TY - GEN
T1 - Extra Switching Losses Caused by Parasitic Capacitance in Medium-Voltage Filter Inductors with Grounded Cores
AU - Zhao, Hongbo
AU - Liu, Gao
AU - Nielsen, Morten Rahr
AU - Kjær, Martin
AU - Kjærsgaard, Benjamin Futtrup
AU - Wang, Rui
AU - Yan, Zhixing
AU - Dalal, Dipen Narendra
AU - Rannestad, Bjørn
AU - Munk-Nielsen, Stig
PY - 2023/3/19
Y1 - 2023/3/19
N2 - Previous research reports that the parasitic capacitance of filter inductors can result in larger capacitive currents and cause increased losses in transistors. However, previous research only discussed inductors with floating cores and frames, where the high-power and medium to high-voltage inductors are practically required to have grounded frames and cores according to the standards. To fill the gap, this paper aims to provide a comprehensive analysis of the extra switching losses caused by the parasitic capacitance of inductors with grounded cores and frames. Using the 10 kV SiC MOSFETs with an accurate digital model of the double-pulse-test (DPT) setup in L TSpice, the results imply that grounding the core and frame of inductors will cause increased transient drain current and switching losses, which are further verified in an experimental DPT results. In addition, possible solutions are proposed to reduce the extra switching losses.
AB - Previous research reports that the parasitic capacitance of filter inductors can result in larger capacitive currents and cause increased losses in transistors. However, previous research only discussed inductors with floating cores and frames, where the high-power and medium to high-voltage inductors are practically required to have grounded frames and cores according to the standards. To fill the gap, this paper aims to provide a comprehensive analysis of the extra switching losses caused by the parasitic capacitance of inductors with grounded cores and frames. Using the 10 kV SiC MOSFETs with an accurate digital model of the double-pulse-test (DPT) setup in L TSpice, the results imply that grounding the core and frame of inductors will cause increased transient drain current and switching losses, which are further verified in an experimental DPT results. In addition, possible solutions are proposed to reduce the extra switching losses.
KW - extra switching losses
KW - filter inductors
KW - floating core and frames
KW - grounded core and frames
KW - parasitic capacitance
UR - http://www.scopus.com/inward/record.url?scp=85162196959&partnerID=8YFLogxK
U2 - 10.1109/APEC43580.2023.10131429
DO - 10.1109/APEC43580.2023.10131429
M3 - Article in proceeding
T3 - I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings
SP - 413
EP - 419
BT - APEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition
PB - IEEE (Institute of Electrical and Electronics Engineers)
T2 - 38th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023
Y2 - 19 March 2023 through 23 March 2023
ER -