TY - GEN
T1 - A Boost-Half Bridge-based Single-Stage E-capless EV Charger
AU - Tat-Thang, L. E.
AU - Lee, Jaeyeon
AU - Choi, Sewan
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - In this paper, a boost-half bridge-based single-stage E-capless converter is proposed for EV chargers. The converter has the conventional advantages of bridgeless totem pole structure, electrolytic capacitor less with HF isolation, and no zero-crossing current spike. Besides that, the proposed converter is shown to have a wider zero-voltage switching range compared to the conventional topology. A harmonic injection method is proposed to not only improve THD to less than 5% under the whole load range but also extend the ZVS range of the converter under a wide voltage range. The converter can achieve higher efficiency under the light load with the shedding capability, which helps to reduce the switching loss by a half. Experimental results from a 1.5kW prototype are implemented to validate the proposed concepts.
AB - In this paper, a boost-half bridge-based single-stage E-capless converter is proposed for EV chargers. The converter has the conventional advantages of bridgeless totem pole structure, electrolytic capacitor less with HF isolation, and no zero-crossing current spike. Besides that, the proposed converter is shown to have a wider zero-voltage switching range compared to the conventional topology. A harmonic injection method is proposed to not only improve THD to less than 5% under the whole load range but also extend the ZVS range of the converter under a wide voltage range. The converter can achieve higher efficiency under the light load with the shedding capability, which helps to reduce the switching loss by a half. Experimental results from a 1.5kW prototype are implemented to validate the proposed concepts.
KW - boost half-bridge
KW - dual-active-bridge
KW - interleaved
KW - phase-shedding
KW - Single-stage AC-DC converter
KW - totem-tole bridgeness PFC
KW - zero voltage switching
UR - http://www.scopus.com/inward/record.url?scp=85144016767&partnerID=8YFLogxK
U2 - 10.1109/ECCE50734.2022.9948206
DO - 10.1109/ECCE50734.2022.9948206
M3 - Conference contribution
AN - SCOPUS:85144016767
T3 - 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
BT - 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
Y2 - 9 October 2022 through 13 October 2022
ER -
