Enhanced Model of Hybrid Controller for Smooth Switching of Energy Sources Used in Electric Vehicle Application

Abstract

The sharing of load current to battery and ultracapacitor (UC) of the multiple energy storage structure (MESS) according to the vehicle dynamics is the main obstacle in the electric vehicles (EVs) application. In this paper, a control strategy technique is projected, to split the current between two sources based on the EVs requirement. A conventional/intelligent controller is used here to produce pulses to the DC-DC converter's corresponding load on the motor. A math condition-based controller (CBC) is designed by considering four individual math functions based on the speed condition of the motor, which is used to produce regulated pulse signals of the switches present in converters. The combination of CBC plus conventional/intelligent controllers makes a new hybrid controller, to achieve the main objective of the proposed work. The performance of the designed control strategy is investigated with four modes based on changed loads. Two different hybrid controllers CBC plus fuzzy logic (FLC) and CBC with proportional integral derivative (PID), and implemented and a comparative analysis was also made based on different time domain specifications by taking the speed curve as a reference.