Solar Electric Charge Controller and Portable
Power Supply
ABSTRACT:-
Our project is a device that will allow a
solar panel to efficiently recharge a DC battery. This is accomplished by
operating the solar panel at an optimal power level regardless of the battery
voltage. The controller will vary the voltage across the panel to find and
maintain the maximum power point. The circuitry also monitors the battery
voltage level and charges the battery using pulse width modulation techniques.
The device consists of a boost DC-DC converter, a microcontroller, a current
sensing microchip, a Liquid Crystal Display for data output, and a serial
computer interface for programming and data collection.
The main electronic components
of our product are the solar panel which provides power, the rechargeable
batteries which receive power, the circuitry to maximize the power transfer
between the two, and a LCD and two LEDs as outputs to the user. The circuitry
consists of a DC-DC converter, a Microchip 8051 micro controller, and a
computer serial port interface to program the microprocessor and receive data
output on a terminal program (such as HyperTerminal).
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