PASSIVE INERTIAL AMPLIFICATION FOR ENHANCED LOW-FREQUENCY VIBRATION ENERGY HARVESTING
Kattimani, R. S1., Suresh K2., Malaji, P. V1,
1Energy Harvesting and IoT Lab, BLDEAs V.P.Dr. P.G. Halakatti C E & Technology, Vijayapur, India
2Department of Mechanical Engineering, Government Engineering College, Talakal, Koppal, (Affiliated to Visvesvaraya Technological University, Belagavi), India
Abstract: This paper presents a comprehensive experimental investigation of a vibration energy harvesting system incorporating an inertial amplification mechanism. Conventional linear vibration energy harvesters suffer from narrow bandwidth and poor performance in low-frequency and broadband excitation environments. To overcome these limitations, a dual pendulum electromagnetic energy harvester coupled through a geometric inertial amplifier and a low stiffness coupling spring is proposed. The inertial amplifier introduces acceleration-dependent inertial forces that magnify relative motion without increasing physical mass, thereby significantly improving electromechanical conversion efficiency. Experimental results shown 80–150% improvement in harvested power compared to uncoupled systems. The proposed passive inertial amplification approach provides a scalable, efficient, and robust solution for low-frequency vibration energy harvesting.
Keywords: Inertial amplifier, Energy Harvesting, Pendulums, Coupling, electromagnetic
VOLUME 10 ISSUE 01 2026: 219 – 228