Hybrid fast charging stations with battery storage and local renewable generation can facilitate low-carbon electric vehicle (EV) charging, while reducing the stress on distribution grid. This paper proposes an energy management system (EMS) for a novel multi-battery design that directly connects its strings to other DC components through busbar matrix without need interfacing power converters. The EMS has two primary control tasks: (i) allocating microgrid components, in this case...

Abstract A simple and efficient hydrodeoxygenation strategy is described to selectively generate separate high‐value alkylphenols from pyrolysis bio‐oil, produced directly lignocellulosic biomass. The overall process only requires low pressures of hydrogen gas (5 bar). Initially, an investigation using model compounds indicates that MoC x /C a promising catalyst for targeted hydrodeoxygenation, enabling selective retention the desired Ar−OH substituents. By applying this procedure primary...

ADVERTISEMENT RETURN TO ISSUECommunicationNEXTScalable One-Pot Synthesis of Yolk–Shell Carbon Nanospheres with Yolk-Supported Pd Nanoparticles for Size-Selective CatalysisGuang-Hui Wang*Guang-Hui WangMax-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany*G.-H Wang. E-mail: [email protected]More by Guang-Hui Wanghttp://orcid.org/0000-0003-1631-1324, Kun ChenKun ChenMax-Planck-Institut GermanyMore Chen, Jan EngelhardtJan...

The paper presents the scope and research activities, both analytical experimental, to be carried out on Danish Island of Bornholm under 4-year (2019-2023) H2020 Insulae project. two use cases taking place in Denmark are described. first case is dedicated modelling testing a low-voltage DC microgrid comprising battery storage, renewable energy sources, an EV fast charger, towards providing grid services. second investigates potential renewable-driven virtual power plant embracing different...

Abstract Understanding the deactivation of transition‐metal carbide catalysts during hydrodeoxygenation (HDO) reactions is great importance for improving production second generation fuels from biomass. Based on a combined experimental and theoretical study, we present mechanistic model molybdenum phenol HDO in presence water. At increased water pressure, molecules preferentially bind to surface, active sites are no longer accessible phenol. In line with first principle calculations,...

This paper introduces a novel design of an electric vehicle (EV) fast charging station, consisting battery energy storage system (BESS) with reconfigurable cell topology. The BESS comprises two strings that decouple the power flow between EV and grid, to enable powers above grid capacity. is achieved by equipping cells semiconductor switches serves main purposes. First, it aims at solving unbalance issues increase safety, reliability, lifetime battery. Second, enables actively control...

Abstract A simple and efficient hydrodeoxygenation strategy is described to selectively generate separate high‐value alkylphenols from pyrolysis bio‐oil, produced directly lignocellulosic biomass. The overall process only requires low pressures of hydrogen gas (5 bar). Initially, an investigation using model compounds indicates that MoC x /C a promising catalyst for targeted hydrodeoxygenation, enabling selective retention the desired Ar−OH substituents. By applying this procedure primary...

Nanostructured noble-metal catalysts traditionally suffer from sintering under high operating temperatures, leading to durability issues and process limitations. The encapsulation of nanostructured prevent loss activity through thermal sintering, while maintaining accessibility active sites, remains a great challenge in the catalysis community. Here, we report robust regenerable palladium-based catalyst, wherein palladium particles are intercalated into three-dimensional framework...

Biogas plants may support the transformation towards renewable-based and integrated energy systems by providing dispatchable co-generation as well opportunities for biogas upgrading or power-to-X conversion. In this paper, a simulation model that comprises main dynamics of internal processes plant is developed. Based on first-order kinetics anaerobic digestion process, production an input feeding schedule raw material can be estimated. The output in terms electrical thermal validated against...

Recent advances in the development of reconfigurable batteries pave way for novel DC microgrid architectures that eliminate need DC–DC converters. The present study is focused on control a comprising battery system with three strings to flexibly operate two electric vehicle (EV) fast chargers, photovoltaic (PV) system, and grid-tie inverter. primary tasks are dynamically connect individual other components through busbar matrix, manage energy exchange AC grid. paper formulates as...

In this study, we introduce a battery energy storage system (BESS) with reconfigurable cell topology as the direct power source for fast-charging of electric vehicles (EVs). proposed scenario, BESS is following charging request EV by changing its in real time fashion. The modelled at level order to demonstrate design, and linked an model. simulation results confirm that can maintain balanced states while voltage satisfactory precision. However, approach adaptive switching shows be not...

