TY - GEN
T1 - Forward-flyback resonant converter for high-efficient medium-power photovoltaic applications
AU - Montes, Oscar Andres
AU - Son, Sungho
AU - Kim, Sooa
AU - Seok, Hwasoo
AU - Lee, Jin S.
AU - Kim, Minsung
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/5/17
Y1 - 2017/5/17
N2 - In this paper, a quasi-resonant forward-flyback converter is proposed for photovoltaic power system. Since the output of forward-flyback converter is connected in series, the proposed circuit offers high-step up conversion. The quasi-resonant forward circuit that consists of a transformer leakage inductance and a resonant capacitor generates almost sinusoidal currents during the switch on-time so the primary switching stress has been significantly reduced. The flyback circuit transfers the energy stored in the magnetizing inductance to the load during the switch off-time. Design guidelines of the circuit parameters are presented. To verify the proposed circuit design, a 400-W experimental prototype has been designed, fabricated, and tested. Simulation and experimental results verify the effectiveness of the proposed circuit design.
AB - In this paper, a quasi-resonant forward-flyback converter is proposed for photovoltaic power system. Since the output of forward-flyback converter is connected in series, the proposed circuit offers high-step up conversion. The quasi-resonant forward circuit that consists of a transformer leakage inductance and a resonant capacitor generates almost sinusoidal currents during the switch on-time so the primary switching stress has been significantly reduced. The flyback circuit transfers the energy stored in the magnetizing inductance to the load during the switch off-time. Design guidelines of the circuit parameters are presented. To verify the proposed circuit design, a 400-W experimental prototype has been designed, fabricated, and tested. Simulation and experimental results verify the effectiveness of the proposed circuit design.
KW - Forward-flyback
KW - High-efficiency
KW - Medium power capacity
KW - Photovoltaic power applications
KW - Resonant
KW - Zero current switching
UR - http://www.scopus.com/inward/record.url?scp=85019974421&partnerID=8YFLogxK
U2 - 10.1109/APEC.2017.7930851
DO - 10.1109/APEC.2017.7930851
M3 - Conference contribution
AN - SCOPUS:85019974421
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1223
EP - 1228
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 -