Railway Power Supply System using Modular Multilevel Converter with Droop Characteristics

Vijaykumar, Y N; Vemulapati, Venkatasupura; Visali, N.; Raju, K.

doi:10.1109/iceca49313.2020.9297599

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…An advanced co-phase power supply system based on a three-phase to single-phase power electronic converter has been proposed in [152] to link all catenaries from different substations, removing all NS. As shown in Figure 14c, the traction substation has a step-down transformer and a step-up transformer on the input and on the output sides, respectively.…”

Section: Power Supply Systemsmentioning

confidence: 99%

A Comprehensive Review of Power Converters for E-Mobility

Nkembi

Cova

Sacchi³

et al. 2023

Energies

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The penetration of electric vehicles is becoming more and more widespread and recently electric buses and trains are fetching the attention of researchers and developers. In this review, we examine the charging systems applied to the fast charging of electric vehicles and buses as well as the charging strategies, mainly applied to electric buses. We also briefly delve into power topologies for a more electrified railway system where we discuss their different supply systems as well as their motor drive systems. Problems and charge challenges for electric buses and trains are discussed too.

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Section: Power Supply Systemsmentioning

confidence: 99%

A Comprehensive Review of Power Converters for E-Mobility

Nkembi

Cova

Sacchi³

et al. 2023

Energies

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“…Locomotives are fed by the single-phase traction transformer through catenary supply. At present Indian traction systems implement phase splitting or shifting methods for voltage balancing in each phase [2]. In phase shifting method, if the first traction substation collects power from one phase then the successive substation will collect power from another phase in sequence manner and this process repeats for each substation coming along the power line [3].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Multi-Modular Converter with Droop characteristics for High Speed Railway Traction System

Vemulapati¹,

Vijaykumar²,

Visali³

2021

CVRJST

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Multi Modular Converters (MMC) plays a significant role in high voltage power transmission networks due to its high scalability and modularity characteristics. MMC converters produce better efficiency & show superiority in harmonic performance in high voltage applications like HVDC and high speed AC-Traction power supply systems. Its bidirectional operation also aided to get high installation reliability comparatively. The complicated power quality problems such as voltage fluctuations, Harmonic issues and reactive power problems of railway tracks due to the rapid movement of the locomotives need to be mitigated. The loss of speed is caused due to the neutral sections (NS) which are present throughout the power line. It is necessary that the neutral sections should be eradicated especially for high speed railway networks. In this paper, a new traction power transmission network which comprises zero NS and comparatively low power quality problems is designed. Droop control strategy is implemented to improve power transfer capability between the two adjacent traction substations. The implementation of MMC with parallel converter concept using the DSP processor is executed for low voltage as a prototype model. The results obtained are confirmed that the proposed system is very much suitable for high speed railway networks.

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“…Nowadays speed, reliability and standard power quality are the essential parameters in case of high speed railway [1]. Mainly the power supply system for locomotives has to be designed such a way that the system will satisfy the fore mentioned parameters.…”

Section: Introductionmentioning

confidence: 99%

Prototype Model for High Speed Railway Power Supply System Suitable for Indian Traction Sub Stations using Multi Modular Converter

Vemulapati¹

2021

TURCOMAT

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As on 2020, India does not have any globally proven railway lines running with high-speed standards as above 250 km/h. Indian Railways looking at the prospect of high speed rail networks also known as bullet rail network in India. With the present Indian traction supply system which is based on the phase splitting or phase shifting method is not suitable for the high speed railway network unless we eliminate neutral sections as well as mitigating the power quality issues such as voltage unbalance, harmonics and high reactive power drawn from the utility grid. In this paper, Co-phase traction power supply system with zero neutral sections is proposed. Modular multilevel converter based three phase to single phase catenary system through a DC Link has been designed, simulated and laboratory prototype is made. A MATLAB simulation of the suggested method and droop characteristics based on load sharing between the two single phase parallel inverters had executed. The obtained results were satisfactory and shows that the proposed system is very much suitable for high speed railway.

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Railway Power Supply System using Modular Multilevel Converter with Droop Characteristics

Cited by 7 publications

References 14 publications

A Comprehensive Review of Power Converters for E-Mobility

A Comprehensive Review of Power Converters for E-Mobility

Implementation of Multi-Modular Converter with Droop characteristics for High Speed Railway Traction System

Prototype Model for High Speed Railway Power Supply System Suitable for Indian Traction Sub Stations using Multi Modular Converter

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