Title :
G-Parameter Based Stability Analysis of DC-DC Power Electronic System
Author :
Veerachary, M. ; Saxena, Anmol Ratna
Author_Institution :
Dept. of Electr. Eng., IEEE, New Delhi
Abstract :
Stability analysis of the DC-DC power electronic system is analyzed in this paper using a G-parameter approach. For demonstration boost converter cascaded with 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, respectively. Converter two-port G-parameter 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; circuit stability; electric current control; switching convertors; voltage control; DC-DC power electronic system; G-parameter based stability analysis; bus converter; cascaded system interaction effects; hybrid switched capacitor converter; load converter; load converter interfacing capability; peak-current-mode controller; source converter power handling capability; switching load; voltage-mode controller; Capacitors; Impedance; Power demand; Power electronics; Power supplies; Power system modeling; Power system stability; Stability analysis; Switching converters; Voltage control; Boost converter with output filter; Hybrid switched capacitor converter; Two-port network; voltage-mode control;
Conference_Titel :
Power System Technology and IEEE Power India Conference, 2008. POWERCON 2008. Joint International Conference on
Conference_Location :
New Delhi
Print_ISBN :
978-1-4244-1763-6
Electronic_ISBN :
978-1-4244-1762-9
DOI :
10.1109/ICPST.2008.4745294
