A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Electrical stand-alone water pumping
A wind turbine with variable voltage, variable frequency electrical output was selected to power a stand-alone pumping system. The AC system was selected because AC motors, in multiple kW sizes, can be more economical than DC motors. A wind turbine which produces electricity has a lower overall efficiency than a mechanical system, but offers more flexibility in adapting to varying load sizes and in site selection. The laboratory tests revealed that standard three-phase, AC induction motors will pump water when operating at 30 Hz and 85 V. A motor temperature rise of 40 Cel above ambient was not exceeded when power was supplied by the alternator. At rotor speeds of 120 and 150 r/min, peak motor efficiency equaled the efficiency achieved with conventional power. System efficiencies with load matching were equivalent to those obtained with utility power even though the V/f ratio was below that calculated from the motor's nameplate.
Electrical stand-alone water pumping
A wind turbine with variable voltage, variable frequency electrical output was selected to power a stand-alone pumping system. The AC system was selected because AC motors, in multiple kW sizes, can be more economical than DC motors. A wind turbine which produces electricity has a lower overall efficiency than a mechanical system, but offers more flexibility in adapting to varying load sizes and in site selection. The laboratory tests revealed that standard three-phase, AC induction motors will pump water when operating at 30 Hz and 85 V. A motor temperature rise of 40 Cel above ambient was not exceeded when power was supplied by the alternator. At rotor speeds of 120 and 150 r/min, peak motor efficiency equaled the efficiency achieved with conventional power. System efficiencies with load matching were equivalent to those obtained with utility power even though the V/f ratio was below that calculated from the motor's nameplate.
Electrical stand-alone water pumping
Selbsttaetig arbeitendes elektrisches Wasserpumpsystem
Vosper, F.C. (author) / Clark, R.N. (author)
1983
7 Seiten, 11 Bilder, 9 Quellen
Conference paper
English
Stand-Alone Solar Organic Rankine Cycle Water Pumping System and Its Economic Viability in Nepal
| DOAJ | 2015