International Journal of Innovative Research in Advanced Engineering (IJIRAE) ISSN: 2349-2163 Issue 05, Volume 7 (May 2020) https:/ / www.ijirae.com/ archives __________________________________________________________________________________ IJIRAE: Impact Factor Value – Mendeley (Elsevier Indexed); Citefactor 1.9 (2019); SJIF: Innospace, Morocco (2019): 6.980 | PIF: 6.445 | Jour Info: 7.085 | ISRAJIF (2019): 6.456 | Indexcopernicus: (ICV 2019): 194.35 IJIRAE© 2014-2020, AM Publications, India All Rights Reserved Page–279 SMOOTHING OF WIND POWER FLUCTUATIONS IN WI ND TURBI NE GENERATOR SYSTEM BASED ON LI NEAR POWER REFERENCE STRATEGY Iwan Setiawan * Electrical Engineering Dept. Universitas Diponegoro, Semarang, Indonesia iwansetiawan@live.undip.ac.id Trias Andromeda Electrical Engineering Dept. Universitas Diponegoro, Semarang, Indonesia trias1972@gmail.com Mochammad Facta Electrical Engineering Dept. Universitas Diponegoro, Semarang, Indonesia mochfacta@gmail.com Hermawan Electrical Engineering Dept. Universitas Diponegoro, Semarang, Indonesia hermawan.60@gmail.com Achmad Hidayatno Electrical Engineering Dept. Universitas Diponegoro, Semarang, Indonesia achmad.hidayatno@gmail.com Manuscript History Number: IJIRAE/ RS/ Vol.07/ Issue05/ MYAE10083 Received: 02, May 2020 Final Correction: 11, May 2020 Final Accepted: 17, May 2020 Published: May 2020 DOI: https:/ / doi.org/ 10.26562/ ijirae.2020.v0705.001 Citation: Iwan, Trias, Mochammad, Hermawan, Achmad (2020). Smoothing off Wind power Fluctuations in wind Turbine Generator System Based on Linear Power Reference Strategy. International Journal of Innovative Research in Advanced Engineering (IJIRAE), Volume VII, 279-288. Editor: Dr.A.Arul Lawrence Selvakumar, Chief Editor, IJIRAE, AM Publications, India Copyright: ©2020 This is an open access article distributed under the terms of the Creative Commons Attribution License, Which Permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited Abstract: It is well known, that to achieve the maximum power in wind power generation systems, the maximum power point tracking (MPPT) algorithm should be employed as the main strategy to extract the wind power. However, due to the intermittent and unpredictabe nature of the wind speed, then the usage of the MPPT without using any compensation, will practically generate severe power fluctuation. The high fluctuation of the wind power basically come from to the cubic curve relation between the extracted wind power and wind speed in the MPPT method. To minimize the high fluctuation of the extracted wind power, in this paper we propose a simple linear power or a constant torque reference strategy. Based on simulation result run at Matlab/ Simulink, it is shown that the power extracted by using a linear power or a constant torque reference is smoother compared with the usage of the maximum power point tracking strategy. However, by using this strategy the power average is lower than the MPPT. Keywords : Wind turbine; MPPT; smoothing; constant torque, wind fluctuation