A Supercapacitor-Based Method to Mitigate Overvoltage and Recycle the Energy of Pantograph Arcing in the High Speed Railway

Xu, Chi; Chen, Zhu; Cheng, Ka Wai Eric; Wang, Xiaolin; Ho, Ho Fai

doi:10.3390/en12071214

Cited by 4 publications

(6 citation statements)

References 18 publications

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“…� RC Snubbers can inject high amounts of reactive power into the network due to their high capacitance [46]. � The resistive part of the circuit continuously consumes electric energy, even in normal operation [47].…”

Section: Over-voltage Surge Protection Using Resistor Capacitor Snubber Circuitsmentioning

confidence: 99%

“…The bidirectional converter and a supercapacitor system are used to absorb the inductive energy from arcing at the pantograph interface. The circuit configuration in Figure 10 [47] shows the additional converters, the supercapacitor and the pantograph interface arcing as

Q_{a r c}

. The supercapacitor system could also be used to countenance voltage fluctuation of the traction power supply [47], similar to a static var compensator in FACTS.…”

Section: Power Electronics Techniques For Further Consideration—factsmentioning

confidence: 99%

“…The RC snubber provides an alternative return path for the magnetically stored energy in the load side inductance at the opening of the CB [43], but they have the following downsides: RC Snubbers can inject high amounts of reactive power into the network due to their high capacitance [46]. The resistive part of the circuit continuously consumes electric energy, even in normal operation [47]. …”

Section: Over‐voltage Protectionmentioning

confidence: 99%

“…The resistive part of the circuit continuously consumes electric energy, even in normal operation [47].…”

Section: Over‐voltage Protectionmentioning

confidence: 99%

“…Xu, Chen, et al have proposed a super capacitor powered electronic system, which is used to mitigate overvoltages across the traction system electrical equipment due to arcing caused by intermittent OHLE pantograph disconnection. Overvoltages occur at the pantograph when the arcing current is cut off [47]. The bidirectional converter and a supercapacitor system are used to absorb the inductive energy from arcing at the pantograph interface.…”

Section: Power Electronics Techniques For Further Consideration-factsmentioning

confidence: 99%

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Voltage transient management for Alternating Current trains with vacuum circuit breakers

Moore

Schmid

Tricoli

2021

IET Electrical Syst in Trans

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Alternating current power supplies and rolling stock with 25 kV (50 or 60 Hz) and 15 kV (16.7 Hz) traction systems do not have the characteristics and behaviour of a typical three-phase medium-voltage distribution system. Switching inductive loads with a vacuum circuit breaker (VCB) in MV traction systems poses familiar challenges as well as some unique challenges, such as the crossing of phase change neutral sections. Transformers represent highly inductive loads due to their iron core and, thus, the consequences of energizing and disconnecting a transformer and dealing with the energy stored in its inductance must be considered within a system context. The authors of this study consider two transient phenomena associated with switching single-phase, medium voltage, AC traction transformer loads using a VCB on railway rolling stock: (i) switching transients that occur when disconnecting a transformer, particularly if lightly loaded and (ii) pre-ignition and current inrush that occurs when energizing a transformer. Both phenomena can cause reliability problems, requiring increased system maintenance or resulting in premature failures of system components. The authors review the use of controlled switching and other state-of-the-art methods to prevent or limit voltage transients when switching a transformer load by means of a VCB. The effective application of such techniques has been demonstrated in previous research or established in practical applications by manufacturers and electrical distribution network companies.This is an open access article under the terms of the Creative Commons Attribution-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited and no modifications or adaptations are made.

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Section: Over-voltage Surge Protection Using Resistor Capacitor Snubber Circuitsmentioning

confidence: 99%

Q_{a r c}

. The supercapacitor system could also be used to countenance voltage fluctuation of the traction power supply [47], similar to a static var compensator in FACTS.…”

Section: Power Electronics Techniques For Further Consideration—factsmentioning

confidence: 99%

Section: Over‐voltage Protectionmentioning

confidence: 99%

“…The resistive part of the circuit continuously consumes electric energy, even in normal operation [47].…”

Section: Over‐voltage Protectionmentioning

confidence: 99%

Section: Power Electronics Techniques For Further Consideration-factsmentioning

confidence: 99%

See 3 more Smart Citations

Voltage transient management for Alternating Current trains with vacuum circuit breakers

Moore

Schmid

Tricoli

2021

IET Electrical Syst in Trans

View full text Add to dashboard Cite

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Present and Future of Supercapacitor Technology Applied to Powertrains, Renewable Generation and Grid Connection Applications

et al. 2021

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Energy storage systems (ESS) are becoming essential as a solution for troublesome industrial systems. This study focuses on the application of a type of ESS, a high-power technology known in the literature as supercapacitors or electric double layer capacitors (EDLC). This technology has had a huge impact during the last decade on research related to the electric traction drives, renewable sources and powergrids. Related to this aspect, this paper summarizes the most relevant scientific publications in the last five years that study the use of supercapacitor technology (SCs) in electric traction applications (drives for rail vehicles and drives for road vehicles), generation systems for renewable energy (wind, solar and wave energy), and connection systems to the electric grid (voltage and frequency regulation and microgrids). The technology based on EDLC and the practical aspects that must be taken into account in the op-eration of these systems in industrial applications are briefly described. For each of the aforementioned applications, it is described how the problems are solved by using the energy storage technology, drawing the solutions proposed by different authors. Special attention is paid to the control strategies when combining SCs with other technologies, such as batteries. As a summary, some conclusions are collected drawn from the publications analyzed, evaluating the aspects in which it is necessary to conduct further research in order to facilitate the integration of EDLC technology.

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Sizing and Performance Analysis of Hydrogen- and Battery-Based Powertrains, Integrated into a Passenger Train for a Regional Track, Located in Calabria (Italy)

et al. 2022

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In order to decarbonize the rail industry, the development of innovative locomotives with the ability to use multiple energy sources, constituting hybrid powertrains, plays a central role in transitioning from conventional diesel trains. In this paper, four configurations based on suitable combinations of fuel cells and/or batteries are designed to replace or supplement a diesel/overhead line powertrain on a real passenger train (the Hitachi Blues) tested on an existing regional track, the Catanzaro Lido–Reggio Calabria line (Italy), managed by Trenitalia SpA. (Italy). The configurations (namely battery–electrified line, full-battery, fuel cell–battery–electrified line, and fuel cell–battery) are first sized with the intention of completing a round trip, then integrated on board with diesel engine replacement in mind, and finally occupy a portion of the passenger area within two locomotives. The achieved performance is thoroughly examined in terms of fuel cell efficiency (greater than 47%), hydrogen consumption (less than 72 kg), braking energy recovery (approximately 300 kWh), and battery interval SOC.

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A Supercapacitor-Based Method to Mitigate Overvoltage and Recycle the Energy of Pantograph Arcing in the High Speed Railway

Cited by 4 publications

References 18 publications

Voltage transient management for Alternating Current trains with vacuum circuit breakers

Voltage transient management for Alternating Current trains with vacuum circuit breakers

Present and Future of Supercapacitor Technology Applied to Powertrains, Renewable Generation and Grid Connection Applications

Sizing and Performance Analysis of Hydrogen- and Battery-Based Powertrains, Integrated into a Passenger Train for a Regional Track, Located in Calabria (Italy)

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