TY - GEN
T1 - High Frequency Multicell Cascaded Quasi-Square-Wave Boost Converter
AU - Yuan, Jing
AU - Chen, Yenan
AU - Yang, Yongheng
AU - Blaabjerg, Frede
AU - Chen, Minjie
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/11/9
Y1 - 2020/11/9
N2 - This paper presents a multicell cascaded quasi-square-wave (MCQSW) boost converter for non-isolated DC-DC applications with high voltage conversion ratios. The MCQSW boost converter is designedto operate at high frequencies and can achieve zero voltage switching (ZVS), soft charging, currentsharing, and automatic voltage balancing. In the MCQSW converter, many boost cells are connected inparallel in series to distribute the high input current; multiple output capacitors are stacked in series to achieve high output voltage. The multicell parallel-input series-output configuration cansignificantly extend the voltage conversion ratios of the traditional QSW boost converters while maintaining low power conversion stress and enable low input current ripple due to interleaving. The high-frequency ZVS operation is enabled by an analogy control circuitry which can operate up to a few MHz. A 700 kHz to 5 MHz, 15 V-180 V (1:12 conversion ratio), 250 W MCQSW converter was built to validate the effectiveness of the MCQSW converter achieving a peak efficiency of 91%.
AB - This paper presents a multicell cascaded quasi-square-wave (MCQSW) boost converter for non-isolated DC-DC applications with high voltage conversion ratios. The MCQSW boost converter is designedto operate at high frequencies and can achieve zero voltage switching (ZVS), soft charging, currentsharing, and automatic voltage balancing. In the MCQSW converter, many boost cells are connected inparallel in series to distribute the high input current; multiple output capacitors are stacked in series to achieve high output voltage. The multicell parallel-input series-output configuration cansignificantly extend the voltage conversion ratios of the traditional QSW boost converters while maintaining low power conversion stress and enable low input current ripple due to interleaving. The high-frequency ZVS operation is enabled by an analogy control circuitry which can operate up to a few MHz. A 700 kHz to 5 MHz, 15 V-180 V (1:12 conversion ratio), 250 W MCQSW converter was built to validate the effectiveness of the MCQSW converter achieving a peak efficiency of 91%.
KW - DC-DC power conversion
KW - boost converter
KW - high frequency
KW - interleaved structure
KW - quasi-square-wave converter
KW - soft-charging
KW - soft-switching
KW - switched-capacitor circuit
UR - http://www.scopus.com/inward/record.url?scp=85098561188&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85098561188&partnerID=8YFLogxK
U2 - 10.1109/COMPEL49091.2020.9265645
DO - 10.1109/COMPEL49091.2020.9265645
M3 - Conference contribution
AN - SCOPUS:85098561188
T3 - 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020
BT - 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020
Y2 - 9 November 2020 through 12 November 2020
ER -