Community Research and Development Information Service - CORDIS


The 50 KWp photovoltaic power station on Fota Island in Cork Harbour is designed to operate in a stand-alone mode, i.e. to supply electrical energy to the dairy farm independent of the utility grid. As well as operating independent of the utility grid the station must operate at its highest efficiency while ensuring that each unit in the station is protected from faults. To meet these requirements a microcomputer is used to control the station's operations. The microcomputer consists of a MOTOROLA 6800 microprocessor system, computer terminal, printer and a magnetic tape recorder. As well as controlling the photovoltaic power station the microcomputer monitors and displays data on the printer, allows changes of operating parameters via computer terminal, stores desired data on magnetic tape and performs tests on hardware interface to the microprocessor. The 24K of software for the microcomputer is stored in EPROMs and 8K of RAM is required for the system's operations. This report describes the development of the microcomputer to perform these operations. The main control operations described are: (1) Battery charging using the solar array (2) Load supply via inverters (3) Utility grid interface with the photovoltaic system. The report also describes the microcomputer hardware, the monitoring system, the data recording system and the fault debugging facilities of the microcomputer.

Additional information

Bibliographic Reference: EUR 9949 EN (1985), MF, 98 P., BFR 150, BLOW-UP COPY BFR 490, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
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