Browsing by Author "Priyanka, A.G."
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Item Rotor speed instability analysis of type-1 wind turbine generator(2014) Priyanka, A.G.; Shubhanga, K.N.In this paper, type-1 wind turbine generator (WTG) connected to the grid system is analyzed. The phenomenon of rotor speed instability is brought out clearly and it is explained with the help of torque-speed characteristic. It is also shown that if the WTG is made to deliver a load power below a certain value, then the system remains always stable. In addition, case studies are presented to demonstrate the rotor speed instability accounting the two-mass shaft model for the drive train system. � 2014 IEEE.Item Rotor speed instability analysis of type-1 wind turbine generator(Institute of Electrical and Electronics Engineers Inc., 2014) Priyanka, A.G.; Shubhanga, K.N.In this paper, type-1 wind turbine generator (WTG) connected to the grid system is analyzed. The phenomenon of rotor speed instability is brought out clearly and it is explained with the help of torque-speed characteristic. It is also shown that if the WTG is made to deliver a load power below a certain value, then the system remains always stable. In addition, case studies are presented to demonstrate the rotor speed instability accounting the two-mass shaft model for the drive train system. © 2014 IEEE.Item Rotor stability performances of a grid connected type-1 wind turbine generator(2015) Priyanka, A.G.; Shubhanga, K.N.In this paper, rotor stability performance details of a grid connected type-1 wind turbine generator (WTG) system are presented. Small-signal and transient stability analyses are carried out including the models of the turbine-generator shaft system to show that the torsional modes natural to the shaft system gets excited only when the system exhibits rotor speed instability. This observation will be very useful when analyzing the subsynchronous resonance performance of wind turbine systems connected to a series capacitor compensated transmission system. Further, it is demonstrated that an active stall control offers a way to improve large disturbance stability of the system. � 2015 IEEE.Item Rotor stability performances of a grid connected type-1 wind turbine generator(Institute of Electrical and Electronics Engineers Inc., 2015) Priyanka, A.G.; Shubhanga, K.N.In this paper, rotor stability performance details of a grid connected type-1 wind turbine generator (WTG) system are presented. Small-signal and transient stability analyses are carried out including the models of the turbine-generator shaft system to show that the torsional modes natural to the shaft system gets excited only when the system exhibits rotor speed instability. This observation will be very useful when analyzing the subsynchronous resonance performance of wind turbine systems connected to a series capacitor compensated transmission system. Further, it is demonstrated that an active stall control offers a way to improve large disturbance stability of the system. © 2015 IEEE.