Abstract: . . .  Harrington, S.R., Dunlop, J.D., et al, “Evaluation of the Batteries and Charge Controllers in Small Stand-alone Photovoltaic Systems”, First World Conference on Photovoltaic Energy Conversion, Hawaii, Dec. 1994. http://www.sandia.gov/pv/lib/bospub.htm [2] Tom Hund, “Capacity Loss in PV Batteries and Recovery Procedures”, Sandia National Labs web site, Photovoltaic System Applications Dept., http://www.sandia.gov/pv/bos/batteries.htm [3] T. D. Hund, B. Thompson, “AMP-HOUR COUNTING CHARGE CONTROL FOR PHOTOVOLTAIC HYBRID POWER SYSTEMS”, IEEE PVSC, Sept. 1997, pp. 12811284. http://www.sandia.gov/pv/lib/bospub.htm 17 17 17 17 17 17 17 17 14 17 [4] T.D. Hund, “PV Hybrid Battery Testing”, NREL NCPV Program Review Meeting, April 17, 2000. http://www.sandia.gov/pv/ncpvprm.htm 4  . . .
. . .  design, charging strategies, battery technology for photovoltaic systems and reduce life-cycle cost using both laboratory and field test data. Fig. 1. Sandia’s Mt. Washington Telecommunication Site. DESIGN OF THE SYSTEM The Mt. Washington telecommunication site is designed to be a stand-alone 48-volt DC system with an engine generator backup for emergency power. The loads consist of DC to DC converters for 12-volt radio transmitters, a 48-volt microwave phone, and a small AC inverter for 120-volt lighting and room cooling fan. PV power is provided by three Solec 48-volt photovoltaic arrays at 50º tilt for a peak power of 1,600 watts. The PV array provides more than enough power for the 50 amphours (Ah) load even during the minimum solar resource month. The site has a conservative energy design to ensure adequate battery charging and minimal generator run time. With an average December solar resource at tilt 2 for Albuquerque of 5.5 kWh/m , the photovoltaic array is calculated to provide an . . .
. . .  J.D., et al, “Evaluation of the Batteries and Charge Controllers in Small Stand-alone Photovoltaic Systems”, First World Conference on Photovoltaic Energy Conversion, Hawaii, Dec. 1994. http://www.sandia.gov/pv/lib/bospub.htm [2] Tom Hund, “Capacity Loss in PV Batteries and Recovery Procedures”, Sandia National Labs web site, Photovoltaic System Applications Dept., http://www.sandia.gov/pv/bos/batteries.htm [3] T. D. Hund, B. Thompson, “AMP-HOUR COUNTING CHARGE CONTROL FOR PHOTOVOLTAIC HYBRID POWER SYSTEMS”, IEEE PVSC, Sept. 1997, pp. 12811284. http://www.sandia.gov/pv/lib/bospub.htm 17 17 17 17 17 17 17 17 14 17 [4] T.D. Hund, “PV Hybrid Battery Testing”, NREL NCPV Program Review Meeting, April 17, 2000. http://www.sandia.gov/pv/ncpvprm.htm 4  . . .
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