Title :
Design and analysis of 4th-order buck DC-DC converter
Author :
Veerachary, Mummadi ; Choudhary, Amar Singh
Author_Institution :
Dept. of Electr. Eng., IIT Delhi, New Delhi, India
Abstract :
In this paper, a new fourth-order buck converter is proposed. This converter gives identical bucking feature as that of conventional buck converter with reduced ripple current on either sides of the converter. Through steady-state analysis converter performance and then converter elements design expressions are obtained. The proposed converter performance is compared with conventional buck converter from ripple current point of view. State-space analysis established and then discrete-time models are obtained. Using these discrete-time transfer functions digital controller is designed, and then regulation features are studied through simulations. Experimentation is performed on ISO watt, 48 to 28 V prototype for validating proposed converter performance.
Keywords :
DC-DC power convertors; digital control; discrete time systems; state-space methods; 4th-order buck DC-DC converter; bucking feature; converter elements design expressions; converter performance; digital controller; discrete-time models; discrete-time transfer functions; fourth-order buck converter; reduced ripple current; state-space analysis; steady-state analysis; Batteries; Equivalent circuits; Load modeling; Steady-state; Topology; Transfer functions; Voltage control; 4th order Buck converter; Digital control State-space model; Discrete-time analysis;
Conference_Titel :
Industrial and Information Systems (ICIIS), 2014 9th International Conference on
Conference_Location :
Gwalior
Print_ISBN :
978-1-4799-6499-4
DOI :
10.1109/ICIINFS.2014.7036631
