Design of an Optimized FOPID Controller for Modern Power Converters of Brushless DC Motor Based Electric Vehicles
Authors: Gunasekaran R, Saravanan C, Kavin R, Vanchinathan K
DOI: 10.37326/ajsev9.1/2081
Page No: 1-21
Abstract
The growing demand of clean energy along with the depletion of fossil fuel usage have paved the way for Electric Vehicles (EV) to emerge as a significant alternative in automobile sector. Reduction of air pollution and reliance of fossil fuels thereby improving energy security are termed as the primary goals of EV. The adopting of EV facilitates emission free transportation and addresses the environmental crisis caused due to climatic changes and pollution. The integration of EVs with renewable energy sources (RES) supports decarbonized energy production contributing to cleaner environment. The abundant availability in nature enables the solar system to be widely used for the integration with EVs. The intermittent nature of photovoltaic systems (PV) is solved by the inclusion of efficient DC-DC converters along with grid supply which in turn enables the constant power flow in the charging system. The main focus of this paper is to develop an effective charging system for EV which contributes a crucial role in achieving a pollution free future. An advanced Trans Z-source Luo converter technology is employed enhance the PV output voltage thereby reducing the required numbers of PV panels. The proposed converter exhibits the benefits like excellent efficiency, lesser voltage stress and high conversion range. The operation of the proposed converter is regulated with the aid of Lion Grey Wolf streamlined Proportional Integral (LGWO-PI) controller which considerably strengthens the converter function in terms of settling time, total harmonic distortion (THD) and peak overshoot. The output from the converter powers the EC after being transformed into AC by a voltage source inverter (VSI). A PI controller is utilized for precise speed control of the BLDC motor. At times of power unavailability from PV systems, a VSI fed grid is used to energize the BLDC motor. On the whole, the complete charging setup provides a constant power supply for EVs. The presented work is simulated using MATLAB and the outputs indicate the enhanced functioning of the charging system. Comparisons are carried out with existing converters and control approaches in which the proposed system delivers a reduced THD of 2.1% and an optimal efficiency of 97.6%.
