Title :
Stability Analysis of Cascaded DC-DC Power Electronic System
Author :
Veerachary, M. ; Sudhakar, S. Bala
Author_Institution :
Indian Inst. of Technol. Delhi, Delhi
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;
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
DOI :
10.1109/PEDS.2007.4487890
