Line current harmonics of three‐level neutral‐point‐clamped electric multiple unit rectifiers: analysis, simulation and testing

Song, Kejian; Wang, Mingli; Agelidis, Vassilios G.; Wang, Hui

doi:10.1049/iet-pel.2013.0683

Cited by 28 publications

(16 citation statements)

References 16 publications

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“…However, the interleaved 4QCs, operating under phase-shifted pulse-width modulation (PS-PWM), still generate a fixed spectrum containing a relatively high amount of sideband harmonics located around the multiples of the carrier frequency. If some of the injected current harmonics, generated by the PWM converters, coincide with the resonant frequency of the traction power supply system (TPSS), a resonance will be prone to be stimulated [10], [11]. When a resonance occurs, amplified resonant voltage and current appear in the TPSS, resulting in supply voltage distortion, interference with adjacent communication lines, erroneous operation of protective devices, or even damaging in some high-voltage devices [12], [13].…”

Section: A Resonance In Traction Power Supply Systemsmentioning

confidence: 99%

Windowed SHE-PWM of Interleaved Four-Quadrant Converters for Resonance Suppression in Traction Power Supply Systems

Song

Konstantinou

Wang

et al. 2017

IEEE Trans. Power Electron.

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AC electric locomotives that use a number of interleaved four-quadrant converters (4QCs) generate high frequency switching harmonics which may stimulate certain resonances in traction power supply systems (TPSSs). A windowed selective harmonic elimination pulse-width modulation (SHE-PWM) method is proposed to suppress such resonances. Owing to the windowed design and the precalculated solutions, the proposed method covers the wide potential resonant frequency range and addresses the resonant frequency variation while keeping the low switching frequency of the traction converters. The proposed windowed SHE-PWM is fully tested with a closedloop controller in a simulation model with the TPSS and the ac electric locomotive. Comparative simulation results show that the windowed SHE-PWM is an effective alternative that overcomes the resonance suppression limitations of the conventional phase-shifted PWM (PS-PWM). The performance of proposed windowed SHE-PWM on an experimental equivalent resonant circuit is further evaluated and compared with PS-PWM. Both simulation and experimental results verify the effectiveness and feasibility of the proposed method.

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Section: A Resonance In Traction Power Supply Systemsmentioning

confidence: 99%

Windowed SHE-PWM of Interleaved Four-Quadrant Converters for Resonance Suppression in Traction Power Supply Systems

Song

Konstantinou

Wang

et al. 2017

IEEE Trans. Power Electron.

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“…The model of the train is often simplified as a four-quadrant converter (4QC). It is usually represented by a constant current model for harmonic studies [7], [8]. The impedance of the 4QC will affect the traction network analysis [9].…”

Section: Introductionmentioning

confidence: 99%

Train Impedance Reshaping Method for Suppressing Harmonic Resonance Caused by Various Harmonic Sources in Trains-Network Systems With Auxiliary Converter of Electrical Locomotive

et al. 2019

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With the development of electrified railway, harmonic resonance accidents occur from time to time. Based on the mechanism of resonance, a harmonic resonance suppression radical method by impedance reshaping is proposed. Thus, the equivalent impedance of the train position is significantly reduced. Compared with the traditional method of improving harmonic current, this method of impedance reshaping can not only suppress the resonance caused by its own harmonic, but also suppress the resonance caused by other trains or other unknown harmonic sources. Harmonic impedance of the train in the resonant frequency is reshaped by detecting the resonance voltage and controlling the auxiliary converter harmonic current. The resonance identification and parameter settings of the impedance reshaping control are also discussed. The proposed harmonic resonance suppression strategy is fully tested with an auxiliary converter control in a simulation trains-network system model. The performance of the proposed strategy is further evaluated on the experimental platform. Both the results verify the effectiveness and feasibility of the proposed strategy. The application of SiC devices makes it effective to suppress the resonance of thousands of hertz. The experiment was validated in two cases. One is the resonance caused by the harmonic current of the train itself. The second is the resonance caused by the harmonic current of trains in other locations. In both cases, the train using impedance reshaping method can ensure that the resonance of its position is effectively suppressed.

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“…This gain is more effective with the developed power electronics technology. With new research and studies, new traction force converters, various electric equipment used in railway vehicles also undergo a change [17][18][19][20]. The single-line scheme of the traction force supply diagram of an AC supplied railway is displayed in Figure 2.…”

Section: Introductionmentioning

confidence: 99%

Comparison of ANN and ANFIS Methods for the Voltage-Drop Prediction on an Electric Railway Line

Kocaarslan¹,

Akçay²,

Akgündoğdu³

et al. 2018

IU-JEEE

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Railway electrification systems are designed with regard to the operating data and design parameters. The minimum voltage rating required by traction during the operation should be provided. The maximum voltage drop on a line determines the minimum traction voltage. This voltage should be maintened within certain limits for the continuity of operation. In this study, the maximum voltage drop generated via traction was determined using artificial neural network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) for a 25-kV AC-supplied railway. The voltage drop on line was calculated with regard to the operating data using ANN and ANFIS. ANN and ANFIS were explained, and the results were compared. The Levenberg-Marquardt (LM) algorithm was used for the ANN model. The LM algorithm is preferred because of the speed and stability it provides for the training of ANNs. The data created for one-way supply status were examined for simulation.

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Line current harmonics of three‐level neutral‐point‐clamped electric multiple unit rectifiers: analysis, simulation and testing

Cited by 28 publications

References 16 publications

Windowed SHE-PWM of Interleaved Four-Quadrant Converters for Resonance Suppression in Traction Power Supply Systems

Windowed SHE-PWM of Interleaved Four-Quadrant Converters for Resonance Suppression in Traction Power Supply Systems

Train Impedance Reshaping Method for Suppressing Harmonic Resonance Caused by Various Harmonic Sources in Trains-Network Systems With Auxiliary Converter of Electrical Locomotive

Comparison of ANN and ANFIS Methods for the Voltage-Drop Prediction on an Electric Railway Line

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