An energy conservation and environmental improvement solution-ultra-capacitor/battery hybrid power source for vehicular applications

Ren, Guizhou; Wang, Haoran; Chen, Changlei; Wang, Jinzhong

doi:10.1016/j.seta.2021.100998

Cited by 13 publications

(15 citation statements)

References 149 publications

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“…Ultra‐capacitors and batteries are mainly utilized by ERSs 66,67 . Regarding the intermittency behavior and power density of the regenerative braking energy, ultra‐capacitors are a suitable choice to capture energy peaks due to their fast response 68,69 . On the other side, batteries have higher energy density and are more suitable for RERs based on the uncertainty associated with their output power 70,71 .…”

Section: System Modelingmentioning

confidence: 99%

Optimal stochastic energy management of electrical railway systems considering renewable energy resources' uncertainties and interactions with utility grid

Ehteshami

Hashemi‐Dezaki

Javadi

2022

Energy Science & Engineering

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Several studies have been reported for optimal operation of electrical railway systems (ERSs). However, the stochastic energy management of ERSs, including renewable energy resources (RERs), has received less attention. The RERs’ uncertainties might affect the ERSs. On the other hand, the calculation time of the Monte Carlo simulation (MCS)‐based approaches is an essential challenge, which should be solved, particularly in real‐time decisions and recursive optimization problems. Thus, it is crucial to study the ERSs' stochastic behaviors and uncertainties, including RERs. This paper tries to overcome the discussed concerns and challenges by proposing a novel ERS’s optimal stochastic energy management using clustering algorithms. In this paper, the backward scenario reduction algorithm has been used. In addition, regenerative braking energy (RBE) and energy management systems (ESSs) have been studied. Studying the impacts of changes in the number of passengers on the optimized operation of ERSs and investigating the interaction between the utility grid and the ERS are other contributions of this research. The proposed method is applied to an actual test system of Tehran Urban and Suburban Railway Operation Company (TUSROC). Test results are validated by comparing with available MCS‐based methods. Simulation results illustrate the accuracy and computation time advantages of the proposed method. Simulation results illustrate that <0.6% inaccuracy appears in the proposed method, while it would be 500 times faster than MCS‐based ones. The comparative test results show the advantages of the introduced method.

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Section: System Modelingmentioning

confidence: 99%

Optimal stochastic energy management of electrical railway systems considering renewable energy resources' uncertainties and interactions with utility grid

Ehteshami

Hashemi‐Dezaki

Javadi

2022

Energy Science & Engineering

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“…The realization of hybrid storage systems mainly depends on the ability to electrically interconnect and manage a heterogeneous grouping of storage technologies. This is triggered by advanced power electronics [22,23] and associated power-sharing algorithms [24][25][26] to manage energy in such hybrid systems to provide a variety of energy services (e.g., voltage compensation, storage, phase balancing, etc.). Aspects to consider for such power-sharing algorithms are usually the main technical performance of each storage technology embedded into the hybrid solution (e.g., energy and power ratings, cyclability, time response), and degradation mechanisms.…”

Section: Integration Of Energy Storage Systemsmentioning

confidence: 99%

Developing Novel Technologies and Services for Intelligent Low Voltage Electricity Grids: Cost–Benefit Analysis and Policy Implications

et al. 2021

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The paper presents a set of prototype smart grid technologies and services and validates the economic viability of the proposed solution using cost–benefit analysis (CBA). The study considered the EU-funded project called RESOLVD and implemented the technologies and services in a real-life pilot. the technologies and services on the EU-funded H2020. The paper focuses on the analysis of technological solutions which enhance the operational efficiency and the hosting capacity of low-voltage electricity distribution grids. The solutions provided better integration of a hybrid battery storage system, with the grid interfacing power electronics, smart gateways for the interconnection of assets at the grid edge, and sensors enhancing infrastructure observability and control. The result from the CBA indicates the economic viability of the project, high scalability, and replicability. The economic benefits were realized with the breakeven value of eight secondary substations (SS) and 16 feeders. The scenario test on the DSO’s willingness to pay for the software as a service (SaaS) revealed that the payback period can further be reduced by almost half with a higher internal rate of return (IRR) and net present value (NPV). Both the CBA and scenario tests showed RESOLVD solution can become more economically viable when deployed in largescale. Moreover, the CBA results provide evidence to the energy policy by allowing DSOs to consider both CAPEX and OPEX for better investment decisions. Further, the paper proposes an alternative business approach that shifts from grid reinforcement to service provision. The paper also discusses the research implications on energy policy and business.

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“…Lithium-ion batteries have the outstanding characteristics of high energy density, long cycle life, excellent cycle performance, no memory effect and high efficiency, so they have become the essential energy storage system of electric vehicles [1,2]. However, the lithium-ion batteries currently used cannot fully meet the electric vehicle energy storage system [3].…”

Section: Introductionmentioning

confidence: 99%

“…Due to power density and cycle life limitations, lithium-ion batteries encounter new technical bottlenecks in large-scale power demand applications [4][5][6]. Compared with the lithium-ion battery, a supercapacitor has a higher power density, shorter charging time, longer cycle life, and better meeting the power demand of various electronic equipment [2,4,5,[7][8][9][10][11][12][13]. However, the disadvantage of the low energy density of the supercapacitor cannot be ignored [4].…”

Section: Introductionmentioning

confidence: 99%

Study on direct parallel charging of lithium-ion battery and supercapacitor

Dong

Deng

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Currently, there are few studies on hybrid system charging, and the existing ones rely on many power electronic components to charge lithium-ion battery and supercapacitor, respectively. This paper mainly focuses on the direct parallel charging of lithium-ion battery and supercapacitor, which has simple structure and low cost. However, the capacity of the hybrid system can not be fully utilized due to the unreasonable current distribution during charging. This paper proposes a method that improves the charging effect: constant current charging under fine tuning the resistance distribution of battery branch and supercapacitor branch (CCFTR). The results show that although the charging time is increased slightly with the CCFTR, the charging capacity can increase significantly. Compared with the untreated constant current charging (CC), the charging time is only prolonged by 6.77 minutes with the CCFTR (50mΩ) at 22A (2.75C), but the charging capacity is increased by 48.4%, reaching 95.1% of the rated capacity. And the CCFTR can dramatically prolong the battery life. The effect is better under higher current. Compared to the CC with the same charging current, the CCFTR can extend the battery life by 11.37% at 2.75C and 26.02% at 3.75C.

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An energy conservation and environmental improvement solution-ultra-capacitor/battery hybrid power source for vehicular applications

Cited by 13 publications

References 149 publications

Optimal stochastic energy management of electrical railway systems considering renewable energy resources' uncertainties and interactions with utility grid

Optimal stochastic energy management of electrical railway systems considering renewable energy resources' uncertainties and interactions with utility grid

Developing Novel Technologies and Services for Intelligent Low Voltage Electricity Grids: Cost–Benefit Analysis and Policy Implications

Study on direct parallel charging of lithium-ion battery and supercapacitor

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