Employing Electromagnetic Actuator to Harvest Energy Through a Variable-Length Pendulum

Abstract

This article explores the application of electromagnets in energy harvesting via a variable-length pendulum system. Harnessing the principles of electromagnetism, the study investigates the efficiency and feasibility of utilizing electromagnetic forces to extract energy from the motion of a pendulum with variable length, employing sinusoidal excitation as a means for vibrating machinery. This approach enables a more significant number of oscillations, consequently leading to a higher power output. The research investigates various aspects, including the design, implementation, and performance analysis of the electromagnet-based energy harvesting system. Through theoretical modeling, the article provides insights into the potential of electromagnets to generate sustainable energy from oscillatory motion. The findings show that up to 0.25W can be generated, providing power for small devices such as phone chargers and sensor units. The findings contribute to advancing renewable energy technologies and offer promising avenues for developing efficient and environmentally friendly energy harvesting mechanisms.

Variable-Length Pendulum-Based Mechatronic Systems for Energy Harvesting: A Review of Dynamic Models

“…Electromagnetic devices attached to a variable-length pendulum can also generate voltage by converting the mechanical energy into electrical energy [17,48,72]. Electromagnetic induction occurs when a varying magnetic field generates an electromotive force (EMF) or voltage in a conductor [73][74][75], thus forming the basis for the operation of electromagnetic generators.…”