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This paper introduces a mechanical sensorless control strategy to be used in variable speed wind energy conversion systems based on permanent magnet synchronous generators. The goal of the control strategy is to track the wind turbine maximum power point. With the proposed strategy, mechanical sensors are not needed to implement the control law. For this reason, electrical sensors -voltage and current...
In this paper a mechanical sensorless control strategy for controlling a permanent magnet synchronous generator used in a variable speed wind energy conversion system is proposed. In order to track the wind turbine maximum power point (MPPT) an observer-based generator torque control scheme is designed. The control law is built by using estimates of the mechanical variables. These estimates are obtained...
This paper deals with the problem of nonlinear states estimation in batch chemical processes. It presents a reduced-order nonlinear observer approach to perform the estimation. The proposed method allows adjustment of the speed of convergence towards zero of the estimation error. The stability properties of the model-based observer are analytically treated in order to show the conditions under which...
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