Title :
Analysis and modeling of a two-input DC/DC converter with two controlled variables and four switched networks
Author :
Rodríguez, Francis D. ; Imes, W.G.
Author_Institution :
Space Syst. Div., Lockheed Missiles & Space Co., Inc. Sunnyvale, CA, USA
Abstract :
A two-input tri-state DC/DC converter was presented by the authors (1994) capable of performing solar array peak-power tracking, battery power conditioning, and output voltage regulation all within the same converter structure. At light loads and during periods of low insolation, converter operation will naturally evolve through four linear switched networks. In this paper, the small-signal stability of the tri-state converter is analyzed and a large-signal averaged model is derived capable of predicting the dynamic behavior during and following transitions to and from this fourth state
Keywords :
DC-DC power convertors; circuit stability; solar cell arrays; solar cells; switched networks; voltage control; MIMO system stability; battery power conditioning; controlled variables; converter operation; dynamic behavior prediction; large-signal averaged model; light loads; low insolation; output voltage regulation; small-signal stability; solar array peak-power tracking; switched networks; tri-state DC/DC converter; two-input DC/DC converter; Batteries; DC-DC power converters; Power conditioning; Predictive models; Pulse width modulation; Regulators; Stability analysis; Switches; Switching converters; Voltage control;
Conference_Titel :
Energy Conversion Engineering Conference, 1996. IECEC 96., Proceedings of the 31st Intersociety
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-3547-3
DOI :
10.1109/IECEC.1996.552892
