Two-Phase Interleaved Boost Converter with MPPT Control for Solar PV System

Abstract: This paper presents the development of a solar photovoltaic energy conversion system using a two-phase interleaved boost converter integrated with a maximum power point tracking control strategy. Due to environmental variations, the output of a solar panel is non-linear and fluctuating, which reduces system efficiency if not properly controlled. To address this issue, a perturb and observe-based MPPT algorithm is implemented using a microcontroller to dynamically adjust the duty cycle of the converter. The proposed converter employs two parallel boost stages operating with a 180-degree phase shift, which significantly reduces input current ripple and output voltage fluctuations. The system continuously monitors voltages using sensing circuits and provides real-time feedback. The boosted output is stored in a battery and used to drive a DC load. Experimental prototype level results indicate improved performance in terms of voltage stability, ripple reduction, and power extraction efficiency.

Keywords: Solar PV, MPPT, Interleaved Boost Converter, PWM, Ripple Reduction, Arduino, Power Electronics, Perturb and Observe (P&O), Voltage Boosting, Battery Charging, Phase Shift Control.