To secure balanced operation of electric networks and mitigate costly grid reinforcements, distributed generation (DG) units play a role in providing flexibility activation services. This paper analyses high-resolution measurements reports lessons learnt from experimental active power control (APC) installed DG – two PV plants, wind farm, biogas plant on the Danish island Bornholm. The evaluates how quickly these can respond to requests accurate precise their output is when following...

Reconfigurable batteries can change their cell topology in real time, which enables them to adapt voltage during operation. This unique capability makes interfacing power converters redundant applications where are directly coupled with other DC components. The present paper characterizes a prototype of reconfigurable battery for high applications, and estimates the efficiency complete operating area. results show that is higher charging levels. losses components enabling design only add...

Batteries are key components of future power systems with high shares renewables. Their fast response enables them to contribute one the most crucial ancillary services — frequency containment reserve. However, longer periods biased pose challenges for batteries due their limited energy capacity. This is particularly in Nordic synchronous area where 100 % certainty delivery required. The present study uses a simulation model three years historical frequency, market, and tariff data, compare...

The paper provides a detailed description of the 62-kWh battery pack Nissan LEAF e-plus. Experimental measurements are collected and analyzed to identify electrical thermal properties. parameters identified open circuit voltage, polarization resistance, diffusion resistances capacitances. Measurements carried out for different State-of-Charge temperatures values. current interruption method is used properties battery, since it an effective way analyze whole without disassembling vehicle....

Many industrialised nations recently concentrated their focus on hydrogen as a viable option for the decarbonisation of fossil-intensive sectors, including maritime transportation. A sustainable alternative to conventional production based fossil hydrocarbons is water electrolysis powered by renewable energy sources. This paper presents detailed techno-economic optimisation model sizing an electrolyser and storage embedded in multi-domain virtual power plant produce green seaborne passenger...

Battery energy storage systems (BESS) can be used for ancillary services like frequency containment reserve (FCR), which generate a significantly higher revenue than arbitrage. Different FCR differ in revenues and throughput, induces costs due to conversion losses, tariffs, but it also leads significant number of battery cycles that reduce the capacity over time. The normal operation (FCR-N) had highest past years, comes along with throughput disturbance (FCR-D) has lower price. Based on...

Batteries are key components of future power systems with high shares renewables. Their fast response enable them to contribute one the most crucial ancillary services - frequency containment reserve. However, longer periods biased pose challenges for batteries due their limited energy capacity. This is particularly in Nordic synchronous area where 100% certainty delivery required. The present study uses a simulation model three years historical frequency, market, and tariff data, compare...

The widespread adoption of electric vehicles (EVs) is a vital step in the reduction emissions within transport sector. However, development public fast charging infrastructure and proper modeling EV behaviours required to enable this adoption. This paper presents data patterns observed at battery buffered DC microgrid on Danish island Bornholm. sessions single site tend be shorter with lower total energy transfer compared studies wider scope. An atypical uptake charges higher than average...

Reconfigurable batteries can change their cell topology in real time, which enables them to adapt voltage during operation. This unique capability makes interfacing power converters redundant applications where are directly coupled with other DC components or systems. The present paper characterizes a 104 kWh prototype of reconfigurable battery for high applications, and derives equations calculating the efficiency complete operating area. its from 0 V up 1200 V, reaches values 240 kW...

Instant-Grid (2006) provides an environment for demonstration, test and development of grid applications. Using a live-CD approach, cluster configuration deployment middleware is fully automated. The default installation results in set ready-to-use functionalities, which can be accessed beginner-friendly way via Web portal. It also includes number p reconfigured applications, demonstrate the uses benefits grid. One example generation photo realistic images using as rendering farm

Self-sufficiency is an important metric for various energy concepts, as it reflects what share of the local consumption covered by generation. However, equation commonly used in literature cannot be applied to systems with storage that actively exchanges grid. With more and incorporating units therefore necessary re-think mathematical definition self-sufficiency. The present paper addresses this issue proposing alternative captures distinctive factors introduced units: (i) Energy exported...

The demand for electric vehicle supply equipment (EVSE) is increasing because of the rapid shift toward transport. Introducing EVSE on a large scale into power grid can increase volatility, negatively affecting frequency stability. A viable solution to this challenge development smart charging technologies capable performing regulation. This paper presents an experimental proof concept new regulation method utilizing distributed control architecture. architecture dynamically adjusts...