Speed-Based State-of-Charge Tracking Control for Metro Trains With Onboard Supercapacitors

Iannuzzi, Diego; Tricoli, Pietro

doi:10.1109/tpel.2011.2167633

Cited by 148 publications

(47 citation statements)

References 31 publications

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“…The traction power variable is dependent on the weight; thus, the revised formula should transform this value. In (8), the other values can be used as parameters in the calculation process except the weight and acceleration. Eq.…”

Section: Weight Calculation Processmentioning

confidence: 99%

“…Through integration with a supercapacitor, which has a fast response characteristic, huge amount of wasted regenerative energy can be reused in other phases in largescale railway power networks [5][6][7]. Several studies that utilized regenerative energy through ESS integration have been conducted, namely, ESS types, control strategies, and charging algorithms [8][9][10]. Regarding the installation site, equipping the vehicles or the substation with an ESS has been primarily considered.…”

Section: Introductionmentioning

confidence: 99%

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Development of a Novel Charging Algorithm for On-board ESS in DC Train through Weight Modification

Jung¹,

Kim²,

Kang³

et al. 2014

Journal of Electrical Engineering and Technology

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-Owing to the reduction in the peak power of a DC railway subsystem, many studies on energy storage system (ESS) applications have received attention. Each application focuses on improving the efficiency and addressing regulation issues by utilizing the huge regenerative energy generated by braking-phase vehicles. The ESS applications are widely divided into installation on a vehicle or in a substation, depending on the target system characteristics. As the main purpose of the ESS application is to reduce the peak power of starting-phase vehicles, an optimized ESS utilization can be achieved by the operating at the highest peak power section. However, the weight of an entire vehicle, including those of the passengers, continuously changes during operation; thus, considering the total power consumption and the discharging point is difficult. As a contribution to the various storage device algorithms, this study deals with ESS on board vehicles and introduces an ESS operating plan for peak-power reduction by investigating the weight of a train on a real-time basis. This process is performed using a train-performance simulator, and the simulation accuracy can be increased because the weight in each phase can be adopted in the simulation.

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Section: Weight Calculation Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of a Novel Charging Algorithm for On-board ESS in DC Train through Weight Modification

Jung¹,

Kim²,

Kang³

et al. 2014

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

show abstract

“…This is typically useful for studies of on-vehicle [5][6][7] and railside energy storage [5,8,9]. When is it optimal to charge/discharge?…”

Section: Contributionmentioning

confidence: 99%

An SOS2-based moving trains, fixed nodes, railway power system simulator

Abrahamsson¹,

Söder²

2014

WIT Transactions on the Built Environment

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This paper presents and proposes an optimization model for railway power supply system simulations. It includes detailed power systems modeling, train movements in discretized time considering running resistance and other mechanical constraints, and the voltage-drop-induced reduction of possible train tractive forces. The model has a fixed number of stationary power system nodes. The proposed model uses SOS2 (special ordered sets of type 2) variables to distribute the train loads to the two most adjacent power system nodes available.The impact of the number of power system nodes along the contact line and the discretized time step length impacts on model accuracy and computation times are investigated.The program is implemented in GAMS (General Algebraic Modeling System). Experiences from various solver choices are also presented. The train traveling times are minimized in the example. Other studies could, e.g. consider energy consumption minimization. The numerical example is representative for a Swedish non-centralized, rotary-converter fed railway power supply system. The proposed concept is however generalizable and could be applied for all kinds of moving load power system studies.

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“…In the case of installation on the substations, there is a problem of high wiring losses in the process of charging and discharging. In the case of installing a regenerative inverter, high quality regenerative power cannot be supplied due to the harmonics generated from the inverter [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A Study on Peak Power Reduction using Regenerative Energy in Railway Systems through DC Subsystem Interconnection

Jung¹,

Lee

Kim³

et al. 2013

Journal of Electrical Engineering and Technology

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-Owing to the consistent increase in energy efficiency issues, studies for improving regenerative energy utilization have been receiving attention in the Urban DC railway systems, where currently, the utilization of regenerative energy is low due to the lack of a specific plan for using this energy. The regenerative energy in railway systems has a low efficiency problem which results in the increase of the catenary voltage and a possibility to create problems to the electrical devices connected to the system. This paper deals with the power integration of large urban railway subsystems to improve regenerative energy utilization where the railway subsystems are integrated with other railway subsystems to improve the energy efficiency. Through the case studies, to find the realistic effect of integrated operation, the Seoul Metro subsystems, namely Line 5 and Line 7, has been applied. Also, evaluation for the electricity cost saving has been performed by using KEPCO electricity cost table.

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Speed-Based State-of-Charge Tracking Control for Metro Trains With Onboard Supercapacitors

Cited by 148 publications

References 31 publications

Development of a Novel Charging Algorithm for On-board ESS in DC Train through Weight Modification

Development of a Novel Charging Algorithm for On-board ESS in DC Train through Weight Modification

An SOS2-based moving trains, fixed nodes, railway power system simulator

A Study on Peak Power Reduction using Regenerative Energy in Railway Systems through DC Subsystem Interconnection

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