Investigation of control strategies for hybrid energy storage systems in hybrid electric vehicles

Kohler, Tom P.; Buecherl, Dominik; Herzog, Hans-Georg

doi:10.1109/vppc.2009.5289686

Cited by 44 publications

(21 citation statements)

References 22 publications

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“…For the reasons stated above, this alternative is preferred in traction applications. However some authors argue against this topology due to the weight of two power converters [13] and the extra cost.…”

Section: Topologies Used For Hess Integrationmentioning

confidence: 99%

“…The simplest way to control the system consists in rule-based strategies that cannot perform optimally [11,12]. Particularly interesting is the work presented in [13], in which three rule-based control strategies are tested with three different goals: optimal power split between the batteries and the EDLCs, loss minimization, and State of Charge (SoC) optimization. The study suggests that even a simple control strategy enables efficient energy savings (when compared to conventional non-hybrid ESSs), but the authors of the present work think that such a statement cannot be generalized, as is discussed later.…”

Section: Topologies Used For Hess Integrationmentioning

confidence: 99%

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Approach to Hybrid Energy Storage Systems Dimensioning for Urban Electric Buses Regarding Efficiency and Battery Aging

Nájera

Moreno‐Torres²,

Lafoz

et al. 2017

Energies

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This paper focuses on Hybrid Energy Storage Systems (HESS), consisting of a combination of batteries and Electric Double Layer Capacitors (EDLC), for electric urban busses. The aim of the paper is to develop a methodology to determine the hybridization percentage that allows the electric bus to work with the highest efficiency while reducing battery aging, depending on the chosen topology, control strategy, and driving cycle. Three power electronic topologies are qualitatively analyzed based on different criteria, with the topology selected as the favorite being analyzed in detail. The whole system under study is comprised of the following elements: a battery pack (LiFePO4 batteries), an EDLC pack, up to two DC-DC converters (depending on the topology), and an equivalent load, which behaves as an electric bus drive (including motion resistances and inertia). Mathematical models for the battery, EDLCs, DC-DC converter, and the vehicle itself are developed for this analysis. The methodology presented in this work, as the main scientific contribution, considers performance variation (energy efficiency and battery aging) and hybridization percentage (ratio between batteries and EDLCs, defined in terms of mass), using a power load profile based on standard driving cycles. The results state that there is a hybridization percentage that increases energy efficiency and reduces battery aging, maximizing the economic benefits of the vehicle, for every combination of topology, type of storage device, control strategy, and driving cycle.

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Section: Topologies Used For Hess Integrationmentioning

confidence: 99%

Section: Topologies Used For Hess Integrationmentioning

confidence: 99%

Approach to Hybrid Energy Storage Systems Dimensioning for Urban Electric Buses Regarding Efficiency and Battery Aging

Nájera

Moreno‐Torres²,

Lafoz

et al. 2017

Energies

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“…This condition worsens when the fuel cell is associated with a fuel reformer to provide flexibility in the selection of the fuel because of its sluggish response characteristics [1]. Moreover, when the fuel cell is utilized to implement the power system, it is sized only to handle normal load to optimize the overall cost of the power system.…”

Section: Design Of the Controller Of The Proposed Converter For Tmentioning

confidence: 99%

“…A power-conditioning system for fuel cells needs to be designed to compensate for such drawbacks and make systems associated with fuel cells reliable power sources [1], [2]. Owing to its inherent characteristics, a fuel cell requires a start-up time and has a limited overload-handling capability.…”

Section: Introductionmentioning

confidence: 99%

“…The response of a fuel cell system mainly depends on several factors, such as hydrogen and air supply, mass flow, temperature and pressure control, and heat and water management [3], [4]. According to previous research, the limited overload-handling capability and long start-up time of fuel cells can be overcome by using a hybrid topology with an energy storage device, such as a battery or supercapacitor [1,2,5,6]. Compared with a fuel cell, a battery and a supercapacitor demonstrate a rapid response with no start-up time, and their power density is much higher than that of fuel cells.…”

Section: Introductionmentioning

confidence: 99%

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Design of a Fuel Cell Power Conditioning System for Online Diagnosis and Load Leveling

Nguyen¹,

Doan²,

Choi³

2016

Journal of Power Electronics

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A fuel cell power conditioning system for online diagnosis and load leveling under the condition of varying load is developed in this study. The proposed system comprises a unidirectional boost converter and a bidirectional buck-boost converter with a battery. The system operates in two different modes. In normal mode, the bidirectional converter is utilized for load leveling; in diagnostic mode, it is utilized to control load voltage while the boost converter generates perturbation current to implement the online diagnosis function through in-situ electrochemical impedance spectroscopy (EIS). The proposed method can perform EIS for a fuel cell under varying-load conditions with no influence on the load. The validity and feasibility of the proposed system are verified by experiments, and the design procedure of the proposed system is detailed.

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A comprehensive review on energy management strategies of hybrid energy storage system for electric vehicles

Geetha

Subramani

2017

Int. J. Energy Res.

101

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Summary The attention on green and clean technology innovations is highly demanded of a modern era. Transportation has seen a high rate of growth in today's cities. The conventional internal combustion engine‐operated vehicle liberates gasses like carbon dioxide, carbon monoxide, nitrogen oxides, hydrocarbons, and water, which result in the increased surface temperature of the earth. One of the optimum solutions to overcome fossil fuel degrading and global warming is electric vehicle. The challenging aspect in electric vehicle is its energy storage system. Many of the researchers mainly concentrate on the field of storage device cost reduction, its age increment, and energy densities' improvement. This paper explores an overview of an electric propulsion system composed of energy storage devices, power electronic converters, and electronic control unit. The battery with high‐energy density and ultracapacitor with high‐power density combination paves a way to overcome the challenges in energy storage system. This study aims at highlighting the various hybrid energy storage system configurations such as parallel passive, active, battery–UC, and UC–battery topologies. Finally, energy management control strategies, which are categorized in global optimization, are reviewed. Copyright © 2017 John Wiley & Sons, Ltd.

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Investigation of control strategies for hybrid energy storage systems in hybrid electric vehicles

Cited by 44 publications

References 22 publications

Approach to Hybrid Energy Storage Systems Dimensioning for Urban Electric Buses Regarding Efficiency and Battery Aging

Approach to Hybrid Energy Storage Systems Dimensioning for Urban Electric Buses Regarding Efficiency and Battery Aging

Design of a Fuel Cell Power Conditioning System for Online Diagnosis and Load Leveling

A comprehensive review on energy management strategies of hybrid energy storage system for electric vehicles

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