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| Title | A globally continuous state-space representation of switched networks |
| Publication Type | Conference Paper |
| Year of Publication | 2000 |
| Authors | Jatskevich, J., O. Wasynczuk, E. A. Walters, and C. E. Lucas |
| Conference Name | Electrical and Computer Engineering, 2000 Canadian Conference on |
| Pagination | 559 -563 vol.1 |
| Keywords | automated method, automated state-space averaging, circuit simulation, computer-generated equations, differential equations, globally continuous state-space representation, initial value problems, minimal state-space representation, network topology, numerically efficient method, ODE solver, power electronics, power-electronic-based systems, rectifying circuits, state variable approach, state variables transformation, state-space methods, state-space models, switched circuit simulation, switched electrical networks, switched networks, switching networks, synchronous machine-rectifier system, synchronous machines, system-level analysis, time intervals, transient response, transient responses |
| Abstract | The state variable approach is a numerically efficient and analytically meaningful method of predicting and characterizing the transient responses of power-electronic-based systems. An automated method of establishing state-space models of switched electrical networks is considered. In this modeling approach, the minimal state-space representation of the overall system is generated dynamically as each topology is encountered. Due to the changing topology, the simulation of a switched circuit requires concatenation of the solutions of initial value problems (IVPs) corresponding to time intervals between switching events. In this paper, a transformation of state variables is derived such that the computer-generated equations have the same dimension and the new states are continuous throughout the study. This feature eliminates the need for re-initializing the ODE solver and sets the stage for automated state-space averaging and system-level analysis of switched circuits. The algorithm is verified using a practical example of a synchronous machine-rectifier system |
| URL | http://dx.doi.org/10.1109/CCECE.2000.849772 |
| DOI | 10.1109/CCECE.2000.849772 |