A Review of Direct Power Control Technologies of DFIG based Wind energy conversion system
Ravi Shengar1, Mrs. Vinita Swarnkar2
1M.Tech Student, Dept. of Electrical and Electronics Engineering, SSGI Durg, Chhattisgarh, India
2Assistant Professor, Dept. of Electrical and Electronics Engineering, SSGI Durg, Chhattisgarh, India
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Abstract - Wind energy conversion system is becoming very popular now a days and the application of wound rotor induction machine is widely spread in wind energy generating stations because of its adaptability for variable speed wind turbines through which maximum possible extraction of wind energy is possible. DFIG's Constant Switching Frequency Direct Power Control (DPC) technologies have become a focal point due to their simple AC power converter and harmonic filter design, as well as reducing stator current harmonics and reducing power loss. This article provides a complete description of this technology. Direct power control with constant switching frequency has been shown to be achieved primarily with PWM, SVM, DSVM-DPC, and P-DPC, respectively. The principle of the scheme and the advantages or disadvantages of each approach are presented. Difficulties in the application of technology are also analyzed.
Key Words: Direct power control; constant switching frequency; DFIG.
