A5044023688- Smart Grid Energy Management
- Astrophysics and Star Formation Studies
- Electric Vehicles and Infrastructure
- Microgrid Control and Optimization
- Advanced Battery Technologies Research
- Galaxies: Formation, Evolution, Phenomena
- Spectroscopy and Laser Applications
- Astronomy and Astrophysical Research
- Energy Load and Power Forecasting
- Stellar, planetary, and galactic studies
- Radio Frequency Integrated Circuit Design
- Optimal Power Flow Distribution
- Electromagnetic Compatibility and Noise Suppression
- Electric Power System Optimization
- Atomic and Molecular Physics
- Energy, Environment, and Transportation Policies
- Islanding Detection in Power Systems
- Phase Equilibria and Thermodynamics
- Hybrid Renewable Energy Systems
- Integrated Energy Systems Optimization
- Advanced Fiber Optic Sensors
- Electrostatic Discharge in Electronics
- Low-power high-performance VLSI design
- Silicon Carbide Semiconductor Technologies
- Thermal Analysis in Power Transmission
Aristotle University of Thessaloniki
2017-2025
Academy of Athens
2024-2025
Cardiff University
2009-2024
Max Planck Institute for Extraterrestrial Physics
2024
Motor Oil (Greece)
2024
Prisma Electronics (Greece)
2024
University of Manchester
2024
National and Kapodistrian University of Athens
2017-2020
GTx (United States)
2018
UK Power Networks
2015-2017
Battery charging of electric vehicles (EVs) will increase the power demand in distribution networks. It is anticipated that this cause voltage drops, thermal overloads and an losses. The severity impact depend on EV owners' behaviour. A generic three-phase low (LV) residential network model was used to evaluate effects battery networks, effect a smart regime for EVs as well contribution dispersed micro-generation (mGen) sources. uncertainties associated with loads, m-Gen behaviour, were...
We use state-of-the-art chemical models to track the cosmic evolution of CNO isotopes in interstellar medium (ISM) galaxies, yielding powerful constraints on their stellar initial mass function (IMF). re-assess relative roles massive stars, asymptotic giant branch (AGB) stars and novae production rare such as 13C, 15N, 17O 18O, along with 12C, 14N 16O. The isotope yields super-AGB fast-rotating are included. Having reproduced available enrichment data solar neighbourhood, across Galaxy,...
We describe the European Large Area ISO Survey (ELAIS). ELAIS was largest single Open Time project conducted by ISO, mapping an area of 12 deg2 at 15 μm with ISOCAM and 90 ISOPHOT. Secondary surveys in other bands were undertaken team within fields primary survey, 6 being covered 6.7 1 175 μm. This paper discusses goals techniques employed its construction, as well presenting details observations carried out, data from which are now public domain. outline 'preliminary analysis' led to...
We report single-dish multitransition measurements of the 12CO, HCN, and HCO+ molecular line emission as well HNC J = 1–0 HNCO in two ultraluminous IR galaxies Arp 220 NGC 6240. Using this new inventory, conjunction with existing data literature, we compiled most extensive sets to date for such galaxies. The many rotational transitions, their different excitation requirements, allow study gas over a wide range densities temperatures significant redundancy, thus good constraints on properties...
Any Cost-effective transition toward low-carbon electricity supply will necessitate improved system flexibility to address the challenges of increased balancing requirements and degradation in asset use. Energy storage (ES) represents a flexible option that can bring significant, fundamental economic benefits various areas electric power sector, including reduced investment for generation, transmission, distribution infrastructure as well operation costs. The additional offered by ES could...
An agent-based control system that coordinates the battery charging of electric vehicles in distribution networks is presented. The objective to charge at times low electricity prices within network technical constraints. Search techniques and neural are used for decision making agents. ability work successfully when operated its loading limits violated demonstrated through experimental validation .
Three approaches for grid integration of Electric Vehicles (EVs) through a Virtual Power Plant (VPP) concept are introduced. A classification these different ways realizing VPP based on the control structure, resource type, and aggregation approach is discussed. This followed by description three approaches, which referred to as direct, hierarchical, distributed approaches. For each necessary operational steps discussed differences highlighted. Finally, case study presented demonstrate EV concept.
