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Development of a microprocessor controller for stand-alone photovoltaic power systemsA controller for stand-alone photovoltaic systems has been developed using a low power CMOS microprocessor. It performs battery state of charge estimation, array control, load management, instrumentation, automatic testing, and communications functions. Array control options are sequential subarray switching and maximum power control. A calculator keypad and LCD display provides manual control, fault diagnosis and digital multimeter functions. An RS-232 port provides data logging or remote control capability. A prototype 5 kW unit has been built and tested successfully. The controller is expected to be useful in village photovoltaic power systems, large solar water pumping installations, and other battery management applications.
Document ID
19860012508
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Millner, A. R.
(TriSolar Corp. Bedford, MA, United States)
Kaufman, D. L.
(TriSolar Corp. Bedford, MA, United States)
Date Acquired
September 5, 2013
Publication Date
June 1, 1984
Subject Category
Energy Production And Conversion
Report/Patent Number
DOE/NASA/0310-1
NAS 1.26:174723
NASA-CR-174723
Accession Number
86N21979
Funding Number(s)
CONTRACT_GRANT: DEN3-310
CONTRACT_GRANT: DE-AI01-79ET-20485
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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