Continuous state-space modeling of switched electric networks

An automated state model generator (ASMG) is a tool for modeling and analysis of lumped-parameter power-electronic-based systems. In this modeling approach, the minimal state-space representation of the overall system is generated automatically and updated dynamically based upon the topological stat...

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Bibliographic Details
Main Authors: Jatskevich, J., Wasynczuk, O., Walters, E.A., Lucas, C.E.
Format: Conference Proceeding
Language:English
Subjects:
Circuit simulation
Circuit topology
Computational modeling
Equivalent circuits
Power system modeling
Power system simulation
Pulsed power supplies
State-space methods
Switched circuits
Switched systems
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Description
Summary:An automated state model generator (ASMG) is a tool for modeling and analysis of lumped-parameter power-electronic-based systems. In this modeling approach, the minimal state-space representation of the overall system is generated automatically and updated dynamically based upon the topological state of the system. However, due to the changing topology, simulation of a switched circuit using the ASMG requires the concatenation of solutions to the initial value problems (IVPs) corresponding to the time intervals between commutations. In this paper, a transformation of state variables is derived such that the states are continuous throughout the simulation process. This feature eliminates the need to re-initialize the ODE solver. The continuous state algorithm is verified on a high-pulse-count power supply and sets the stage for state-space averaging and system-level analysis of switched circuits.
DOI:10.1109/CCA.2000.897559