DESIGN AND IMPLEMENTATION OF A PIEZO – ELECTROMAGNETIC HYBRID ENERGY HARVESTING FROM A VEHICLE SUSPENSION SYSTEM
Dr. Prajwal K. T.1, Dr. S. Nagaraja Rao1, Dr. Sachin S.1, Ms. Swathy Nair1, Dr. Suresh R.2
1Department of Electrical Engineering, 2Department of Mechanical Engineering
M S Ramaiah University of Applied Sciences, Bangalore – 560058, India
Abstract: The ever-increasing population has led to a growing need for clean energy and vehicle transportation. The majority of fuel energy is lost in the suspension system of road-bound automobiles. Vibration energy is the most significant portion of energy lost in vehicles. In this work, two technologies are being explored for harnessing vibration energy: electromagnetic induction and piezoelectric energy harvesting. A vibration sensitive device is designed using permanent magnets and piezoelectric strips using simulation model to harness vibration energy with the combination of piezo-electromagnetic hybrid energy harvesting. Simulation of cantilever beam under vibration is developed using COMSOL Multi-physics tool. The parametric analysis is performed with a simulation model. A prototype model is developed to validate with the simulation results. Results indicate that around 3.7V of voltage is extracted for 3Hz dominant frequency of vibration. The integration of piezo-electromagnetic harvester enhances the overall output power and efficiency. The harvested energy can be used to charge batteries and power the electronic systems of the vehicle.
Keywords: Energy Harvesting, Electromagnetic, Piezoelectric, Vibration