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Most of the reported control algorithms for uninterruptible power supplies use either inductor currents or capacitor currents of their filter as feedback variables to regulate the output voltage. This paper proposes a simple non linear control using current and voltage of a DC/AC inverter of an isolated three phase power network. Theoretical analysis and simulation results demonstrate fast response,...
In this paper, the Lyapunov function is used for nonlinear stability analysis of microwave oscillators. Using this method, both the instability of DC bias point and the stability of steady state oscillation can be analyzed. The successes of Lyapunov method, in nonlinear control theory, support the idea of using this method for stability analysis of microwave oscillators. In this paper the application...
Modal series is a new approach for modeling and analysis of nonlinear systems. This paper provides application of modal series to state estimation of nonlinear systems and introduces a new state estimation approach for nonlinear systems which uses a modal series model of nonlinear systems for Kalman filtering. The method implies a sequential use of Kalman filters which each one tries to decrease estimation...
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