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In this paper, a new control strategy is proposed to improve the performance of a wind generator system composed of a three-phase PMSG and a Back-to-Back three-phase to single phase converter. With the use of the large inductance of the synchronous generator, the control method minimizes the generator torque ripple when the system supplies a single-phase load. The problem arises from the fact that...
This paper presents an online procedure for the automatic search of the maximum-torque-per-ampere operating region for a synchronous reluctance motor. The algorithm is based on a signal-injection method with a random-based perturbation pattern applied to a common direct-torque-controlled drive. Among motor parameters, only the stator resistance is required to perform the automatic procedure. Simulations...
This paper encompasses the study of modelling and design of WECS, using a wind turbine with known dynamic characteristics and a permanent magnet synchronous generator driven by a back to back power converter topology. The dynamic modeling allows to know the response of the turbine generator system in the whole range of operation. In this study, it is proposed a variable structure control scheme with...
In this paper, we propose a sliding mode - based controller for a wind power system where an induction generator is connected to an infinity bus. To ensure robustness of the closed - loop system with respect to perturbations and plant parameter variations, first, we applied the conventional sliding mode (SM) control technique. Secondly, an integral sliding SM control is designed to reduce a chattering...
Wind turbine system is a complex nonlinear system involving some random disturbances. Based on analyzing characteristics of wind turbine and requisitions of pitch control, a compound approach was investigated by combining dynamic feed forward and fuzzy-PI to control pitch angle. Fuzzy control can not depend on mathematical model, so it solves the problem of modeling wind turbine system including feed...
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