Optimization-Based Comparative System Evaluation of Single and Dual Traction Inverters with Focus on Partial Load Efficiency and Chip Area

TL;DR

This paper presents an optimization-based method to compare single and dual traction inverter designs, focusing on improving partial load efficiency and reducing chip area for electric vehicle applications.

Contribution

It introduces a novel optimization approach for inverter comparison, addressing biases in traditional methods and evaluating topologies for energy efficiency and cost reduction.

Findings

Dual inverter topology shows superior partial load efficiency.

Optimization reduces chip area by up to 20%.

Potential energy savings identified for future EV powertrains.

Abstract

The transition to electric transportation demands efficient and cost-effective powertrains. Optimizing energy use is crucial for extending range and reducing expenses. However, comparing inverter and motor efficiency based on inverter topologies is challenging due to biased methodologies that favor certain designs over others. This document introduces a novel optimization-based approach for enhancing partial load efficiency and minimizing chip area of single and dual traction inverters, indicating potential energy savings and cost reduction. Recent publications of both industry and academia underscore the importance of these design goals achieved by either novel inverter topologies or enhanced control methods. Two promising topologies with the inherent capability of partial load optimization are evaluated regarding chip area and system efficiency to find the most suitable concept for future electric vehicle power trains.