TY - GEN
T1 - Inductor feedback ZVT based, low THD single phase full bridge inverter with hybrid modulation technique
AU - Xia, Yinglai
AU - Ayyanar, Raja
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/5/17
Y1 - 2017/5/17
N2 - This paper proposes a topology based on zero-voltage-transition (ZVT) technique to realize zero-voltage-switching (ZVS) for all the main switches of the full bridge inverter, and inherent zero-current-switching (ZCS) for the auxiliary switches. The advantages of the strategy include the provision to implement zero state modulation schemes such as unipolar or hybrid PWM scheme in the full bridge inverters to decrease the inductor current THD, naturally adaptive auxiliary inductor current and elimination of need for large balancing capacitors. The modulation scheme and the commutation stages are analyzed in detail. The whole inverter including the auxiliary ZVT branch is modelled. Finally a 1 kW, 400 kHz switching frequency inverter of the proposed topology using SiC MOSFETs has been built to validate the theoretical analysis. The ZVT with hybrid modulation technique is implemented in DSP TMS320F28335 resulting in full ZVS for the main switches in the full bridge inverter. The proposed scheme can save up to 32 % of the switching loss compared with no ZVT case.
AB - This paper proposes a topology based on zero-voltage-transition (ZVT) technique to realize zero-voltage-switching (ZVS) for all the main switches of the full bridge inverter, and inherent zero-current-switching (ZCS) for the auxiliary switches. The advantages of the strategy include the provision to implement zero state modulation schemes such as unipolar or hybrid PWM scheme in the full bridge inverters to decrease the inductor current THD, naturally adaptive auxiliary inductor current and elimination of need for large balancing capacitors. The modulation scheme and the commutation stages are analyzed in detail. The whole inverter including the auxiliary ZVT branch is modelled. Finally a 1 kW, 400 kHz switching frequency inverter of the proposed topology using SiC MOSFETs has been built to validate the theoretical analysis. The ZVT with hybrid modulation technique is implemented in DSP TMS320F28335 resulting in full ZVS for the main switches in the full bridge inverter. The proposed scheme can save up to 32 % of the switching loss compared with no ZVT case.
KW - Full bridge inverters
KW - Hybrid modulation
KW - Switching loss saving
KW - ZVT
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U2 - 10.1109/APEC.2017.7931191
DO - 10.1109/APEC.2017.7931191
M3 - Conference contribution
AN - SCOPUS:85020056577
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 3444
EP - 3450
BT - 2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Y2 - 26 March 2017 through 30 March 2017
ER -