• M PARTHASARATHI
• Dr. K. JITHENDRA GOWD

This paper presents the analysis, control, and design of grid-connected DFIG based WECS for power smoothening with maximum power point tracking scheme. In this rotor position is estimated through the sensorless control using rotor position computation algorithm. Unpredictable nature of the wind causes power fluctuations that can be controlled by introducing battery energy storage system in the DC-link between the back to back connected voltage source converters. In this system, BESS is presented to supply regulated power to the grid irrespective of wind speed. The control algorithm of grid side converter is modified for feeding regulated power to the grid. Rotor side converter is controlled for achieving MPPT and unity power factor at the stator terminal. This developed DFIG is tested for different wind speeds and steady-state and dynamic performance test results are presented for both the PI controller and fuzzy controller.

Doubly Fed Induction Generator (DFIG), Battery Energy Storage System (BESS), Wind Energy Conversion System (WECS), Maximum Power Point Tracking (MPPT), Sensor less, Power Leveling.

"Power Smoothening of Grid Interfaced DFIG Based Variable Speed Wind Energy Conversion System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 9, page no.439-449, September-2017, Available :http://www.jetir.org/papers/JETIR1709069.pdf

"Power Smoothening of Grid Interfaced DFIG Based Variable Speed Wind Energy Conversion System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 9, page no. pp439-449, September-2017, Available at : http://www.jetir.org/papers/JETIR1709069.pdf