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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
G. Venu Madhav
Padmasri Dr. B. V. Raju Institute of Technology
Control & Systems Engineering Electrical & Electronics Engineering

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A Fuzzy Logic Control Strategy for Doubly Fed Induction Generator for Improved Performance under Faulty Operating Conditions G. Venu Madhav; Y. P. Obulesu
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 4, No 4: December 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

In this paper, decouple PI control for output active and reactive powers which is the common control technique for power converter of Doubly Fed Induction Generator (DFIG) is presented. But there are some disadvantages with this control method like uncertainty about the exact model, behavior of some parameters or unpredictable wind speed and tuning of PI parameters. To overcome the mentioned disadvantages a fuzzy logic control of DFIG wind turbine is presented and is compared with PI controller. To validate the proposed scheme, simulation results are presented, these results showed that the performance of fuzzy control of DFIG is excellent and it improves power quality and stability of wind turbine compared to PI controller. The Fuzzy logic controller is applied to rotor side converter for active power control and voltage regulation of wind turbine. The entire work is carried out in MATLab/Simulink. Different faulty operating conditions are considered to prove the effective implementation of the proposed control scheme.DOI: http://dx.doi.org/10.11591/ijpeds.v4i4.5966
Low Voltage Ride-Through of Doubly Fed Induction Machine using Direct Torque Control Strategy G. Venu Madhav; Y. P. Obulesu
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 3, No 1: March 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

The wind turbines based Doubly Fed Induction Machine (DFIM) not able to support the voltage and the frequency of the grid during and immediately following the grid failure. This would cause major problems for the systems stability, but the turbines should stay connected to the grid in case of a failure. This can be achieved by using crowbar protection in particularly during voltage dips. When low depth voltage dips occur, the necessity of crowbar proctection can be eliminated by using proposed Direct Torque Control (DTC), with a proper rotor flux generation strategy, by which during the fault it will be possible to maintain the machine connected to grid, generating power from the wind, reducing the stator and rotor over currents, eliminating the torque oscillations that normally produce such voltage dips and fast dynamic response accompanies the overall control of the wind turbine.DOI: http://dx.doi.org/10.11591/ijpeds.v3i1.1733
Co-Authors Y. P. Obulesu