Battery, Ultra-capacitor based Hybrid Energy Storage System (HESS) for EV applications with PI and Fuzzy logic controllers

The extensive use of vehicles based on IC engines has contributed to serious effects on the environment and accelerated depletion of fossil fuel reserves which has led to a rapid increment in fuel cost over the past few decades. By consideration of these undesirable effects, the automotive industry will move towards the electrified drivetrains for obtaining zero-emission and higher efficiency. In electrified vehicles, the drive is coupled entirely partially by e-motors powered by energy storage sources. The choice of the simple structured HESS topology is to make a better understanding of power flow and controlling circuits based on limits of existing energy storage sources and contribute to the electrification of the drive. The main intention of this paper, the excessive current which is required by the motor is to draw from the ultra-capacitor without burdening of battery. This will improve the efficiency of the storage sources and also smooth running of the drive. This document examines the feasibility and capacity of a HESS which integrates the battery and ultra-capacitor units and controlling through PI and Fuzzy controllers