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Abstract

The first German utility interactive photovoltaic residential system has been developed and installed in a private residence; it is the result of a project managed by the Fraunhofer Institute for Solar Energy Systems (ISE) at Freiburg and sponsored by the Commission of the European Communities and several firms of German industry. In general the house is designed for optimum passive heat gain. At present, 30 m**2 of solar cells have been installed, 20 m**2 of them, however, behind glass. Consequently the DC output is being limited to 1.6 kW-p instead of a potential 5kW-p. A storage battery of the nickel-cadmium type (to store 10 kWh) has been designed and installed, however, in order to study the system without battery back-up it has not yet been put into service. Thus the solar generator feeds the energy converted directly into the public grid via an inverter, developed by the ISE especially for use in photovoltaic power supply systems with AC output. It has inherent safety functions and produces sine waves with low harmonic distortion. A five years' test period is planned in order to obtain all information needed on system's operation.

Additional information

Authors: BOPP G, FRAUNHOFER-INSTITUT FUER SOLARE ENERGIESYSTEME, FREIBURG (GERMANY);KOETHE H K, FRAUNHOFER-INSTITUT FUER SOLARE ENERGIESYSTEME, FREIBURG (GERMANY);SCHMID J FRAUNHOFER-INSTITUT FUER SOLARE ENERGIESYSTEME, FREIBURG (GERMANY), FRAUNHOFER-INSTITUT FUER SOLARE ENERGIESYSTEME, FREIBURG (GERMANY)
Bibliographic Reference: EUR 9991 EN (1985) MF, 51 P., BFR 150, BLOW-UP COPY BFR 255, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
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