Lemur gallery


Public Funding


LEMUR Laboratory for Enhanced Microgrid Unbalanced Research


This is a request for aid to support activities carried out by research groups in the Principality of Asturias during 2018-2019 on a competitive basis. The suggested challenges by the Lemur research group for the 2018-2020 trienium are aimed at consolidating current lines of research, relating to the integral management of electrical energy systems and at incorporating new research lines already started. Thus, among the lines in which the group has forged its trajectory the following ones must be highligted: Implementation of new power converter topologies for the integration distributed resources into the network. Development of distributed control systems for the integration of distributed resources in electrical networks and micogrids. Generalization of algorithms for the calculation of load flows for real time applications in DC/AC hybrid networks. New hybrid DC/AC networks architectures that allow a reduction in the number of energy conversions stoges needed to connect loads and distributed generation systems.

Agency: Government of the Principality of Asturias
Principal Investigator: Cristina González-Moran
Amount: 135.300,00€
Date: 2018-2020



SIBALI Simulación de Baterías de Litio-ion


The aim of this project is to find a methodology to achive an adequate dimensioning of a storage system for a given application. To do this, it is necessary to be able to model the system since intuitive sizing or sizing based on independent variables in unfeasible. This modeling has several “layers” as they are: Electrical simulation: it must be able to reproduce the electrical behaviour of the lithium-ion cells used. Thermal simulation: it must be able to show the thermal behaviour of the cells especially in their integration in the Battery pack. Electrochemical simulation: predicting the degradation of the cells due to cyclability or ageing is crucial in order to be able to assess the operating cost of the storage system. System simulation: consists of integrating the simulations of the different elements of a storage system (cells, control electronics, envelopes, power electronics) with special focus on their interfaces. Economic simulation: an economic dimensioning is proposed that allows to obstain the optimum between performance and cost.

Agency: Ministerio de Economía y Competitividad
Main researcher: Pablo García Fernández
Amount: 131.464,88€
Date: 01/01/2018 – 31/12/2021



Gestión integral de energía eléctrica en elevadores y pasarelas  “Proof of Concept” (Integral management of electrical energy in elevators and walkways)

(SV-PA-17-RIS3-3) 2017/00144/001.

A feasibility study of an integral energy management system for applications of interest to Thyssenkrupp (elevators/walkways) was carried out, including the following aspects: to analyze the performance of different types of key energy storage technologies in the target applications; to difine the amount of required data to implement control strategies for the optimization of the system operation; to analyze the feasibility of implementing control and diagnostic algorithms; to adapt system visualization tools, to help in decisión making procedures. The development begins from the previous lines of research: Development of a 300KVa AC microgrid, with distributed generation, storage, load emulation and distributed sensors system; development of integral electrical energy management solutions for industrial applications; improvement of energy efficiency based on date management techniques and cloud computing; development of simulators and visualización of AC/DC power microgrids.

Main researcher: Jorge García
Amount: 30.000€
Date: June 2017 to June, 2018


SIETEC Development of a cloud computing based system for the improvement of energy eficiency in buildings


In this project, building automation techniques will be merged with cloud computing engineering in order to create a tool able to monitor and classify the behaviour of the customers in terms of electrical energy consumption, the tool will be also recommend changes in the user behaviour or tariff in order to increase the efficiency and reduce the cost of the electricity. All the information will be codified in an application that can be accessible on line by means of a mobile terminal.

Agency: Science and Innovation Ministry (Spanish Government),
Principal Investigator: Pablo Arboleya and Pablo García
Amount: 185k€
Date: 2017-2019



CONCILIATOR Energy conversion technologies in resilient hybrid AC/DC distribution networks


Project CONCILIATOR proposes new power distribution alternatives based on hybrid DC/AC distribution schemes for addressing some of the existing issues on pure AC and DC networks. Namely, the project will improve the efficiency of the integration of Distributed Resources (DR), such as distributed generation with renewables, energy storage, responsive loads, etc.; it will boost the grid stability and resiliency; and, finally, it will allow a cost reduction in the installations of prosumers facilities, thus having a positive impact on the sustainable and environmental-friendly development.

Agency: Economy and Competitiveness Ministry (Spanish Government)
Principal Investigator: Pablo Arboleya and Jorge García
Amount: 200k€
Date: 2017-2019



MICROHOLO Development of a Holistic and Systematical Approach to AC Microgrids Design and Management


This project is conceived to propose operating solutions to boost the deployment of AC microgrids (uG) as a key tool for changing the electrical energy distribution paradigm towards Distribution Generation (DG). The project approaches the AC uG subject from two aspects; one covering the analysis, development and implementation of power converter (PEC) structures based on multiport Solid State Transformer (SST) for the integration of Energy Storage Systems (ESS) in the distribution electrical network; while the other research field deals with the inclusion of these converters into the uG general management scheme, considering the analysis of the power flow constraints and the reliability issues that arise.

