Small-Signal Transfer Functions of the Classical Boost Converter Supplied by Ultracapacitor Banks
MetadataShow full item record
Ultracapacitor is an emerging device for energy storage that can replace batteries in some short-term applications. Due to the fact that the terminal voltage of an ultracapacitor varies with the level of energy stored, a power electronic converter with voltage boosting capability is usually needed at its terminals to interface with a load operating at a constant voltage. For the case of a classical boost dc-dc converter supplying a resistive load by drawing energy from a bank of ultracapacitors, the paper derives small-signal transfer functions by considering a time-varying steady-state. To reduce the complexity of resulting exact expressions of poles, highly accurate approximate expressions are also derived. Furthermore, it compares how the control characteristics change when a constant voltage source such as a battery replaces the ultracapacitor bank. A numerical example is presented to demonstrate the accuracy of the approximate values of poles and zeros and to describe how the poles and zeros vary with the duty ratio.
Copyright © 2007 IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Showing items related by title, author, creator and subject.
Juanuwattanakul, Parachai (2012)Voltage instabilities and subsequent system collapses are considered as growing concerns in modern multiphase distribution networks as they are progressively forced to operate closer to their stability limits due to many ...
A hybrid cascade converter topology with series-connected symmetrical and asymmetrical diode-clamped H-bridge cellsNami, A.; zare, F.; Ghosh, Arindam; Blaabjerg, F. (2011)A novel H-bridge multilevel pulsewidth modulation converter topology based on a series connection of a high-voltage diode-clamped inverter and a low-voltage conventional inverter is proposed in this paper. A dc link voltage ...
Abdou, A.; Abu-Siada, Ahmed; Pota, H. (2012)In doubly fed induction generator (DFIG) based wind energy conversion systems (WECS), the DFIG is interfaced to the AC network through grid side voltage source converter (GSC) and rotor side voltage source converter (RSC). ...