By Sheng Jin, Byung-Jae Choi (auth.), Tai-hoon Kim, Hojjat Adeli, Adrian Stoica, Byeong-Ho Kang (eds.)
This e-book includes chosen papers of the overseas meetings, CA and CES3 2011, held as a part of the long run new release info expertise convention, FGIT 2011, together with GDC 2011, Jeju Island, Korea, in December 2011. The papers provided have been rigorously reviewed and chosen from a number of submissions and focuse at the quite a few facets of regulate and automation, and circuits, regulate, verbal exchange, electrical energy, electronics, strength, approach, sign and simulation.
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Extra info for Control and Automation, and Energy System Engineering: International Conferences, CA and CES3 2011, Held as Part of the Future Generation Information Technology Conference, FGIT 2011, in Conjunction with GDC 2011, Jeju Island, Korea, December 8-10, 2011.
The aim of using resistance is to decrease the angular velocity by friction between blades and axis of internal turbine of ring. Moreover, pitch angle is controller in order to decrease the angular velocity by friction which made by collision between wind and surface of blade. In next chapters, the detail dynamics and control method of wind turbine system and the comparison of adaptive and passive control of resistance are shown. -h. Kim et al. ): CA/CES3 2011, CCIS 256, pp. 26–35, 2011. © Springer-Verlag Berlin Heidelberg 2011 Analysis of Non-linear Adaptive Friction and Pitch Angle Control 2 27 Introduction to Small-Scaled Wind Turbine System From old times, the utilization of small-sized wind turbine is widely used for pumping up and so on.
7 Conclusion The algorithm GRASP GSP was shown to ﬁnd good quality solutions to the GSP-EC when applied to a series of heterogeneous test cases with up to 100 nodes and up to 406 edges. It was also shown to guarantee for all instances a non-zero probability of ﬁnding an optimal solution avoiding local optima traps (see ). For all cases with known optimal cost the algorithm was able to ﬁnd solutions with costs no more than 0,74% higher than the optimal cost. Signiﬁcant cost reductions are achieved after applying the local search phase over the greedy solutions built by the construction phase.
However, by adaptive control in figure 3, the angular velocity is converges to reference without oscillate. Also the performance of the angular velocity is quite better than the passive control. Analysis of Non-linear Adaptive Friction and Pitch Angle Control 6 35 Conclusion In this research, we aim to avoid the excess of wind turbines angular velocity using axis friction and pitch angle. As a result, the passive control with and without damper, it was the most inefficient and unstable scheme. Therefore, utilization of passive control in angular velocity control is not suitable perspective from efficiency energy generation and stability.