TY - GEN
T1 - A High-Efficiency Single-Stage DAB Microinverter with New Switching Modulation and Integrated Transformer
AU - Kim, Sunju
AU - Kang, Kunwoo
AU - Geda, Million Gerado
AU - Kieu, Huu Phuc
AU - Choi, Sewan
AU - Lee, Suchang
AU - Yun, Juhwan
AU - Park, Jungpil
N1 - Publisher Copyright:
© 2023 The Korean Institute of Power Electronics.
PY - 2023
Y1 - 2023
N2 - This paper proposes a high-efficiency modulation scheme and magnetic integration for single-stage microinverter module-level power electronics. The proposed 400W microinverter achieves full zero voltage switching for dc input voltages ranging from 18V to 58V, using a half bridge matrix-based DAB structure. The proposed switching modulation method is easy to control and enables high power density due to the use of a constant switching frequency. In addition, the integration of transformer and series inductor reduced the volume of the converter by 18%, and power loss by 50% of separated cores. To validate the proposed method, a 400W micro-inverter prototype was built and achieved a peak efficiency of 97.33% and a CEC efficiency of 96.58%.
AB - This paper proposes a high-efficiency modulation scheme and magnetic integration for single-stage microinverter module-level power electronics. The proposed 400W microinverter achieves full zero voltage switching for dc input voltages ranging from 18V to 58V, using a half bridge matrix-based DAB structure. The proposed switching modulation method is easy to control and enables high power density due to the use of a constant switching frequency. In addition, the integration of transformer and series inductor reduced the volume of the converter by 18%, and power loss by 50% of separated cores. To validate the proposed method, a 400W micro-inverter prototype was built and achieved a peak efficiency of 97.33% and a CEC efficiency of 96.58%.
KW - Matrix-based DAB structure
KW - Single-stage
KW - constant switching frequency
KW - high efficiency
KW - magnetic integration
KW - modulation scheme
UR - http://www.scopus.com/inward/record.url?scp=85170641674&partnerID=8YFLogxK
U2 - 10.23919/ICPE2023-ECCEAsia54778.2023.10213715
DO - 10.23919/ICPE2023-ECCEAsia54778.2023.10213715
M3 - Conference contribution
AN - SCOPUS:85170641674
T3 - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics
SP - 2498
EP - 2503
BT - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th International Conference on Power Electronics - ECCE Asia, ICPE 2023-ECCE Asia
Y2 - 22 May 2023 through 25 May 2023
ER -