TY - JOUR
T1 - A High Input Voltage Auxiliary Power Supply Utilizing Automatic Balanced MOSFET Stack
AU - Zhang, Fan
AU - Ren, Yu
AU - Yang, Xu
AU - Chen, Wenjie
AU - Wang, Laili
N1 - Publisher Copyright:
© 1982-2012 IEEE.
PY - 2021/11
Y1 - 2021/11
N2 - In order to deal with the challenges in establishing a high input voltage high step-down auxiliary power supply (APS) for modular converters, a flyback converter utilizing series-connected silicon carbide (SiC) MOSFETs is proposed in this article. With the aid of a novel snubber circuit structure, the used series-connected SiC MOSFETs can switch with nearly perfect dynamic voltage sharing. Besides, the snubber circuit acts as voltage clamping circuit for the flyback converter, so voltage overshoot caused by transformer leakage inductance can be effectively controlled. Furthermore, the snubber circuit helps to power the control, gate driver, and startup circuits of the APS, leading to a reduction in system complexity and improvement in efficiency. Detailed circuit analysis and design considerations of the APS are presented. Finally, hardware of a 4 kV/120 W APS is established and experimentally verified.
AB - In order to deal with the challenges in establishing a high input voltage high step-down auxiliary power supply (APS) for modular converters, a flyback converter utilizing series-connected silicon carbide (SiC) MOSFETs is proposed in this article. With the aid of a novel snubber circuit structure, the used series-connected SiC MOSFETs can switch with nearly perfect dynamic voltage sharing. Besides, the snubber circuit acts as voltage clamping circuit for the flyback converter, so voltage overshoot caused by transformer leakage inductance can be effectively controlled. Furthermore, the snubber circuit helps to power the control, gate driver, and startup circuits of the APS, leading to a reduction in system complexity and improvement in efficiency. Detailed circuit analysis and design considerations of the APS are presented. Finally, hardware of a 4 kV/120 W APS is established and experimentally verified.
KW - Auxiliary power supply (APS)
KW - series-connection
KW - silicon carbide (SiC) MOSFET
KW - snubber circuit
KW - voltage balancing
UR - https://www.scopus.com/pages/publications/85096844440
U2 - 10.1109/TIE.2020.3038097
DO - 10.1109/TIE.2020.3038097
M3 - 文章
AN - SCOPUS:85096844440
SN - 0278-0046
VL - 68
SP - 10654
EP - 10665
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 11
M1 - 9264756
ER -