UPCommons - E-prints UPC Universitat Politècnica de Catalunya
E-prints UPC cobreix dues finalitats: per una banda, és el dipòsit institucional de la UPC que recull els articles de revista, les comunicacions de congrés i els reports de recerca generats en les activitats de recerca del personal docent i investigador de la universitat; per l'altra, és una eina que permet accelerar la producció científica, allotjant versions de documents prèvies a la publicació en una revista o a les actes d’un congrés.
Ponències/Comunicacions de congressos
Mostrando recursos 1 - 20 de 44
Biomass gasification for off-grid electrification of South-Saharan Africa - Depoorter Ruelle, Víctor; Olivella Rosell, Pol; Giral Guardia, Jordi; Lladó Jaume, Àngel; Sudrià Andreu, Antoni; Villafafila Robles, Roberto
The NGO Misión y Desarrollo para Goundi, with the collaboration of the technology transfer centre CITCEA-UPC and the support of the CCD-UPC, is carrying out since 2011 the project Pôle Goundi aiming to electrify Goundi, a village located in the South of Chad.
In this sense, the construction of a small-scale power plant which will use local resources to generate electricity is planned. Although the plant is expected to use photovoltaic and thermal solar energies also, biomass gasification has also
been prioritized due to the social and economical advantages of spurring agricultural activity in Goundi.
Since the installation of the power plant will...
Development and implementation of a dynamic PV emulator with HMI interface for high power inverters - Heredero Peris, Daniel; Capó Lliteras, Macià; Miguel Espinar, Carlos; Lledó Ponsati, Tomàs; Montesinos Miracle, Daniel
In this paper a 10 kVA photovoltaic emulator is presented. The system implemented generates photovoltaic V-I characteristic curves to analyse and test maximum power point tracking algorithms of real
photovoltaic inverters according to the standard EN50530. The power converter used includes a threephase ac-dc active rectifier. The power stage selected allows to minimize the harmonic current content
and permits to be closed to the unity power factor with a fast response. The emulator is controlled by a digital signal processor that communicates with a human-machine-interface. It allows to emulate static
and dynamic responses. Furthermore, the interface is also capable of simulating weather evolution...
Simulation of an electric racing car using energetic macroscopic representation - Montesinos Miracle, Daniel; Fontán Tebar, Cristian; Vidal Salvia, Humbert
Formula Student is a university competition around
the world where students are required to design, construct and
compete with a race car in static and dynamic tests. Since few
years ago, this competition has moved to electric propulsion.
ETSEIB Motorsport Team at Barcelona, Spain has develop an
electric race car and this paper presents the EMR and IBC
developed for that in order to analyze the car and further improve
the braking and traction system.
The CDMtek-PM: An educational platform for learning about motion control and electrical drives - Armero Almazán, Pablo; Montesinos Miracle, Daniel; Galcerán Arellano, Samuel; Rull Duran, Joan; Villafafila Robles, Roberto; Boix Aragonès, Oriol
The module CDMtek-PM has been developed with the needs of the electrical engineering students in mind. It is intended to serve as a platform to begin to consolidate the theoretical knowledge learned during the classes by providing a practical tool where they can program the software, for example with the CDMtek-DS module, and then observe, analyse and make real-time measures of the electrical and mechanical part of an electrical drive.
The CDMtek-DS - an educational platform for entering into the microcontrollers world - Armero Almazán, Pablo; Galcerán Arellano, Samuel; Bergas Jané, Joan Gabriel; Sumper, Andreas; Gomis Bellmunt, Oriol; Sudrià Andreu, Antoni
The module CDMtek-DS is a standalone module with which the student can learn how to program a microcontroller or a digital signal processor and interact with the peripherals included in the module. It also includes a CAN transceiver to get into the industrial communications world. This module is intended to be used with the CDMtek-PM to build a complete platform for motion control.
Implementation of grid-connected to/from off-grid transference for micro-grid inverters - Heredero Peris, Daniel; Chillón Antón, Cristian; Pages Gimenez, Marc; Gross, Gabriel Igor; Montesinos Miracle, Daniel
This paper presents the transfer of a microgrid
converter from/to on-grid to/from off-grid when the converter
is working in two different modes. In the first transfer presented
method, the converter operates as a Current Source Inverter
(CSI) when on-grid and as a Voltage Source Inverter (VSI) when
off-grid. In the second transfer method, the converter is operated
as a VSI both, when operated on-grid and off-grid. The two
methods are implemented successfully in a real platform but the
later offers some advantage.
