Grid Interfaced DFIG Based Variable SpeedWind Energy Conversion System with PowerSmoothening - 2016

PROJECT TITLE :

Grid Interfaced DFIG Based Variable SpeedWind Energy Conversion System with PowerSmoothening - 2016

ABSTRACT:

This paper deals with the analysis, design, and control of grid-interfaced doubly fed induction generator (DFIG) primarily based variable speed wind energy conversion system (WECS) for power smoothening with maximum power purpose tracking (MPPT) capability. This DFIG uses rotor position computation algorithm for the sensorless management through rotor position estimation. Power fluctuations thanks to the unpredictable nature of the wind are eliminated by introducing battery energy storage system (BESS) in the dc link between two back-to-back connected voltage source converters. The style of BESS is presented for feeding regulated power to the grid regardless of the wind speeds. The control algorithm of the grid-facet converter is changed for feeding regulated power to the grid. Rotor-side converter is controlled for achieving MPPT and unity power issue operation at the stator terminals. A prototype of the proposed DFIG-based wind energy conversion system is developed employing a digital signal processor (DSP-dSPACE DS1103). This developed DFIG is tested extensively at totally different wind speeds and also presented a number of the steady-state check results. Dynamic performance of this DFIG is additionally demonstrated for the variable wind speed operation.

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