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Large-Signal Stability Analysis in Power Systems with a Synchronous Generator Connected to a Large Motor Drive

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4 Author(s)
Sebastian Rosado ; Center for Power Electronics Systems, The Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA ; Rolando Burgos ; Fred Wang ; Dushan Boroyevich

This paper studies the large-signal stability of a synchronous generator connected to a motor drive of a similar power. The generator-motor drive set, with additional auxiliary lower power loads represents a simplified version of an all electric ship power system. The use of Lyapunov linearization method allows identifying the region of stable operation. This description is valid only locally. However, the boundaries of this region where the equilibrium points change their stability condition represent bifurcations of the nonlinear system. In addition, nonlinear behavior is likely to appear close to those boundaries. The paper also describes observed nonlinear behavior created by the action of hard limits in the system.

Published in:

2007 IEEE Electric Ship Technologies Symposium

Date of Conference:

21-23 May 2007