Open AccessModelling, simulation and experimental investigation of a new two input, series‐parallel switched capacitor converter
Author(s) -
Abraham Chikku,
Jose Babita Roslind,
Mathew Jimson,
Evzelman Michael
Publication year - 2017
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2015.1000
Subject(s) - capacitor , waveform , switched capacitor , voltage , equivalent series resistance , topology (electrical circuits) , series (stratigraphy) , electronic engineering , reservoir capacitor , buck converter , control theory (sociology) , computer science , electrical engineering , engineering , decoupling capacitor , paleontology , control (management) , artificial intelligence , biology
A new series‐parallel switched capacitor converter topology capable of operating off two independent input sources and generating target output voltage in buck or boost mode is presented. Operation principle, conversion ratios, modelling considerations in different operation modes and extensive loss analysis are derived. The converter is robust and may be operated off one or two input sources, having the ability to change conversion ratio over a wide range. The proposed model assumes that the conduction losses are proportional to the average current flowing through each of the charge pump capacitor in a switching phase. Capacitor current instantaneous waveform in the complete charge, partial charge and no charge modes are captured in simulation and experiment. Model predicted equivalent resistance, output voltage and instantaneous capacitor current waveform concur excellent with simulated and experimental values, rendering the new converter as an excellent candidate for two and single input source applications.