Design of electrical drive for fully electrical heavy-weight trucks

Abstract

In recent years, the global transportation industry has been moving toward electrification, with electrification of heavy-duty freight vehicles becoming a particularly important research direction for reducing carbon emissions and improving energy efficiency. However, current electric heavy-duty trucks still face many challenges due to limited battery energy density, high power requirements of the drive system, and the lack of standard motors optimized specifically for heavy-duty electric trucks in the existing market. The goal of this thesis is to design an efficient electric drive system for heavy-duty electric trucks, aiming to optimize power performance, range, and energy efficiency.

The work investigates the power system of an electric heavy-duty truck and analyzes its key components, including the motor, transmission, inverter, and battery system. Based on the typical driving conditions of European highways, the paper calculates the load demand of the vehicle and estimates the required motor power, torque, and battery capacity. Subsequently, the most reasonable motor solution is selected by comparing different types of drive motors and combining factors such as efficiency, power density, and cost.

This study provides a systematic approach and technical solution for the design of electric drive systems for electric heavy-duty trucks, which can be used as a reference for the development of future electric heavy-duty trucks.