Agency: Economy and Competitiveness Ministry (Spanish Government)
Principal Investigator: Pablo García, Cristina González
Amount: 205k€
Date: 2014-2016



LEMUR Laboratory for Enhanced Microgrid Unbalanced Research


In this project a comprehensive test-bench microgrid is developed for multiple purposes, among others, the study of the impact of the renewable energy penetration over the distribution networks. New distribution and control schemes based in Hybrid AC/DC distribution will be proposed and tested. The microgrid will be equipped with load emulators, solid state transformer, distributed generators emulators connected to the grid through power converters and storage systems.

Agency: Government of the Principality of Asturias.
Principal Investigator: Pablo Arboleya
Amount: 80k€
Date: 2015-2016



Measurement and Monitoring system for an STATCON with energy storage for transitory compensation of grid frequency


The aims of this project were the development of a power converter for interfacing electric vehicles for charging purposes, studing the paralell conection of several converters, characterizing the batteries and developing a control system for the whole system.

Agency: Gijón city hall.
Principal Investigator: Cristina González
Amount: 4.7k€
Date: 2010-2013



SIENER Energetic management technologies for railway applications

MICINN-10- IPT-370000-2010-15.

The main objective of the Siener project, led by the company CAF (Construcciones y Auxiliar de Ferrocarriles, SA), is to develop new systems to optimize the energy demand management at grid and vehicle levels in DC railway systems, increasing the ratio of energy use to levels close to (100%), by combining various technological developments. The role of the University of Oviedo was the development of a precise simulation software including the conventional trains and substations, but also including more complex systems including regenerative braking, on-board accumulation, reversible substations and accumulation systems connected directly to the DC network.

Agency: Science and Innovation Ministry (Spanish Government)
Principal Investigator: Pablo Arboleya
Amount: 366k€
Date: 10/01/10-07/31/13



Representation, planning and optimization of islanded microgrids based in renewable energy using stability and economical criteria


This project was focused in the study and development of management strategies for stand-alone- droop-controlled microgrids, mainly supplied by renewal energies (specifically wind energy and photovoltaics). The study was faced from both technical and economical points of view, taking into account the intermittent nature of renewal energy resources. The stability was analyzed by means of small-signal techniques, making possible to determine the stability margins of the system for different operating scenarios.

Agency: Science and Innovation Ministry (Spanish Government)
Amount: 120k€
Date: 01/01/11- 12/31/13



ELEVTRA Training professionals for the maintenance of EVs and charging stations

(Leonardo da Vinci Program)

The main objective of ELEVTRA is to develop a comprehensive, international and standardized training programme on the maintenance and repair of Electric Vehicles (EV) and charging stations (CS). The project addresses a number of challenges that are crucial for the development of the electro-mobility technologies. A professional profile specialised in electric mobility, battery recharge stations and related maintenance engineering according to the European Qualifications Framework (EQF) was defined and a set of training tools, methodology and training materials following the European Quality Assurance Reference Framework for Vocational Education and Training (EQAVET) were generated for being used in an e-learnig platform.

Agency: European Commission
Principal investigator: Jorge García
Amount: 85k€
Date: 01/10/11-09/30/14



ENERLIGHT – High efficiency public lighting research, including storage and generation capacity in autonomous or grid connected mode.

MICINN-10-DPI2010- 15889

This project aims to research into new electronic solutions for high efficiency street lighting systems, incorporating energy generation and storage capabilities, and covering the possibility of autonomous operation and delivery of energy to the electrical power grid. This research will be realized by means of the construction of a demonstrator of an autonomous public lighting system, as well as a power generator system capable of delivering energy to the grid.

Agency: Science and Innovation Ministry (Spanish Government)
Amount: 200k€
Date: 11/01/2010-10/31/2013


Development and implementation of technological solutions for the 2025 Spanish grid


The aim of this project was to design, specify and develop technological solutions enabling the optimisation of the distribution system by integrating distributed generation, accumulation and consumption. It was based in 5 different lines of action; Power electronics applications for controlling the grid, Optimal integration of distributed resources, Electricity storage, New network applications based on superconductor materials, Managing information in smart grids. The consortium was formed by 45 entities (5 electricity transport and distribution companies, 25 manufacturers and 15 PRIs). The role of the University of Oviedo was related with the transient modelling of different FACTS devices and the analysis of the impact of these devices in the Spanish network

Agency: Science and Innovation Ministry (Spanish Government)
Amount: 255k€
Date: 01/12/09-04/31/11



HIDROTOR: Microhidraulic generation systems


This project deals with the design and manufacturing of an Archimedes Screw for electricity generation. The project goals for the LEMUR members are the design of electric drive and the control system to allow the system efficiently inject the produced electricity into the grid while keeping the water turbine at its power peak.

