Indian Journal of Science and Technology
Year: 2018, Volume: 11, Issue: 17, Pages: 1-5
P. Nithya1 , P. T. Sivagurunathan1 , P. Ramakrishnan1 and N. Sathishkumar2
1 Department of Electronics and Communication Engineering, M. Kumarasamy College of Engineering, Karur – 639113, Tamil Nadu, India; [email protected], [email protected], [email protected]
2 Department of Electronics and Communication Engineering, Sri Ramakrishna Engineering College, Coimbatore – 641022, Tamil Nadu, India; [email protected]
*Author for correspondence
Department of Electronics and Communication Engineering, M. Kumarasamy College of Engineering, Karur – 639113, Tamil Nadu, India; [email protected]
Background/Objective: This paper presents a new digital control approach to track the Maximum Power Point (MPPT) for Potovoltaic (PV) systems. A photovoltaic power generation system requires an effective controller to overcome sudden changes to irradiance and to maximize its efficiency. Methods/Statistical Analysis: A new approach to MPPT based on voltage control was proposed, while a PI (Proportional Integral) controller was combined with the boost converter to adapt the duty cycle. Findings: The input voltage reference was adaptively perturbed with variable steps until the maximum power was reached. A state-space model was derived through the averaging method, with the control input being the duty ratio to regulate the pulse width modulator on the DC-DC boost converter. The proposed control scheme eliminated steady state oscillations around the working point area of the PV panel when there were rapid changes to the irradiance. Applications/Improvements: Furthermore, the PV system became more efficient, as proven by the sudden change in the radiation conditions for 0.3 seconds, where approximately 30% of energy could be saved.
Keywords: Controlled Mobility, Energy Efficiency, MANETs
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