TY - GEN
T1 - Algebraic foundation of self adjusting switched capacitors converters
AU - Ben-Yaakov, Sam
AU - Kushnerov, Alexander
PY - 2009/12/28
Y1 - 2009/12/28
N2 - An algebraic model that describes the operation of binary Switched-Capacitor Converters (SCC) was developed and generalized to any radix case. The proposed approach reduces the power loss by increasing the number of target voltages. In the binary case, the flying capacitors are automatically kept charged to binary weighted voltages and consequently, the resolution of the possible target voltages is binary. The paper presents the underlining theory of the proposed SCC and two new control methods to regulate the output voltage. It is shown that the theoretical formulation of the new number systems can describe many SCC circuits on the market and can help design new SCC with a larger number of target voltages. The theoretical results were verified for the binary case by simulation and experimentally. Excellent agreement was found between the theory and experimental results. The down side of the proposed SCC schemes is the relatively large number of switches which makes the approach more suitable for low power applications.
AB - An algebraic model that describes the operation of binary Switched-Capacitor Converters (SCC) was developed and generalized to any radix case. The proposed approach reduces the power loss by increasing the number of target voltages. In the binary case, the flying capacitors are automatically kept charged to binary weighted voltages and consequently, the resolution of the possible target voltages is binary. The paper presents the underlining theory of the proposed SCC and two new control methods to regulate the output voltage. It is shown that the theoretical formulation of the new number systems can describe many SCC circuits on the market and can help design new SCC with a larger number of target voltages. The theoretical results were verified for the binary case by simulation and experimentally. Excellent agreement was found between the theory and experimental results. The down side of the proposed SCC schemes is the relatively large number of switches which makes the approach more suitable for low power applications.
KW - Binary arithmetic
KW - Binary sequences
KW - DC-DC power conversion
KW - Redundant number systems
KW - Resolution
KW - Switched capacitor
KW - Switched mode power supplies
UR - http://www.scopus.com/inward/record.url?scp=72449209129&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2009.5316143
DO - 10.1109/ECCE.2009.5316143
M3 - Conference contribution
AN - SCOPUS:72449209129
SN - 9781424428939
T3 - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
SP - 1582
EP - 1589
BT - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
T2 - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
Y2 - 20 September 2009 through 24 September 2009
ER -