Stability Analysis of Cascaded DC-DC Power Electronic System

Author

Veerachary, M. ; Sudhakar, S. Bala

Author_Institution

Indian Inst. of Technol. Delhi, Delhi

fYear

2007

fDate

27-30 Nov. 2007

Firstpage

1422

Lastpage

1426

Abstract

Stability analysis of the cascaded DC-DC power electronic system is analyzed in this paper. For demonstration boost converter supplying the hybrid switched capacitor converter considered as an example. The boost converter is acting as the bus converter, 42 V bus, while the switched capacitor converter is the point of load converter. The two converters are provided with voltage- mode and peak-current-mode controllers. Converter two- port network models are developed and then stability of the cascaded system has been analyzed. Cascaded system interaction effects, (i) source converter power handling capability with switching load, and (ii) load converter interfacing capability with bus converter, are analyzed. Simulation and experimental results are provided for verification purpose.

Keywords

DC-DC power convertors; cascade networks; electric current control; stability; switched capacitor networks; switching convertors; voltage control; voltage regulators; boost converter; cascaded DC-DC power electronic system; hybrid switched capacitor converter; peak-current-mode controllers; stability analysis; voltage 42 V; voltage-mode controllers; Capacitors; Equivalent circuits; Impedance; Power demand; Power electronics; Power supplies; Power system modeling; Stability analysis; Switching converters; Transfer functions; Boost converter; Peak current-mode control; Switched capacitor converter; Two-port network model;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 2007. PEDS '07. 7th International Conference on

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0645-6

Electronic_ISBN

978-1-4244-0645-6

Type

conf

DOI

10.1109/PEDS.2007.4487890

Filename

4487890