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Adaptive self-tuning neurocontrol
Potočnik, Primož; Grabec, Igor - In: Mathematics and Computers in Simulation (MATCOM) 51 (2000) 3, pp. 201-207
A novel approach to adaptive direct neurocontrol is discussed in this paper. The objective is to construct an adaptive control scheme for unknown time-dependent nonlinear plants without using a model of the plant. The proposed approach is neural-network based and combines the self-tuning...
Persistent link: https://www.econbiz.de/10011050452
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Determination of magnetic field constant of DC permanent magnet motor powered by photovoltaic for maximum mechanical energy output
Kolhe, Mohanlal; Kolhe, Sunita; Joshi, J.C. - In: Renewable Energy 21 (2000) 3, pp. 563-571
photovoltaic (PV) array. The important parameter of DC permanent magnet (DC PM) motor is magnetic field constant. The method for …
Persistent link: https://www.econbiz.de/10010805474
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Geometrical prediction of maximum power point for photovoltaics
Kumar, Gaurav; Panchal, Ashish K. - In: Applied Energy 119 (2014) C, pp. 237-245
It is important to drive solar photovoltaic (PV) system to its utmost capacity using maximum power point (MPP) tracking …
Persistent link: https://www.econbiz.de/10010743639
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Estimation of the maximum power and normal operating power of a photovoltaic module by neural networks
Bahgat, A.B.G; Helwa, N.H; Ahamd, G.E; El Shenawy, E.T - In: Renewable Energy 29 (2004) 3, pp. 443-457
operating power (NOP) of a photovoltaic (PV) module. Two neural networks are developed; the first is the maximum power neural …
Persistent link: https://www.econbiz.de/10010805065
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Differentiation of multiple maximum power points of partially shaded photovoltaic power generators
Mäki, Anssi; Valkealahti, Seppo - In: Renewable Energy 71 (2014) C, pp. 89-99
Partial shading conditions have a major effect on the electrical characteristics of photovoltaic (PV) power generators …
Persistent link: https://www.econbiz.de/10011045190
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A new analytical solar cell I–V curve model
Saetre, Tor Oskar; Midtgård, Ole-Morten; Yordanov, … - In: Renewable Energy 36 (2011) 8, pp. 2171-2176
A simple mathematical equation that can represent empirical I–V curves of individual solar cells, systems of solar cells and modules has been found. The basic model is determined by four parameters: the open circuit voltage, the short circuit current and two shape parameters. With the four...
Persistent link: https://www.econbiz.de/10011045522
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Analytical resolution of the electrical four-parameters model of a photovoltaic module using small perturbation around the operating point
Toledo, F.J.; Blanes, José M.; Garrigós, Ausiàs; … - In: Renewable Energy 43 (2012) C, pp. 83-89
In this paper, a new real-time curve fitting method for photovoltaic (PV) modules is presented. The method solves the … four-parameters photovoltaic cell model without scanning the entire I–V curve, without sensing irradiance or temperature … photovoltaic module parameters in any conditions of illumination, temperature or degradation. Once the electrical model is known, a …
Persistent link: https://www.econbiz.de/10011046344
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Enhancing the maximum power point tracking techniques for photovoltaic systems
Eldahab, Yasser E. Abu; Saad, Naggar H.; Zekry, Abdalhalim - In: Renewable and Sustainable Energy Reviews 40 (2014) C, pp. 505-514
efficiency of the solar photovoltaic system. This paper provides a review of the conventional maximum power point tracking …, a complete photovoltaic generator system is modeled and simulated using the MATLAB/SIMULINK package. Simulation results …. Consequently, the new technique has a significant improvement in energy extraction efficiency from the photovoltaic array to the …
Persistent link: https://www.econbiz.de/10011077269
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Innovative and precise MPP estimation using P–V curve geometry for photovoltaics
Kumar, Gaurav; Trivedi, Milind B.; Panchal, Ashish K. - In: Applied Energy 138 (2015) C, pp. 640-647
This paper elaborates a direct maximum power point (MPP) finding method for solar photovoltaics (PV) based on quadratic regression analysis of the geometry of the power–voltage (P–V) curve of a typical PV cell or module. This method works in two stages for determination of the MPP parameters...
Persistent link: https://www.econbiz.de/10011116091
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The Economic Inefficiency of Grid Parity: The Case of German Photovoltaics
Jägemann, Cosima; Hagspiel, Simeon; Lindenberger, Dietmar - Energiewirtschaftliches Institut (EWI), Universität zu … - 2013
Since PV grid parity has already been achieved in Germany, households are given an indirect financial incentive to invest in PV and battery storage capacities. This paper analyzes the economic consequences of the household's optimization behavior induced by the indirect financial incentive for...
Persistent link: https://www.econbiz.de/10010991541