Accelerated state-variable modeling of synchronous machine-converter systems

TitleAccelerated state-variable modeling of synchronous machine-converter systems
Publication TypeConference Paper
Year of Publication2008
AuthorsWang, L., A. Davoudi, J. Jatskevich, and P. L. Chapman
Conference NameCircuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Pagination3037 -3040
Date Publishedmay.
Keywordsaccelerated state-variable modeling, circuit topology, direct abc phase coordinates, electrical machines, network topology, power electronic circuits, power electronics, real-time simulations, rotor position-dependent inductances, synchronous machine-converter, synchronous machines, variable parameters

Power-electronic circuits and systems with rotating electrical machines are often modeled at the system level with controls using a state-variable approach, wherein the machine may be represented in direct abc phase coordinates. The minimal state-space representation of the overall system is readily generated from the circuit-branch data. However, for systems with variable parameters (rotor position-dependent inductances) re-computing the state equation to reflect the changes is computationally expensive and challenging. This paper presents a very efficient algorithm for updating the required terms based on circuit topology that makes the overall model fast and suitable for real-time simulations.


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