Analysis of Power Regenerative Shock Absorber in Passenger Car

Abstract

In this analysis, the modelling of a regenerative shock absorber in passenger car suspension system has been studied. The purpose of the conventional shock absorber in a vehicle’s suspension system is to reduce the vibration by dissipating the energy stored in the spring as heat to the surroundings. To recover the wasted energy from damper into electrical energy an inventive regenerative shock absorber is simulated. A mechanical motion rectifier is used to convert the suspension displacement into uni-directional rotation of the generator. A quarter car Simulink model of the power regenerated shock absorber was developed and simulated in order to evaluate the amount of the power regenerated. The dynamic performance of shock absorber is integrated into suspension system where the graphs are plotted with the parameter of road profile and vehicle speed. The mathematical model achieved an overall efficiency of 60% with the average of 40 watts.