A NOVEL DESIGN AND IMPLEMENTATION OF THREE-PHASE RECTIFIER-INVERTER FOR DFIG IN WIND POWER APPLICATIONS

Abstract- The three-phase grid connected converter is most widely used in renewable and wind power applications. A study of the literature shows that there are some limitations in the conventional standard vector control method. The other researchers have found out some of these limitations. It is found in many research papers that still there exist a limitation in the conventional vector control technique. This paper proposes a new enhanced fuzzy control method for rectifier –inverter model. The merits of both the conventional and the proposed control methods are compared and evaluated in a laboratory hardware experiment environments. The results shows that fuzzy control approach is effective for grid connected power converter control in a wide range of system conditions.

Keywords:

Power converter; fuzzy logic; rectifier –inverter; Direct current vector control,

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Mrs. P. Suganya received
B.E., M.Tech., and pursuing
Ph.D. Her areas of interest
are power electronics, Fuzzy
and Control Systems. She
is continuing the teaching
services since sixteen years.
She published journal papers
under her specialization.
Dr. N. Rengarajan received
B.Sc., B.Tech., M.E.,Ph.D.
His areas of specialization
are Power System Control,
Power Electronics, ANN,
Fuzzy and Control Systems.
He is continuing the teaching
services for more than two
decade. He also holds industrial experiences for 5
years as in Tata Consultant System. He published
several journal papers under his Specialization.