Non-Ideal Two-Level Battery Charger-Modeling and Simulation

TL;DR

This paper analyzes a two-level electric vehicle battery charger, emphasizing detailed modeling, simulation, and control strategies to optimize efficiency and performance considering non-idealities.

Contribution

It introduces a comprehensive modeling and control approach for a two-level battery charger, accounting for nonlinearities and non-idealities to improve design and operation.

Findings

Nonlinearities significantly affect charger efficiency.

Robust PI control improves current regulation.

Precise component sizing enhances performance.

Abstract

This study presents a comprehensive analysis of a two-level battery charger for electric vehicles, focusing on modeling, simulation, and performance evaluation. The proposed charger topology employs two switches operating complementarily, along with essential components such as inductors, capacitors, and batteries. Detailed modeling in steady-state and dynamic regimes reveals the influence of nonlinearities, particularly switch and energy storage element characteristics, on charger efficiency and performance. Efficiency calculations highlight the significance of precise modeling and control strategies. Controller synthesis involves designing a robust proportional-integral compensator for effective battery charging current regulation. Analysis of non-idealities underscores the need for accurate component sizing and control strategies. The findings provide valuable insights for optimizing charger design and control, with implications for enhancing electric vehicle performance and reliability.