Stationary and on-board storage systems to enhance energy and cost efficiency of tramways

Ceraolo, Massimo; Lutzemberger, Giovanni

doi:10.1016/j.jpowsour.2014.04.070

Cited by 56 publications

(50 citation statements)

References 7 publications

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“…Also Authors have some previous experience in the development of a full electric vehicle with four in-wheel drive motor [3] and more generally on energy recovery during the braking applied to railway systems [4,5].…”

Section: State Of the Artmentioning

confidence: 99%

Design of a hydraulic servo-actuation fed by a regenerative braking system

et al. 2017

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h i g h l i g h t sAn innovative on board hydraulic system fed by a KERS is presented. A complete model of the proposed system is presented. The model is validated on experimental data. a r t i c l e i n f o a b s t r a c tMany conventional truck and working machines are equipped with additional hydraulic tooling or manipulation systems which are usually fed through a mechanical connection with the internal combustion engine, involving a poor efficiency. In particular, this is a common situation for industrial vehicles whose mission profiles involves a relevant consumption of energy by the on board hydraulic systems, respect to the one really needed for only traction purpose. In this work it is proposed an innovative solution based on the adoption of a system aimed to recover braking energy in order to feed an efficient on board hydraulic actuation system. The proposed system is then adopted to a real application, an Isuzu truck equipped with a hydraulic tooling for garbage collection. A prototype of the system has been designed, assembled and tested showing a relevant improvement of system efficiency and the feasibility of the proposed approach. In the paper the proposed solution is presented, showing the simulation models and preliminary validation results including experimental devices assembled to perform the tests.

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Section: State Of the Artmentioning

confidence: 99%

Design of a hydraulic servo-actuation fed by a regenerative braking system

et al. 2017

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“…This can be physically allowed by the presence of a DC/DC converter between the storage and the grid, of the same typology already considered in [5], to activate the energy recovery inside the storage system only when trains along the DC high-speed railway line are present.…”

Section: Storage System Sizingmentioning

confidence: 99%

Regenerative braking in high speed railway applications: Analysis by different simulation tools

Ceraolo

Lutzemberger

Frilli

et al. 2016

2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC)

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Abstract-Technical investigations continuously evaluate the possibility to recover significant amount of braking energy. The application normally involve conventional tramways, characterized by several stops in short-range routes. However, this possibility is becoming more and more attractive also when high-speed trains are considered. In fact, braking energy can be recovered during entry in the station, and delivered later to other trains engaged in starting acceleration. In this work, authors propose an approach based on simplified models performed with object-oriented tools as Modelica or Matlab-Simscape, which easily introduce several advantages in modelling and simulation techniques. The approach has been applied to the preliminary evaluation of one energy storage system installed along a DC line, considering a high-speed train with distributed traction power as the new Italian ETR 1000.

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“…On the other hand, in energy recovery applications, such as regenerative braking [1,2,4,9], or in pulsed load cycling applications [3,5], a high-power charge is required. Therefore, a fast voltage rise occurs and the maximum permissible level is easily reached.…”

Section: Esr Esrmentioning

confidence: 99%

“…Some examples of applications are energy recovery systems [1,2], buffering of energy source fluctuations [7,8], hybrid vehicles [4,9] and others.…”

Section: Introductionmentioning

confidence: 99%

Voltage equalization of an ultracapacitor module by cell grouping using number partitioning algorithm

Oyarbide

Bernal

Molina

et al. 2016

Journal of Power Sources

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Ultracapacitors are low voltage devices and therefore, for practical applications, they need to be used in modules of series-connected cells. Because of the inherent manufacturing tolerance of the capacitance parameter of each cell, and as the maximum voltage value cannot be exceeded, the module requires inter-cell voltage equalization. If the intended application suffers repeated fast charging/discharging cycles, active equalization circuits must be rated to full power, and thus the module becomes expensive. Previous work shows that a series connection of several sets of paralleled ultracapacitors minimizes the dispersion of equivalent capacitance values, and also the voltage differences between capacitors. Thus the overall life expectancy is improved. This paper proposes a method to distribute ultracapacitors with a number partitioning-based strategy to reduce the dispersion between equivalent submodule capacitances. Thereafter, the total amount of stored energy and/or the life expectancy of the device can be considerably improved.

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Stationary and on-board storage systems to enhance energy and cost efficiency of tramways

Cited by 56 publications

References 7 publications

Design of a hydraulic servo-actuation fed by a regenerative braking system

Design of a hydraulic servo-actuation fed by a regenerative braking system

Regenerative braking in high speed railway applications: Analysis by different simulation tools

Voltage equalization of an ultracapacitor module by cell grouping using number partitioning algorithm

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