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Optically powered data link for power system applications

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2 Author(s)
H. Kirkham ; Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA ; A. R. Johnston

The practicability of an optically powered data link has been demonstrated. The link has moderate bandwidth (1 kHz), accuracy (1%) and dynamic range (>60 dB) over a useful range of ambient temperatures. The link uses commercially available components, including a photodiode array fabricated using the dielectric isolation process in silicon. An application to the measurement of current in a high voltage line by means of a linear coupler is described, and experimental results are presented. Power transmission efficiency is presently low, at about 0.3% overall (electrical-to-electrical) and 5% optical-to-electrical

Published in:

IEEE Transactions on Power Delivery  (Volume:4 ,  Issue: 4 )