TY - GEN
T1 - Analysis and design of a 1-kW 3X interleaved switched-capacitor DC-DC converter
AU - Li, Shouxiang
AU - Wu, Bin
AU - Smedley, Keyue
AU - Singer, Sigmond
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/11/11
Y1 - 2014/11/11
N2 - Switched-Capacitor (SC) technologies have been an active research topic for DC-DC power conversion for many years. Without participation of inductor, they have the potential to achieve small size, light weight and high-power density. From literature research, most of the SC converters reported were implemented in low power level in the range of 5 to 50 watts. Typically they have discontinuous input current and use a large number of active switches. Recently, a new two-switch boost switched-capacitor (TBSC) converter was reported in [1] that achieves automatic interleaved DC-DC conversion with only two active switches. The TBSC converter can step up the input voltage by N times, where N=2,3,4,⋯, with continuous input current and small output voltage ripple. This paper explores the feasibility of engaging this TBSC converter for high power applications in the kilowatts level with 3X gain. A simplified modeling method and analysis method is presented to provide solid guidance for analysis and design of the TBSC converter. A 1-kW 150/450-V prototype was implemented that achieved a peak efficiency of 97.5% at full load.
AB - Switched-Capacitor (SC) technologies have been an active research topic for DC-DC power conversion for many years. Without participation of inductor, they have the potential to achieve small size, light weight and high-power density. From literature research, most of the SC converters reported were implemented in low power level in the range of 5 to 50 watts. Typically they have discontinuous input current and use a large number of active switches. Recently, a new two-switch boost switched-capacitor (TBSC) converter was reported in [1] that achieves automatic interleaved DC-DC conversion with only two active switches. The TBSC converter can step up the input voltage by N times, where N=2,3,4,⋯, with continuous input current and small output voltage ripple. This paper explores the feasibility of engaging this TBSC converter for high power applications in the kilowatts level with 3X gain. A simplified modeling method and analysis method is presented to provide solid guidance for analysis and design of the TBSC converter. A 1-kW 150/450-V prototype was implemented that achieved a peak efficiency of 97.5% at full load.
UR - http://www.scopus.com/inward/record.url?scp=84934297139&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2014.6953622
DO - 10.1109/ECCE.2014.6953622
M3 - Conference contribution
AN - SCOPUS:84934297139
T3 - 2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014
SP - 1692
EP - 1698
BT - 2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014
PB - Institute of Electrical and Electronics Engineers Inc.
ER -