The fluctuation of active power output of wind farm has many negative impacts on large-scale wind power integration into power grid. In this paper, flywheel energy storage system (FESS) was connected to AC side of the doubly-fed induction generator (DFIG) wind farm to realize smooth control of wind power output. Based on improved wind power prediction algorithm and wind speed-power curve modeli...

Abstract In pumping airborne wind energy (AWE) systems, the kite is operated in repetitive crosswind patterns, pulling tether from a winch that drives generator on ground. During reel-out phase of its operation, it produces power, whereas, during reel-in phase, consumes small fraction produced power. This leads to an oscillating power profile requires smoothing before can be supplied electricit...

v ACKNOWLEDGEMENTS I would like to thank my advisor, Dr. Philipos C. Loizou, for his guidance in my studies and my work. He has offered me many helpful suggestions on conducting research and writing technical documents. defense committee and for their valuable feedback on this manuscript. I also thank Arunvijay Mani for helping me format the thesis. And finally I take this chance to thank all o...

We describe a method to estimate the power spectral density of nonstationary noise when a noisy speech signal is given. The method can be combined with any speech enhancement algorithm which requires a noise power spectral density estimate. In contrast to other methods, our approach does not use a voice activity detector. Instead it tracks spectral minima in each frequency band without any dist...