The Experts below are selected from a list of 5154 Experts worldwide ranked by ideXlab platform
Abdelhamid Midou - One of the best experts on this subject based on the ideXlab platform.
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control of a dc dc converter by fuzzy controller for a solar Pumping system
International Journal of Electrical Power & Energy Systems, 2011Co-Authors: Nejla Mazouz, Abdelhamid MidouAbstract:Abstract The exploitation of the solar energy is very significant for the very sunny countries. Moreover the dryness phenomenon in these country is imposes more and more the use of Pumping Plants. The storage of the water in insulated basins from the wells has a double advantage. On the one hand, it is a technical storage solution of the solar energy collected by the photovoltaic panels. On the other hand, it is a hygienic way out to supply water for the rural population. In our work, we propose a technique for the identification of the maximum power point (MPP) based on fuzzy logic. This method is used to generate the cyclic ratio to operate the switcher within the maximum power of a photovoltaic array (PVA). For simulation purpose we made a complete modeling of the entire system. The system carried out consists of a photovoltaic array supplying, through a DC converter, a direct current (DC) engine coupled to a centrifugal pump. Our experimental bench consists of two principal units. A DC converter module composed of IGBT power transistors. And a processing module connected to a PC serial port, handling the input signals delivered by photovoltaic generator and controlling the power unit. The obtained experimental results confirm the simulation result which is very satisfactory and show the utility of the fuzzy controller for the optimization of the system.
Nejla Mazouz - One of the best experts on this subject based on the ideXlab platform.
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control of a dc dc converter by fuzzy controller for a solar Pumping system
International Journal of Electrical Power & Energy Systems, 2011Co-Authors: Nejla Mazouz, Abdelhamid MidouAbstract:Abstract The exploitation of the solar energy is very significant for the very sunny countries. Moreover the dryness phenomenon in these country is imposes more and more the use of Pumping Plants. The storage of the water in insulated basins from the wells has a double advantage. On the one hand, it is a technical storage solution of the solar energy collected by the photovoltaic panels. On the other hand, it is a hygienic way out to supply water for the rural population. In our work, we propose a technique for the identification of the maximum power point (MPP) based on fuzzy logic. This method is used to generate the cyclic ratio to operate the switcher within the maximum power of a photovoltaic array (PVA). For simulation purpose we made a complete modeling of the entire system. The system carried out consists of a photovoltaic array supplying, through a DC converter, a direct current (DC) engine coupled to a centrifugal pump. Our experimental bench consists of two principal units. A DC converter module composed of IGBT power transistors. And a processing module connected to a PC serial port, handling the input signals delivered by photovoltaic generator and controlling the power unit. The obtained experimental results confirm the simulation result which is very satisfactory and show the utility of the fuzzy controller for the optimization of the system.
S. Orloff - One of the best experts on this subject based on the ideXlab platform.
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PERFORMANCE OF ELECTRIC IRRIGATION Pumping Plants USING VARIABLE FREQUENCY DRIVES
Journal of Irrigation and Drainage Engineering, 1996Co-Authors: B. Hanson, Claus Weigand, S. OrloffAbstract:The constant revolutions per minute (RPM) of electric motors prevents adjusting the pump performance to match variable operating conditions, and thus the pump output is usually reduced or throttled with a valve in the discharge pipe. Variable frequency drives for electric motors have the potential to adjust the pump performance to match operating conditions by reducing motor and pump RPM. Field tests at five sites showed that the pump performance at the reduced RPM could reasonably match the throttled conditions at a reduced horsepower demand. However, Pumping Plants using a variable frequency drive should be operated at least 500–1,000 h per year to recoup costs.
Steve B. Orloff - One of the best experts on this subject based on the ideXlab platform.
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Variable-frequency drives for electric irrigation Pumping Plants save energy
California Agriculture, 1996Co-Authors: Blaine R. Hanson, Claus Weigand, Steve B. OrloffAbstract:The constant rpm (revolutions per minute) of electric motors prevents adjusting pump performance to match variable operating conditions, and therefore the pump output is usually reduced or throttled. Variable-frequency drives of electric motors have the potential to adjust pump performance to match operating conditions by reducing motor and pump rpm. Field tests at five sites showed that pump performance at the reduced rpm could reasonably match that under the throttled conditions, but at a much lower horsepower demand. However, for economic reasons, Pumping Plants using a variable-frequency drive should be operated at least 1,000 hours per year.
Claus Weigand - One of the best experts on this subject based on the ideXlab platform.
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Variable-frequency drives for electric irrigation Pumping Plants save energy
California Agriculture, 1996Co-Authors: Blaine R. Hanson, Claus Weigand, Steve B. OrloffAbstract:The constant rpm (revolutions per minute) of electric motors prevents adjusting pump performance to match variable operating conditions, and therefore the pump output is usually reduced or throttled. Variable-frequency drives of electric motors have the potential to adjust pump performance to match operating conditions by reducing motor and pump rpm. Field tests at five sites showed that pump performance at the reduced rpm could reasonably match that under the throttled conditions, but at a much lower horsepower demand. However, for economic reasons, Pumping Plants using a variable-frequency drive should be operated at least 1,000 hours per year.
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PERFORMANCE OF ELECTRIC IRRIGATION Pumping Plants USING VARIABLE FREQUENCY DRIVES
Journal of Irrigation and Drainage Engineering, 1996Co-Authors: B. Hanson, Claus Weigand, S. OrloffAbstract:The constant revolutions per minute (RPM) of electric motors prevents adjusting the pump performance to match variable operating conditions, and thus the pump output is usually reduced or throttled with a valve in the discharge pipe. Variable frequency drives for electric motors have the potential to adjust the pump performance to match operating conditions by reducing motor and pump RPM. Field tests at five sites showed that the pump performance at the reduced RPM could reasonably match the throttled conditions at a reduced horsepower demand. However, Pumping Plants using a variable frequency drive should be operated at least 500–1,000 h per year to recoup costs.
