TY - GEN
T1 - Light Load Efficiency Enhancement Strategy for Single-Stage AC-DC by Using Adaptive Switching Frequency
AU - Geda, Million Gerado
AU - Song, Huigyeong
AU - Do, Ba Phu
AU - Choi, Sewan
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This paper presents a modulation scheme that utilizes adaptive switching frequency (fsw) to enhance light load efficiency performance for a single-stage stage AC to DC converter. Single-stage converters operate with hard switching during light load operations, leading to significant switching losses and Electro Magnetic Interference (EMI). This situation is severe with low voltage gain or low battery voltage. In addition, a single-stage converter experiences low total harmonic distortion (THD) at light load operation. The proposed modulation scheme improved the light-load efficiency, and power quality of the conversion. Experiment results from a 3.7 kW single-stage OBC prototype are provided to verify the theoretical claims at various load levels. The proposed method is good for Battery Energy Storage Systems (BESS) and photovoltaic (PV) applications where various levels of load conversion may be involved.
AB - This paper presents a modulation scheme that utilizes adaptive switching frequency (fsw) to enhance light load efficiency performance for a single-stage stage AC to DC converter. Single-stage converters operate with hard switching during light load operations, leading to significant switching losses and Electro Magnetic Interference (EMI). This situation is severe with low voltage gain or low battery voltage. In addition, a single-stage converter experiences low total harmonic distortion (THD) at light load operation. The proposed modulation scheme improved the light-load efficiency, and power quality of the conversion. Experiment results from a 3.7 kW single-stage OBC prototype are provided to verify the theoretical claims at various load levels. The proposed method is good for Battery Energy Storage Systems (BESS) and photovoltaic (PV) applications where various levels of load conversion may be involved.
KW - Adaptive Switching Frequency
KW - and Single-Stage AC-DC Converter
KW - Light Load Efficiency
UR - http://www.scopus.com/inward/record.url?scp=85199019887&partnerID=8YFLogxK
U2 - 10.1109/IPEMC-ECCEAsia60879.2024.10567907
DO - 10.1109/IPEMC-ECCEAsia60879.2024.10567907
M3 - Conference contribution
AN - SCOPUS:85199019887
T3 - 2024 IEEE 10th International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
SP - 2051
EP - 2055
BT - 2024 IEEE 10th International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th IEEE International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
Y2 - 17 May 2024 through 20 May 2024
ER -
