D19.2 - Design and Control of a GaN-Based High-Frequency Converter for Low-Voltage Fuel Cell Electric Vehicle with Extreme Voltage Gain

Thursday, March 26, 2026

12:00 PM - 1:45 PM CT

Location: Hemisfair Ballroom

Technical Dialogue Presenter(s)

Sang Min Lee (he/him/his)

Sungkyunkwan University

Presentation

Co-Author(s)

Hyeon Soo Kim

Sungkyunkwan University
Yun Seong Hwang

Sungkyunkwan University
Seung Hyun Kang

Sungkyunkwan University
Ju-A Lee

Sungkyunkwan University
JL

Joo Seung Lee

Hyundai Motor Company
JK

Ju Han Kim

Hyundai Motor Company
JP

Jeong Hee Park

Hyundai Motor Company
BL

Byoung Kuk Lee

SungKyunKwan University

This digest proposes a DC-DC converter with extreme voltage gain suitable for a 55kW-rated fuel cell electric vehicle (FCEV) with fuel cell (FC) stack in the range of 50 to 150V to enhance cost effectiveness. The proposed converter can achieve a voltage gain more than 10 times, which satisfies the voltage range of 350 to 650V for driving motor even with a low FC stack voltage around 100V. Additionally, the efficiency of proposed converter is measured over 96% under maximum power conditions. The operational modes according to the duty ratio are theoretically analyzed, and its feasibility is verified through experimental results of a 2.6kW prototype.