TY - GEN
T1 - Design and evaluation of a 6.6 kW GaN converter for onboard charger applications
AU - Su, Gui Jia
AU - White, Cliff
AU - Liang, Zhenxian
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/8/18
Y1 - 2017/8/18
N2 - This paper presents a compact, lightweight, highly efficient, 6.6 kW isolated three-port DC-DC converter for onboard charger (OBC) applications. The converter was designed and fabricated using normally-off gallium nitride (GaN) transistors; a three-dimensional (3-D) printed cold plate; high-voltage heavy copper printed circuit board (PCB) power planes; low-voltage (14 V) and high-current PCB power planes; and a planar transformer. The prototype has a power density of 10.5 kW/L and specific power of 9.6 kW/kg. Test results show greater efficiency than a silicon-based counterpart, even at 2.5 times higher switching frequency. The isolated GaN converter was integrated with a 100 kW segmented traction inverter that uses silicon carbide MOSFETs and 3-D printed components to test the functionality as a level-2 OBC. Testing and evaluation of the integral onboard charging functionality was successfully completed at power levels up to 6.6 kW.
AB - This paper presents a compact, lightweight, highly efficient, 6.6 kW isolated three-port DC-DC converter for onboard charger (OBC) applications. The converter was designed and fabricated using normally-off gallium nitride (GaN) transistors; a three-dimensional (3-D) printed cold plate; high-voltage heavy copper printed circuit board (PCB) power planes; low-voltage (14 V) and high-current PCB power planes; and a planar transformer. The prototype has a power density of 10.5 kW/L and specific power of 9.6 kW/kg. Test results show greater efficiency than a silicon-based counterpart, even at 2.5 times higher switching frequency. The isolated GaN converter was integrated with a 100 kW segmented traction inverter that uses silicon carbide MOSFETs and 3-D printed components to test the functionality as a level-2 OBC. Testing and evaluation of the integral onboard charging functionality was successfully completed at power levels up to 6.6 kW.
KW - 3D printed heat sink
KW - gallium nitride (GaN) transistors
KW - integrated charger
KW - isolated converter
KW - onboard charger
UR - http://www.scopus.com/inward/record.url?scp=85029313970&partnerID=8YFLogxK
U2 - 10.1109/COMPEL.2017.8013335
DO - 10.1109/COMPEL.2017.8013335
M3 - Conference contribution
AN - SCOPUS:85029313970
T3 - 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics, COMPEL 2017
BT - 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics, COMPEL 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 18th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2017
Y2 - 9 July 2017 through 12 July 2017
ER -