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- W994592102 abstract "This diploma thesis deals with the design and construction of a buck type, unity power factor rectifier intended for electric vehicle battery charging. The work was conducted in the Electromechanical Energy Conversion Laboratory, placed at the Department of Electrical and Computer Engineering of the University of Patras.The main purpose of this thesis is to construct a three-phase buck-type rectifier which meets with the requirements for low input current harmonics established by international regulations. The ability to operate under unity power factor derives from the control method of the converter. The converter will be also performing the task of a battery charger. Therefore, the overall system should be able to provide control of the output voltage and current and adjust its operation to the charging profile and the type of the battery used.Initially, the significance of power factor correction in modern electrical systems is mentioned and control methods as well as the most commonly used rectifiers for unity power factor operation are presented.Then, a brief reference to the batteries as energy storage means is made and charging methods and devices are presented. Certain issues related to charging speed and battery life are approached. The final stage is the presentation of the batteries installed in the electric vehicle of the Laboratory and the selection of the appropriate charging profile based on the technical specifications of the manufacturer.The next step is the presentation of the three-phase rectifier which realizes the selected charging profile and the control method in order to achieve sinusoidal input currents .Both the electronic power converter as a battery charger and the closed-loop control circuit are simulated using Simulink of Matlab .The analysis, design and the construction of all electrical and electronic circuits required for the proper operation of the converter is described and the programming logic of the microcontroller that coordinates the control is presented.Finally, experimental tests are performed in order to check the proper functioning of the overall constructed system and detect any deviations between theory and practice." @default.
- W994592102 created "2016-06-24" @default.
- W994592102 creator A5017124530 @default.
- W994592102 date "2014-03-17" @default.
- W994592102 modified "2023-09-27" @default.
- W994592102 title "Μελέτη και κατασκευή φορτιστή συσσωρευτών, με διόρθωση του συντελεστή ισχύος, ελεγχόμενου από μικροελεγκτή" @default.
- W994592102 hasPublicationYear "2014" @default.
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