Title :
Continuous state-space modeling of switched electric networks
Author :
Jatskevich, J. ; Wasynczuk, O. ; Walters, E.A. ; Lucas, C.E.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
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
Keywords :
AC-DC power convertors; initial value problems; lumped parameter networks; network analysis; power electronics; state-space methods; switched networks; 24 pulse AC/DC power converter; ODE solver re-initialisation; automated state model generator; commutation; continuous state algorithm; continuous state-space modeling; high-pulse-count power supply; initial value problems; lumped-parameter power-electronic-based systems; minimal state-space representation; simulation process; state variables transformation; state-space averaging; switched circuit simulations; switched electric networks; system-level analysis; Circuit simulation; Circuit topology; Computational modeling; Equivalent circuits; Power system modeling; Power system simulation; Pulsed power supplies; State-space methods; Switched circuits; Switched systems;
Conference_Titel :
Control Applications, 2000. Proceedings of the 2000 IEEE International Conference on
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-6562-3
DOI :
10.1109/CCA.2000.897559
