Abstract
This study presents PV power based cuk converter for dc load application. The maximum power from the sun radiation is obtained by sun tracking and Maximum Power Point Tracking (MPPT). The sun tracking is implemented by the stepper motor control and MPPT is implemented by the Cuk converter and the load voltage is maintained constant irrespective of the variation in solar power. This technique improves the dynamic and steady state characteristics of the system. The simulation was done in MATLAB simulink and the experiments are carried out and the results are presented.
Highlights
Due to the demand of the fossil fuels, the photo voltaic technology was developed during the past two decades
The solar power is increased by sun tracking, Maximum power tracking or both (Tse et al, 2002) Fundamental dc-dc converters are Buck and Boost converter
A converter which operating in both the mode by varying the duty cycle of the switch is the Cuk converter provides continuous input and output dc current
Summary
Due to the demand of the fossil fuels, the photo voltaic technology was developed during the past two decades. Solar panel is the device used for the conversion of sun radiation to the electrical energy. It has the advantages of less maintenance, no wear problem and there is no noise pollution (Salameh and Taylor, 1990; Alghuwainem, 1992). In order to reduce the number of PV cell intermediate dc -dc converter are used to obtain maximum utilization of PV power (Salameh and Taylor, 1990; Appelbaum et al, 1992). The PV array is connected to the CUK converter and the maximum voltage is obtained by varying the duty cycle of the Mosfet switch
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