Section: Introductionmentioning

confidence: 99%

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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Review of Recent Control Strategies for the Traction Converters in High-Speed Train

Cited by 42 publications

References 125 publications

Magnetic integrated LLCL filter with resonant frequency above Nyquist frequency

Magnetic integrated LLCL filter with resonant frequency above Nyquist frequency

Thermal Constrained Energy Optimization of Railway Cophase Systems With ESS Integration—An FRA-Pruned DQN Approach

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

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