Showing papers on "Grid-connected photovoltaic power system published in 1976"
TL;DR: In this paper, the results of work accomplished in developing low cost, high efficiency dc to ac power conversion equipment for fuel cell powerplants to be used in two different commercial applications are described.
Abstract: This paper describes the results of work accomplished in developing low cost, high efficiency dc to ac power conversion equipment for fuel cell powerplants to be used in two different commercial applications. The first is for on-site power generation in the range of 10 to 500 kW and the second is for dispersed electric utility power generation in substations at a 26 MW power level. Performance data is presented on single-phase and three-phase prototype inverters in the first category. Work currently in progress on the 26 MW inverter is described including operational tests on a 500 kW unit delivering power into the lines of the Connecticut Light and Power Company. To accomplish the desired results, fast switching thyristors with low forward drop and high dv/dt are used.
4 citations
01 Sep 1976
TL;DR: In this article, a 40 watt experimental solar array was directly regulated by shorting out appropriate combinations of series and parallel segments of a solar array, and regulation switches were employed to control the array at various set-point voltages between 25 and 40 volts.
Abstract: A 40 watt experimental solar array was directly regulated by shorting out appropriate combinations of series and parallel segments of a solar array. Regulation switches were employed to control the array at various set-point voltages between 25 and 40 volts. Regulation to within + or - 0.5 volt was obtained over a range of solar array temperatures and illumination levels as an active load was varied from open circuit to maximum available power. A fourfold reduction in regulation switch power dissipation was achieved with series-parallel regulation as compared to the usual series-only switching for direct solar array regulation.
3 citations
30 Jun 1976
TL;DR: In this paper, a variety of economic and programmatic issues concerning the development and deployment of a fleet of space-based solar power satellites (SSPS) are discussed, including the costs, uncertainties and risks associated with the current photovoltaic SSPS configuration, and with issues affecting the development of an economically viable SSPS development program.
Abstract: A variety of economic and programmatic issues are discussed concerning the development and deployment of a fleet of space-based solar power satellites (SSPS). The costs, uncertainties and risks associated with the current photovoltaic SSPS configuration, and with issues affecting the development of an economically viable SSPS development program are analyzed. The desirability of a low earth orbit (LEO) demonstration satellite and a geosynchronous (GEO) pilot satellite is examined and critical technology areas are identified. In addition, a preliminary examination of utility interface issues is reported. The main focus of the effort reported is the development of SSPS unit production, and operation and maintenance cost models suitable for incorporation into a risk assessment (Monte Carlo) model (RAM). It is shown that the key technology area deals with the productivity of man in space, not, as might be expected, with some hardware component technology.
2 citations
01 Sep 1976
TL;DR: In this article, the economic value of solar thermal power plants to an electric utility under assumptions that are valid today is discussed. But the authors focus on reliability evaluation, economic evaluation, storage, system operation, and cost and design considerations.
Abstract: The findings of a study designed to fill the need for an electric utility to evaluate solar thermal power plants are summarized. Calculations are described which were used to compute the economic value of solar power plants to an electric utility under assumptions that are valid today. Topics covered are: reliability evaluation, economic evaluation, storage, system operation, and cost and design considerations. (MHR)
2 citations