Design and Control of a MEMS-Based Multi-Source Energy Harvesting System using Buck-Boost Converter for Enhanced Power Management

Abstract

This paper presents the design and control of a multi-source energy harvesting system that integrates solar panels and vibrational energy harvesters with a Buck-Boost converter to maximize energy extraction and power management. The proposed system captures energy from variable sources, effectively converting it into usable power stored in a lithium-ion battery with a capacity of 2.4 kWh. A detailed modeling approach is developed for the Buck-Boost converter, highlighting its capability to handle fluctuating input voltages from diverse sources. Two control strategies, Proportional-Integral (PI) and Fuzzy Logic Controllers, are designed to optimize the converter's performance, ensuring maximum power conditioning and stability under changing environmental conditions. Simulation results demonstrate the effectiveness of the proposed system, with a comparative analysis showing the Fuzzy Logic Controller's superior performance in managing nonlinearities and dynamic response. The study confirms the suitability of the Buck-Boost converter in multi-source energy harvesting applications, enhancing overall system efficiency and reliability in outdoor and industrial settings.