Encontrados 15 documentos, a visualizar página 1 de 2
Conversion of an internal combustion engine vehicle into an electric vehicle
Pedrosa, Delfim; Monteiro, Vítor; Gonçalves, Henrique; Exposto, Bruno; Pinto, J. G.; Afonso, João L.In this paper is described the conversion of an Internal Combustion Engine (ICE) vehicle into and Electric Vehicle (EV). The main steps of this conversion are briefly described, especially the standards to legalize EVs in Portugal, and the EV elements, mainly, the electric motor and its respective controller, and the batteries with the charging system. This paper also presents the modifications performed in t...
Development of a digital controller with data acquisition to a test bench for e...
Pedrosa, Delfim; Pereira, Rui; Gonçalves, Henrique; Exposto, Bruno; Monteiro, Vítor; Pinto, J. G.; Afonso, João L.The electric motors’ test benches are greatly used by electric motors manufacturers and drive system designers. In this paper it is described the conversion process of an older manually controlled test bench, in an automatic digitally controlled one with integrated data acquisition system. The renewed test bench is based in a two quadrant eddy current electromagnetic brake, in which the manual torque controller...
A simplified methodology for parameters measurement of an axial flux permanent ...
Pedrosa, Delfim; Gonçalves, Henrique; Exposto, Bruno; Martins, Júlio S.; Afonso, João L.The recent developments in the area of electric vehicles resulted in the growth of the interest for Axial Flux Permanent Magnet Motors, mainly because of their high power density. For the design of the motor drive it is of extreme importance to have the motor parameters, although many times the manufacturers do not provide them. To overcome this problem, in this paper is presented a methodology to obtain the pa...
Comparison of charging systems for electric vehicles and their impact on electr...
Monteiro, Vítor; Ferreira, João C.; Pinto, J. G.; Exposto, Bruno; Pedrosa, Delfim; Afonso, João L.This paper presents a comparison of four types of on-board batteries charging systems for Electric Vehicles (EVs) and Plug-in Hybrid Electric Vehicles (PHEVs), and their impact on the power quality of the electrical power grid. In the comparison are analyzed the features, the characteristics and the operation of each charging system, aiming their controllability and their impact on the electrical grid, mainly c...
Smart charging system of the electric vehicle CEPIUM
Monteiro, Vítor; Pedrosa, Delfim; Exposto, Bruno; Ferreira, João C.; Afonso, João L.In this paper is presented the development of a smart batteries charging system for the Electric Vehicle (EV) CEPIUM, aiming the integration of EVs in the future Smart Grids. The main features of the developed charging system are the mitigation of the power quality degradation and the bidirectional operation, as Grid-to-Vehicle (G2V) and as Vehicle-to-Grid (V2G). The batteries charging process is controlled by ...
Assessment of a battery charger for electric vehicles with reactive power control
Monteiro, Vítor; Pinto, J. G.; Exposto, Bruno; Gonçalves, Henrique; Ferreira, João C.; Couto, Carlos; Afonso, João L.Batteries of Electric Vehicles (EVs) and Plug-in Hybrid Electric Vehicles (PHEVs) have a large potential not only to provide energy for the locomotion of these vehicles, but also to interact, in dynamic way, with the power grid. Thereby, through the energy stored in the batteries, these vehicles can be used to regulate the active and the reactive power, as local Energy Storage Systems. This way, EVs can contrib...
Current-source shunt active power filter with periodic-sampling modulation tec...
Exposto, Bruno; Pinto, J. G.; Pedrosa, Delfim; Monteiro, Vítor; Gonçalves, Henrique; Afonso, João L.In this paper are presented experimental and simulation results of a developed Current-Source Three-Phase Shunt Active Power Filter compensating the currents of a non-linear load. The Shunt Active Power Filter controller, described in detail along the paper, relies in the p-q Theory to calculate the reference compensation currents and to regulate the DC-link inductance current. The regulation of the...
Experimental results of a developed single-phase thyristor switched capacitor
Exposto, Bruno; Manuel, Nuno; Pinto, J. G.; Monteiro, Vítor; Pedrosa, Delfim; Afonso, João L.In this paper are presented simulation and experimental results of a developed single-phase Thyristor Switched Capacitor (TSC), when it is compensating the power factor at the fundamental frequency (displacement power factor) of an electrical system with distorted voltage. The developed single-phase TSC can produce reactive capacitive power with 3 different values. The Thyristor Switched ...
Experimental and simulation results of a current-source three-phase shunt activ...
Exposto, Bruno; Pinto, J. G.; Pedrosa, Delfim; Gonçalves, Henrique; Afonso, João L.In this paper are presented experimental and simulation results of a Current-Source Three-Phase Shunt Active Power Filter, during its operation to compensate the currents a low power factor load and a nonlinear load. The Shunt Active Power Filter controller, described in detail along the paper, relies in the p-q Theory to generate the reference compensation currents and to regulate the DC-l...
Comparison of current-source and voltage-source shunt active power filters for ...
Pinto, J. G.; Exposto, Bruno; Monteiro, Vítor; Monteiro, Luís F. C.; Couto, Carlos; Afonso, João L.This paper presents the comparison between two three-phase Shunt Active Power Filters (SAPFs), one with Current-Source Inverter (CSI) and the other with Voltage-Source Inverter (VSI), which are used to compensate current harmonics and to control reactive power. The control algorithm of both SAPFs is based on the Instantaneous Reactive Power Theory (p-q Theory). The comparison here presented fo...
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