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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 6    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 6,June 2012
Design Of Dc-dc Converter With Maximum Power Point Tracker Using Pulse Generating (555 Timer) Circuit For Photovoltaic Module[
Full Text(PDF, )  PP.869-878  
DC-DC boost converter, Maximum power point tracker, Photovoltaic module, Pspice; Pulse width modulation, Microcontrolle
Due to the decline in power of photovoltaic module as a result of changes in irradiation which affect the photovoltaic module performance, the design and implementation of DC-DC boost converter operating in continuous conduction mode with a Maximum power point tracker using a Microcontroller connecting a 555 timer circuit to generate Pulse Width Modulation (PWM) signal to established a constant output voltage was proposed. The system is a close loop system and continuously measure samples of current and voltage from output of photovoltaic module and reference voltage at the load (lead base light, 24V) to obtain instantaneous power. Base on this, the 555 timer circuit (pulse generator) constantly takes in DC voltage through a current source to control the duty cycle of the DC-DC boost converter. Pspice software was used to simulate DC-DC boost converter and compare simulation results with the practical operation of the design system.
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