Induction heating of liquids with an L-LC resonant tank - Quirós Jacobo, Francisco Javier; Martín Segura, Guillermo; Heredero Peris, Daniel; Montesinos Miracle, Daniel
Induction heating (IH) systems are used in many applications because they
present many advantages compared other heating methods like quicker heating or
faster start-up. This paper studies the application of IH systems for liquid heating
using an L-LC resonant tank.
Design, management and comissioning of a utility connected microgrid based on IEC 61850 - Ruiz Alvarez, A.; Colet Subirachs, A.; Gomis Bellmunt, Oriol; Fernández Mola, José María; Alvarez Cuevas, F.; López Mestre, Joaquim; Sudrià Andreu, Antoni
This paper presents an approach to microgrid
automation. The microgrid is composed of three different nodes connected to the public electric grid, which are hardware
emulated with back-to-back converters. The microgrid is a flexible and weather independent test bed for testing different
control algorithms. The intelligence of the automation system is split in three hierarchical layers: the RMU layer, the iNode
layer and the iSocket layer. Communications among iNode and iSockets are according IEC 61850 standard.
The aims of the project is to comission a set of technologies and acquire experience in microgrid automation, IEC 61850
communications and power control algorithms in DER systems.
Control of a utility connected microgrid - Colet Subirachs, A.; Ruiz Alvarez, A.; Gomis Bellmunt, Oriol; Alvarez Cuevas, F.; Sudrià Andreu, Antoni
This paper describes the control algorithm of a utility connected microgrid, based on independent control of active and reactive power (PQ control) and working in centralized
operation mode. The microgrid under investigation is composed of three configurable units: a generation unit, a storage unit and a load. These units are interfaced with the microgrid through a
Voltage Source Converter (VSC) and are controlled by the nodes of the communication system by means of IEC 61850. A set of
tests have been conducted to evaluate the microgrid behavior.
A sensorless stable V/f control method for a five-phase PMSM - Sala Pérez, Pau; Galcerán Arellano, Samuel; Montesinos Miracle, Daniel
This paper presents a sensorless and stable control method for a five-phase permanent magnet synchronous motor (PMSM). At first, a model of a five-phase PMSM is presented. After that a stability study has been performed by the analysis of the eigenvalues of the state transition matrix of the linearized PMSM model about an operating point. The results show that the machine speed response is unstable for input frequencies below the machine rated frequency. Finally, an open-loop V/f stabilization algorithm which ensures the stability of the system over a wide range of speed is presented.
Modeling and validation of a flywheel energy storage lab-setup - Díaz González, Francisco; Sumper, Andreas; Gomis Bellmunt, Oriol; Villafafila Robles, Roberto
This work deals with the modeling, control and experimental validation of a flywheel test bench which is part of IREC’s lab-scale microgrid. The storage device has been
designed as a proof of concept. It is based on a low-speed rotating disk mechanically coupled to a Permanent Magnet Synchronous
Machine. The electrical power is exchanged with the external grid by means of a set of back-to-back power converters. These
power electronics control the speed of the machine, and thus the active power absorbed or injected by the device, and also
regulate the reactive power at the point of common coupling with the external grid. Vector...
Passive and Active Methods of Islanding for PV systems - Skocil, Tomas; Gomis Bellmunt, Oriol; Montesinos Miracle, Daniel; Galcerán Arellano, Samuel; Rull Duran, Joan
This paper presents a review of some techniques for islanding detection, especially by using inverter based DG applications and it also focuses on several islanding detection methods for a single- phase current-control voltage inverter working with a PV system connected into the grid. It is deliberated a single-phase inverter with maximum power of 5 kW. Islanding detection methods are investigated, simulated and evaluated in MATLAB / SIMULINK.
Requirements for EV charge stations with photovoltaic generation and storage - Cairó, Ignasi; Sumper, Andreas
With the increase in electric mobility, public and private charge facilities will be required to provide solutions adjusted to the actual needs and requirements. A new
methodology for dimensioning charge stations for electric vehicles (EVs) is presented in this paper. Such proposal is based on the Markov chains, and uses as output rates, the capabilities of the charge station in providing energy from the sun through
photovoltaic generation, stored energy in local batteries and also as a back-up the power grid. A numerical result is also presented for a better understanding of the process.
Multichannel high-power high-frequency converters for induction heating - Martín Segura, Guillermo; Sala Pérez, Pau; Montesinos Miracle, Daniel; Ferrater Simón, María Misericordia; López Mestre, Joaquim
This paper studies a converter structure based on the connection of basic topologies to form
a multichannel converter for induction heating applications. The aim of using basic topologies
is to provide a reduction of design time, the cost derived from higher volume production, stock
components and installation and maintenance work. First, the aim of the paper is introduced,
afterwards the topology is discussed and then implemented