Objective
THE PURPOSE OF THE PROJECT IS TO DESIGN AND BUILD AN INTEGRATED SYSTEM FOR WATER PUMPING IN PHOTOVOLTAIC PLANTS.
THIS SYSTEM IS CONSTITUTED BY: A MIXED-FLOW CENTRIFUGAL PUMP, A MAGNET DC ELECTRIC MOTOR WITH BRUSHES, AN ELECTRICAL CONTROL SYSTEM. THE SYSTEM SHOULD HAVE HIGHER EFFICIENCY THAN COMMERCIAL ONES, IN ORDER TO REDUCE THE PANEL SURFACE AND THEREFORE THE COST OF THE PHOTOVOLTAIC PLANT.
THE CENTRIFUGAL PUMP IS A MULTI-STAGE MIXED-FLOW CENTRIFUGAL PUMP, WITH AXIAL-RADIAL IMPELLER BLADES. THE FEATURES OF THE PUMP ARE:
- CAPACITY: 3KG/S IN NOMINAL CONDITIONS;
- HEAD (PER STAGE): 7-8 M;
- ANGULAR VELOCITY: 3800 RPM IN NOMINAL CONDITIONS.
THE PUMP IS CONSTITUTED BY AN OPEN IMPELLER WITH THREE DIMENSIONAL BLADES AND A VANED DIFFUSER FOR ENERGY RECOVERY.
THE EFFICIENCY OF THE CENTRIFUGAL PUMP IS EXPECTED TO BE OVER 60%. AN OVERALL VIEW OF THE PUMP IS SHOWN IN THE FIGURE.
TWO DC ELECTRIC MOTORS WILL BE CONSIDERED; THE FIRST HAS AROUND 1 KW POWER, THE SECOND AROUND 4.3 KW POWER. BOTH OF THEM HAVE THE FOLLOWING FEATURES:PRESENCE OF BRUSHES (LONG DURATION, OVER 5000 WORKING HOURS), FLAT TYPE, "IRONLESS ROTOR",HIGH EFFICIENCY (OVER 90%), PERMANENT MAGNET (COLUMNAR AL-NI-CO, WITH VERY HIGH MAGNETIC FLUX).
THE DC MOTOR HAVING AROUND 1 KW POWER IS EQUIPPED WITH A HEAT-PIPE COOLING SYSTEM WHICH ALLOWS THE REUCTION OF THE TEMPERATURE INSIDE THE MOTOR. A PHOTOGRAPH OF THE TEST BED FOR 1 KW P.M. DC MOTOR IS SHOWN.
THE ELECTRONIC CONTROL SYSTEM IS NECESSARY TO OPTIMIZE THE EXPLOITATION OF THE AVAILABLE ENERGY. IT IS CONSTITUTED BY LOW CONSUMPTIONS NMOS AND CMOS COMPONENTS. THE SYSTEM IS EQUIPPED WITH AN EPROM MEMORY MICROPROCESSOR FOR A STABLE MEMORIZATION OF THE PROGRAMME. THE MEADASUREMENTS TO BE MADE BY MEANS OF AN ANALOGICAL PROCEDURE CONCERN: MOTOR SUPPLY CURRENT, MOTOR SUPPLY VOLTAGE, PUMP DISCHARGE PRESSURE, MOTOR TEMPERATURE, SOLAR RADIATION.EASUREMENTS TO BE MADE BY MEANS OF AN ANALOGICAL PROCEDURE CONCERN: MOTOR SUPPLY CURRENT, MOTOR SUPPLY VOLTAGE, PUMP DISCHARGE PRESSURE, MOTOR TEMPERATURE, SOLAR RADIATION. CURR.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering control systems
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering computer hardware computer processors
- engineering and technology mechanical engineering thermodynamic engineering
- natural sciences earth and related environmental sciences atmospheric sciences meteorology solar radiation
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Coordinator
50047 Prato Firenze
Italy
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