When a primary substation reaches its capacity limit, the standard solution is to reinforce network with additional circuits. Under right conditions, required peak can be provided by energy storage systems (ESS), real-time thermal ratings (RTTR) or combination of two. We present probabilistic method for calculating size an electrical system demand shaving application. The impact both power and are considered, along reliability existing overhead lines. also consider RTTR - taking advantage...
Abstract Despite progress in our knowledge about pancreatic islet specification, most attempts at differentiating stem/progenitor cells into functional, transplantable β have met only with moderate success thus far. A major challenge is the intrinsic simplicity of vitro culture systems, which cannot approximate physiological complexity vivo microenvironments. Oxygenation a critical limitation standard methods, and one special relevance for development cells, known their high O2 requirements....
We use time-varying models of the coupled evolution HI, H_2 gas phases and stars in galaxy-sized numerical simulations to: a) test for emergence Kennicutt-Schmidt (K-S) H_2-pressure relation, b) explore a realistic H_2-regulated star formation recipe which brings forth neglected potentially significant SF-regulating factor, c) go beyond typical galactic environments (for these empirical relations are deduced) to early very gas-rich galaxies. In this work we model low mass galaxies ($M_{\rm...
Battery charging of Electric Vehicles (EVs) will increase the power demand in distribution networks. It is anticipated that this cause voltage drops, thermal overloads and an losses. These impacts be affected by behaviour owners EVs. A typical 3-phase LV residential network model used to evaluate effects EV battery on networks with Distributed Generation (DG). The uncertainties associated ownership EVs, rating equipment, occurrence duration charging, together spatial DG installation, were...
The increasing electricity costs and the decarbonization targets are driving consumers to seek alternative energy supply management tools decrease their costs. In this context, aggregators, Energy Service Companies (ESCOs) developing financing solutions offer holistic that may facilitate a seamless integration of PV, batteries electromobility into customer premises. Such require novel but robust methodologies algorithms can increase benefits. work, methodology comprising forecasting...
There is now strong evidence suggesting that the 12CO J = 1-0 transition, widely used to trace H2 gas, significantly underestimates its mass in metal-poor regions. In spiral disks such regions are found at large galactocentric distances, where we show any unaccounted gas phase likely be diffuse (n ~ 5-20 cm-3) and warmer (Tkin 50-100 K) than cool 15-20 CO-luminous one. Moreover, find a high value of formation rate on grains, suggested by recent observational work, can compensate for...
The effect of domestic charging electric vehicles (EVs) on electricity demand at a national level was addressed. A study case created to investigate how different regimes (i.e. control policies) and EV-uptake levels will affect the Great Britain (GB) Spain in 2030. Charging rates, battery capacities, charger efficiencies were drawn from literature. Traffic patterns acquired British Department for Transport Spanish Ministry Public Works. Uncontrolled, dual tariff (time-based control), dynamic...
In this paper, harmonic voltage and current measurements performed at the Point of Common Coupling an existing wind farm comprising five variable speed turbines are analyzed their most important characteristics presented. Important issues under consideration variation currents with output power, probability distribution magnitude phase angle, effect application grouping, according to IEC 61000-4-7, selection averaging time. Further, results from symmetrical component analysis Finally,...
The paper presents an ontology model, developed with knowledge based editor, Protigi 3.3.1, for wind turbines' condition monitoring. model proposed by the authors, describes turbine components, a base, and can be used as basis of fault detection diagnosis system to reduce cost per kWh generation. It Includes sensing specifications, according BRAIME, SKF HYDAC gearbox manufacturing organizations, fo vIta characteristics Wind Energy Converter's (WEC's) gearbox, such (1) oil temperature, (Hi)...
Electric Vehicles are anticipated to have a considerable percentage of the vehicle market sales in forthcoming years. The additional energy requirements for charging their batteries may affect network operation, terms stability and reliability, especially when these synchronized with system peak demand. This issue will present power operators challenge efficiently integrate into systems by exploiting ability behave as manageable loads. Multi-Agent System technology has been proven promising...