Patent
Power supply for solar cell output - has adaptive DC=DC converter to raise or directly connect cell output to storage accumulators
TLDR
In this paper, a power supply unit for electrical equipment, primarily agricultural electric fences, using solar cells, dc/dc converter and storage batteries is described, where the output from the solar cells is controlled by an output switching transistor associated with the output diode.Abstract:
Power supply unit for electrical equipment, primarily agricultural electric fences, using solar cells, dc/dc converter and storage batteries. The dc/dc converter circuit also regulates the output from the solar cells for optimum performance, i.e. supply to equipment and charging batteries under sunny and cloudy conditions but allowing discharge to power the equipment at night and during rainy weather. The dc/dc converter (11) raises the lower voltage output (U1) from the solar cells (4), under adverse light conditions, to the value required (U2) for charging the storage accumulators (5). The converter also charges the accumulators directly via the primary (1) of the converter transformer and a diode (8) when the solar cell (4) output exceeds the accumulator (5) potential under favourable conditions. Operation is controlled by an output switching transistor (2) associated with the output diode (8) and by the converter internal circuitry (13).read more
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