Berlin 2008 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 17: Poster I

HL 17.23: Poster

Montag, 25. Februar 2008, 16:30–19:00, Poster D

Investigations of the ability of photovoltaic solar power generators to receive RF radiation — •Markus Drapalik and Viktor Schlosser — Department of Electronic Properties of Materials, Faculty of Physics, University of Vienna, Austria

The installation of an electrical power generator of 1 MW_p operated by photovoltaic modules occupy an area of approximately 7000 m². Effective electrical shielding of receiving, reflecting, transmitting and emitting RF radiation of the components is very limited due to the necessity to capture as much incoming solar radiation as possible. Semiconducting pn-junctions which are the basic components of a photovoltaic power generator can act as simple RF receivers. Received electromagnetic radiation cause an increased level of electrical noise within the system which can affect the electronic components for power conditioning. Beside light intensity fluctuations RF radiation contributes to the generation and reemission of RF noise to the environment. Purpose of the present work is to investigate the ability of single solar cells and small solar modules to receive RF signals in the range of 10 Hz to 12 GHz. The amplitude modulated high frequency signal of a RF generator unit is coupled into an antenna which is placed close to the photovoltaic device. The solar power generator’s output is connected in parallel to an elctrical load and to a highly sensitive two phase lock in amplifier which allows us to detect the phase resolved modulated response of multiple harmonics of the modulation frequency which is chosen in the range of 1 kHz. First results of the investigations will be presented and discussed.