查看更多>>摘要:By a News Reporter-Staff News Editor at Robotics & Machine Learning Daily News Daily News-Investigators publish new report on Ro botics. According to news reporting from Lexington, Kentucky, by NewsRx journali sts, research stated, "A BSTRACT. Continuous in -field robotic and automated sys tems are challenged by the need for a continuous supply of power." Financial support for this research came from National Institute of Food and Agr iculture, U.S. Department of Agriculture, Hatch-Multistate Program. The news correspondents obtained a quote from the research from the University o f Kentucky, "This off -grid power supply can be diesel, gasoline, propane, or al ternative energy sources like solar or wind. This study investigates the require d solar panel arrays and energy storage capacities for an off -grid solar -batte ry power supply system. This study used 22 years of historical weather data from Lexington, Kentucky, and processed it with the National Renewable Energy Labora tory's System Advisor Model to model hourly energy output from solar panel array s of 2 kW, 3 kW, 4 kW, 5 kW, 10 kW, 15 kW, and 20 kW. This was combined with an energy storage model (simulated battery capacities of 5 kWh, 10 kWh, 15 kWh, 20 kWh, 30 kWh, 40 kWh, 50 kWh, and 60 kWh) and an energy use model (simulated dail y energy demands of 3.6 kWh, 6 kWh, 12 kWh, 18 kWh, and 24 kWh) to determine whi ch systems could operate over the entire 22 years without reaching critical mini mum levels. For a 3.6 kWh daily energy demand, 32 combinations of solar panel ar rays and battery capacities remained above critical levels, while this was only 12 combinations for a 6 kWh daily energy demand and no combination could support larger energy demands. An example a feasible system to support a 6 kWh energy d emand is one that uses a 15 kW panel array (42 standard panels with an approxima te system hardware cost of $22,650) and 30 kWh of energy storage ca pacity (which with lead acid batteries would cost $11,661 and requi re a volume of 300 L). There is a tradeoff between solar panel array size and ba ttery capacity so other feasible systems can be realized by increasing one to ma ke up for reductions in the other variable. Additionally, limiting system operat ion to March through October can reduce the size of the required panel array (to between 33% to 67% of the original size) or energy storage capacity (to between 40% to 67% of the origi nal capacity) for a given daily energy load. The size of the solar battery syste m could be further decreased by adding an emergency generator that uses no more than 50 kg of propane annually. Battery capacities could be reduced by 17% to 38% compared to the original system, and the solar panel arrays could be reduced by 13% to 15% compared to the orig inal. Specific reduction amounts depended on the specific configuration of the o riginal system and the daily load level that had to be supported. A system that only operated from March through October with a backup generator could also supp ort the 12 and 18 kWh daily energy demands, which could not be supported by the original system. Even with limiting operation to March through October and using an emergency generator, the minimal battery capacity was at least 2.5 times lar ger than the daily energy demand, and the solar panel array had to be large enou gh that the nominal output would provide the daily energy demand in 3 hours of f ull sun. However, because of the trade-off relationship, these minimums cannot b e attained together."