Agency: Science and Innovation Ministry (Spanish Government)
Amount: 345k€
Date: 01/01/08- 12/31/11



CETICA Project: The Eco Technological City. Steel-based industrialization for a more sustainable urban habitat


The main objective of the CETICA project is the design and development of a new sustainable building model taking into account energy efficiency, ecological sustainability and end user aspects. The project focuses not only the development of new materials and building systems based on steel, but also in the integration of ICT solutions. Part of this large project, the ambient intelligent activity, aims to develop ambient intelligent systems to make living more comfortable and safe. To achieve this goal the components of the house will be equipped with the latest information technologies (such as sensor networks) designed to respond proactively to the needs of each individual (elderly, children, etc.). The role of the University of Oviedo in this project was the design, modelling and testing the proposed smart microgrids used for feeding the new buildings.

Agency: Science and Innova- tion Ministry (Spanish Government)
Amount: 150k€
Date: 10/31/07-12/31/10



DENISE Project: Smart, Safe and Efficient Energy Distribution


A National consortium of 16 companies and 9 research institutions united to perform research and development of enabling technologies and information systems oriented to solve the challenges of a new generation of active energy distribution networks. The total budget was 24 million euros. The main objectives were the identification of future scenarios of active distribution networks, Research and develop enabling technologies, algorithms, and hardware applied to network operation, energy efficiency and distributed generation.

Agency: Science and Innovation Ministry (Spanish Government)
Amount: 285k€
Date: 21/03/07-12/31/10



Characterization of the injection transformer and its control in generation and compensation systems fed simultaneously by a distributed generation source

MEC-07- DPI2007-62577

In this project, new designs for power transformers with special applications where proposed, analysed, modelled and developed. These special applications were related with power transformers for interfacing distributed generators to the grid and connecting to the grid other devices such as Dynamic Voltage Restorers (DVR). A new design was proposed and tested relating this application to remove the risk of saturation in the power transformer when a voltage sag occurs and it is being compensated.

Agency: Science and Education Ministry (Spanish Government)
Amount: 65k€
Date: 10/01/07-09/30/10



Study for creating an energy management system in weak distribution grids working on isolated mode


This project had as the main objectives the study of the existing microgrids topologies to evaluate the possibilities of working under islanded mode of operation from the main grid. This study permitted the development of a power management system as well as several control strategies to be used into the converters that connected the distributed generators to the electrical microgrid.

Agency: FYCIT (Regional Asturian Government) – Solar Kuantica SL
Principal Investigator: Pablo Arboleya and Cristina González-Morán
Amount: 35k€
Date: 01/01/07-12/31/07



BENAPI2: Electronic ballasts for non-resonant metal halide lamps adaptated to automated industrial production

MEC DPI2007-61522

This project explores the possibility of achieving stabilization in high frequency operation of metal halide lamps of 35 W. This stabilization is achieved through the use of ballasts for high-frequency square wave, with digital control system, and integrated starter. The digital control is implemented by means of low cost microcontrollers, and by integrating the stages in a single module to achieve a competitive product. The starter approach used for this type of lamp is very new, using a non-resonant inverter in series with a resonant starter.

Agency: Spanish Goverment
Principal Investigator: Jorge García
Amount: 97k€ 12/01/2006-12/01/2010
Date: 12/01/2006-12/01/2010



Neural network assisted optimization and design of induction motors through a deterministic/stochastic combination


This project was the generalization of an optimization procedure for designing new induction motors starting with the parameters of old designs. It was done in collaboration with ABB and several designs were proposed, tested and incorporated to the ABB commercial brochures using this procedure.

Agency: FYCIT (Regional Asturian Government)
Amount: 25k€
Date: 01/13/05-12/31/06


Power transformers transient response characterization and its application to the insulation in Clarke space


In this project the problem of differential protection during the connection transient of power transformers was analyzed and solved using the multiresolution wavelet analysis (MRA) of the Park/Clarke vector. The obtained method is valid for recognising internal faults in power transformers even during the inrsuh transient, in a very fast and simple way. The method was patented by the University of Oviedo.

Agency: Science and Technology Ministry (Spanish Government)
Amount: 55k€
Date: 12/15/04-12/15/07



UPLIGHT: Using piezoelectric transformers in lighting applications

G1ST-CT- 2002-50304

This project explored the applicability of piezoelectric transformers in electronic lighting systems. After detecting potential target applications based on piezoelectric technology, the design of some devices was carried out for lighting systems.

Agency: European Commission. Brite-Euram (Craft Version)
Amount: 213k€
Date: 03/01/2003-08/01/2005



New electromagnetic models of power transformers with internal short-circuits for its application in predictive maintenance


In this project a new model for simulating internal faults in power transformer during the transient start-up was developed, tested and validated. The method assumed that the fault is generated by a fictitious winding so the rest of the machine is modelled as a sound winding transformer. The use of this model was very useful in further projects to understand the mechanisms of the internal faults and develop a method to detect them.

Agency: Science and Education Ministry (Spanish Government)
Amount: 35k€
Date: 10/01/2002-03/31/2004

All Research

Pin It on Pinterest

Share This