Performance Optimization of an eCAR by Parametric Analysis

Abstract

In this paper, a method for performance optimization of an electric Car (eCAR) is proposed based on acceleration rate, maximum speed, and tractive force. Since the total tractive force is exerted by propulsion motor alone, the driving performance of an eCAR depends on the power of the propulsion motor and its control. The proposed pre-sizing methodology depicts the optimum power of the propulsion motor, and for the optimized motor the impact of road dynamics, acceleration rate, change in mass, and gear ratio on the eCAR’s drive range are analyzed. The proposed electric propulsion system is modeled and the performance characteristics are analyzed using MATLAB to validate the behavior of an eCAR propulsion.

Comparison of ANN- and GA-based DTC eCAR

“…The propulsion system of the eCAR incorporates several apparatuses such as a 35 kW, 100 Ah, 400 V Lithium-ion (Li-ion) battery stack, a 4 kW, 400 V AC/DC/AC bidirectional on-board charger, a 90 kW threephase squirrel-cage induction motor, an intelligent ANN-and GA-integrated SVPWM-based microcontroller, a two-level IGBT-based three-phase VSI, a simple gear with a gear ratio of 10.8, a differential transmission, and a drive axel. The mass of the vehicle is 1680 kg, with a frontal area of 1.2 square meters and a wheel radius of 0.2794 m. A parametric analysis is performed for pre-sizing the components of the eCAR powertrain to increase the acceleration rate and driving range [25]. The components of the eCAR are modeled with the help of mathematical equations, and the vehicle dynamics are considered by adding force due to inertia, aerodynamic drag, rolling friction, and hill climbing or a gradient slope, where all these forces are represented in terms eCAR parameters [26].…”

Dynamic Behavior and Force Analysis of the Full Vehicle Model using Newmark Average Acceleration Method

“…A quarter-car model with a PID controller used to minimize the vertical body acceleration was prepared in [7]. A method was developed in [8] for the performance optimization of an eCAR considering the impact of road dynamics, acceleration rate, mass changing and gear ratio. According to the results, the proposed method was efficient and simple and could be applied to any eCAR model.…”

Performance Assessment of the BLDC Motor in EV Drives using Nonlinear Model Predictive Control

“…Electric vehicles (EVs) are a zero-emission solution for vehicular technology. They are the attractive alternative to the traditional Internal Combustion (IC) engines [1]. The, technology advancement in EV and energy management solutions are the top priority areas of the relative research.…”

“…The, technology advancement in EV and energy management solutions are the top priority areas of the relative research. Traction motor, the main component of the power-train, consumes the most power from the batteries [1]. Several types of electric motors are used for the traction in EVs, such as Induction Motors (IMs), Permanent Magnet Motors (PMMs), Switched Reluctance Motors (SRMs), etc.…”