T01.8 - Optimized TPS with New Symmetric Mode Boundaries for Bidirectional DAB Converters in Ultra-Wide Range SiC EV Charging Applications

Tuesday, March 24, 2026

11:20 AM - 11:40 AM CT

Location: 214A

Technical Lecture Presenter(s)

Mahmoodreza Eskandarpour Azizkandi, MS (he/him/his)

North Carolina State University

Presentation Paper

Co-Author(s)

Wensong Yu, PhD

NC State Univeristy
Md Tanvir Ahammed, MS

NC State University
LL

Liming Liu

Eaton
HK

Hongrae Kim

Eaton Corporation

This paper proposes a novel optimized triple‑phase‑shift (TPS) with symmetric mode boundaries for bidirectional dual-active-bridge (DAB) converters, enabling practical and efficient ultra‑wide voltage range (150-900 V) and high frequency (150 kHz) operation for SiC‑based EV chargers. Unlike state‑of‑the‑art TPS methods, which suffer from asymmetric mode plots, complex multi‑case equations, lack of reverse power flow coverage, and impractical real‑time implementation, the proposed approach defines a normalized voltage ratio and absolute normalized power to unify and cover both forward and reverse power flow under a single, super-simplified, and computationally efficient control law and reveal a symmetrical relationship between buck and boost regions, eliminating the need for separate equations. Experimental validation on a 12 kW, 150 kHz prototype demonstrates the proposed TPS strategy enables full ZVS even at very low power, and fast real-time execution—confirming its practicality for SiC EV charging applications.