Efficiency optimized AC charging waveform for GaN bidirectional PHEV Battery Charger

Author

Lingxiao Xue ; Mattavelli, Paolo ; Boroyevich, Dushan ; Hughes, Brian ; Burgos, Rolando

Author_Institution

CPES, Virginia Tech, Blacksburg, VA, USA

fYear

2014

fDate

26-28 Aug. 2014

Firstpage

1

Lastpage

10

Abstract

Sinusoidal charging can boost the power density of GaN-based battery charger with the penalty of dropped efficiency due to hard-switching. In this paper, different AC charging waveforms are investigated to achieve better charger efficiency with slightly increased DC link capacitance. It turns out that PWM-zero-off charging, which shut down DC/DC stage at zero part of the charging current waveform, can greatly reduce converter loss while keeping small DC link voltage ripple. Experiment results from GaN prototype verified the concept and 39% loss saving is demonstrated.

Keywords

III-V semiconductors; PWM power convertors; battery chargers; battery powered vehicles; gallium compounds; hybrid electric vehicles; optimisation; switching convertors; wide band gap semiconductors; AC charging waveform; DC link capacitance; DC link voltage ripple; GaN; PWM-zero-off charging; bidirectional PHEV battery charger; charging current waveform; converter loss; power density; sinusoidal charging; Batteries; Battery chargers; Capacitance; Capacitors; Gallium nitride; Loss measurement; Power generation; Battery charger; Gallium Nitride (GaN); High power density systems; Single phase system; Wide bandgap devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications (EPE'14-ECCE Europe), 2014 16th European Conference on

Conference_Location

Lappeenranta

Type

conf

DOI

10.1109/EPE.2014.6910869

Filename

6910869