Analysis of electrical characteristics of the four-quadrant converter in high speed train considering pantograph-catenary arcing

Lin, Fei; Wang, Xiaofan; Yang, Zhongping; Liu, Wenzheng; Hao, Ruixiang; Jiao, Jinghai; Yu, Jin

doi:10.1177/0954409715624725

Cited by 3 publications

(8 citation statements)

References 23 publications

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“…The modified control algorithm provides for a ban on turning on the VT2 and VT4 modules after the EMF polarity of TT secondary winding changes in accordance with the logical expression (10). Thanks to the changes made, the duration of negative current pulses and the duration of discharge of the CVC capacitor are significantly reduced.…”

Section: Discussion Of Results Of Studying the Energy Characteristics...mentioning

confidence: 99%

“…The issue of using 4QS converters on modern electric rolling stock and their further improvement are considered in many scientific works [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. One of the main tasks set in these studies were attempts to solve the problem of compensation of higher harmonics and reduction of the level of harmonic current distortions in the power supply system of the electric locomotive based on the improvement of converter control methods and algorithms.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Therefore, studies of processes related to the operation of 4QS converters are currently important and necessary for improving their characteristics. Issues of improving the technical and economic characteristics of 4QS converters are considered in many works [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Technical solutions known today, which ensure the improvement of the energy characteristics of 4QS converters, can be conditionally combined into three main groups:…”

Section: Introductionmentioning

confidence: 99%

“…In works [10,11], the sources of distortions of electric locomotive power supply characteristics are analyzed due to the reverse influence of electric locomotives on the contact network, in particular, due to pantograph switching and the passage of contact inserts by the electric locomotive at the border of the contact network sections. The given analysis is very important for the development of algorithms for the compensation of higher current harmonics in the power supply system of electric rolling stock, however, the authors do not provide in their works a comparative quantitative analysis of the influence of these sources on the contact network of electric locomotives.…”

Section: Introductionmentioning

confidence: 99%

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Improving the energy characteristics of a four-quadrant converter with pulse-width modulation

Dubravin¹,

Tkachenko²,

Morneva

2023

EEJET

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The characteristics of the input energy converter of an electric locomotive with an induction traction electric drive were studied. The efficiency of the 4QS converter has been increased and the level of current harmonic distortions in the power supply system has been reduced. The research resulted in proposals for improving the control algorithm of the input energy converter to improve the traction-energy indicators of the electric drive and reduce the emission of high-frequency harmonics into the contact network. The results were obtained on the basis of simulation modeling of the "traction transformer – 4QS-converter" system on the example of the alternating current electric locomotive DS3 (Dnipro-Simens-3). Modeling of the operation of the 4QS-converter of the electric locomotive was performed for the case of the maximum load of the drive under a traction mode. Two versions of the input converter control algorithm were studied and compared: the basic version of the DS3 electric locomotive and the modified version proposed by us. It was found that in the case of the basic variant of the converter control algorithm, conditions are created at certain time intervals when the capacitor of the constant voltage link on the secondary winding of the traction transformer is discharged under a traction mode. The consequence of this is a decrease in the efficiency factor of the converter and a deterioration of the harmonic distortion factor of the rectified voltage. In the modified algorithm, the discharge time of the capacitor of the constant voltage link on the secondary winding of the traction transformer is significantly reduced and the efficiency of the 4QS converter is increased

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Section: Discussion Of Results Of Studying the Energy Characteristics...mentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving the energy characteristics of a four-quadrant converter with pulse-width modulation

Dubravin¹,

Tkachenko²,

Morneva

2023

EEJET

View full text Add to dashboard Cite

show abstract

“…The speed and torque of traction motor reduces owing to the pantograph disconnection. 27–29 When the traction motor acquires energy again, its speed and torque will restore to the original value. This situation is similar to motor starting process, where the starting current will be 4–7 times of the rated current.…”

Section: Resultsmentioning

confidence: 99%

A pantograph arcing model for electrified railways with different speeds

Gao

Zhang

Wei

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part F:

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Pantograph arcing is an unavoidable phenomenon in electrified railways, which not only causes damage to the carbon strip and the catenary contact line but also results in voltage surge and electromagnetic interference. In recent years, there are more cases of pantograph arcing due to the increase in speed of trains. Therefore, it is essential to understand the basic electrical characteristics of pantograph arcing at different running speeds of trains. In this work, a pantograph arcing model was proposed, which considers the effects of the speed of a train on the arc-dissipated power. An overall electrical model, concerning the traction power system and the traction drive system, was further established. The results indicated that the running speed of trains significantly influenced the arcing voltage, duration of arcing, and the zero-crossing time. A qualitative relation between the average power of the arc and the speed of the train was also presented. Finally, field tests were carried out, and comparisons between the field testing data and the calculated results were made, which validate the accuracy of the developed model.

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The Electrical Behaviour of Railway Pantograph Arcs

Mariscotti

2023

Energies

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Electric arcing is an unavoidable consequence of the current collection process by sliding contact in railways and metros, and in general in many electrified transportation systems (ETSs). The most relevant consequences in an electrical perspective are: the occurrence of transients triggering resonant behaviour and transient responses, reduction of the energy efficiency of the system, conducted and radiated disturbance, in particular for the new radio systems widely employed for signalling and communication. The involved parameters are many (type of materials, current intensity, DC and AC supply, relative speed, temperature), as well as the studied characteristics (arc instability and lifetime, dynamic behaviour, electrical system response, radiation efficiency and coupling to external radio systems). This work reports the state of the art in arc modelling, arcing experimental characterisation, interaction with the supply system, radiated emissions and disturbance to radio systems, providing a complete description of phenomena and of reference data, critically discussing similarity and differences between sources. Proposed arc models are many with different assumptions and simplifications for various applications, so that a critical review and discussion are a necessity, considering the many different approaches and not-so-obvious applicability. The comparison with experimental results highlights unavoidable discrepancies, also because of intrinsic arc variability and for the many involved parameters and operating conditions. The impact of the arc as embedded in the railway system is then considered, speaking of conducted and radiated phenomena, including interference to radio communication systems and arc detection. The most prominent effect for conducted emissions is the excitation of system resonances, including the LC filters onboard rolling stock and substations in DC railways, with consequences for disturbance and energy efficiency, and this is discussed in detail. Conversely, for high frequency emissions, the attenuation along the line circuit is significant and the effective distance of propagation is limited; nevertheless radiated electromagnetic field emissions are a relevant source of disturbance for radio systems within the ETS premises and outside (e.g., at airports). The published approaches to quantify performance reduction are discussed with emphasis on experimental methods.

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Analysis of electrical characteristics of the four-quadrant converter in high speed train considering pantograph-catenary arcing

Cited by 3 publications

References 23 publications

Improving the energy characteristics of a four-quadrant converter with pulse-width modulation

Improving the energy characteristics of a four-quadrant converter with pulse-width modulation

A pantograph arcing model for electrified railways with different speeds

The Electrical Behaviour of Railway Pantograph Arcs

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