TY - GEN
T1 - A 500 kHz, 3.3 kW boost PFC with low loss coupled auxiliary ZVT circuit
AU - Kulasekaran, Siddharth
AU - Korada, Nikhil
AU - Ayyanar, Raja
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/5/17
Y1 - 2017/5/17
N2 - The paper presents a low-loss auxiliary circuit in a power factor correction (PFC) circuit to achieve zero voltage transition and hence improving the efficiency and operating frequency. The high dynamic energy generated in the switching node during turn-on is diverted by providing a parallel path through a coupled auxiliary inductor and a transistor placed across the main inductor. The auxiliary devices operate with soft-switching at both turn-on and turn-off instances and this addition has no effect on the control of the main PFC circuit. Using a coupled inductor reduces the losses in the auxiliary circuit in addition to the inherent loss savings in the main PFC switch. The paper discusses the theoretical analysis, operating principles and design of the proposed scheme in detail and validated with an hardware showing experimental results on a 3.3 kW/ 500 kHz PFC prototype.
AB - The paper presents a low-loss auxiliary circuit in a power factor correction (PFC) circuit to achieve zero voltage transition and hence improving the efficiency and operating frequency. The high dynamic energy generated in the switching node during turn-on is diverted by providing a parallel path through a coupled auxiliary inductor and a transistor placed across the main inductor. The auxiliary devices operate with soft-switching at both turn-on and turn-off instances and this addition has no effect on the control of the main PFC circuit. Using a coupled inductor reduces the losses in the auxiliary circuit in addition to the inherent loss savings in the main PFC switch. The paper discusses the theoretical analysis, operating principles and design of the proposed scheme in detail and validated with an hardware showing experimental results on a 3.3 kW/ 500 kHz PFC prototype.
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U2 - 10.1109/APEC.2017.7931003
DO - 10.1109/APEC.2017.7931003
M3 - Conference contribution
AN - SCOPUS:85019986734
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 2193
EP - 2198
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 -