Melicio, R.Mendes, VictorCatalão, João Paulo da Silva2011-11-282011-11-282010Melicio R, Mendes V M F, Catalão J P S.A Pitch Control Malfunction Analysis for Wind Turbines with Permanent Magnet Synchronous Generator and Full-power Converters: Proportional Integral Versus Fractional-order Controllers. Electric Power Components and Systems. 2010; 38 (4): 387-406.1532-5008http://hdl.handle.net/10400.21/707A transient analysis for two full-power converter wind turbines equipped with a permanent magnet synchronous generator is studied in this article, taking into consideration, as a new contribution to earlier studies, a pitch control malfunction. The two full-power converters considered are, respectively, a two-level and a multi-level converter. Moreover, a novel control strategy based on fractional-order controllers for wind turbines is studied. Simulation results are presented; conclusions are in favor of the novel control strategy, improving the quality of the energy injected into the electric grid.engFractional-order controllerPitch control malfunctionPower convertersPower qualityWind turbinesA Pitch Control Malfunction Analysis for Wind Turbines with Permanent Magnet Synchronous Generator and Full-power Converters: Proportional Integral Versus Fractional-order Controllersjournal article