Influence of noise of wind speed data on a wind-hydrogen system Omid Alavi, Parviz Najafi * , Abbas Hooshmand Viki Department of Electrical Engineering, K.N. Toosi University of Technology, Tehran, Iran article info Article history: Received 26 June 2016 Received in revised form 30 September 2016 Accepted 5 October 2016 Available online xxx Keywords: Wind turbine Hydrogen production White noise Weibull distribution Kirkwood abstract In recent years, the importance of greenhouse gas pollution has become a global issue. Due to environmental concerns over fossil fuels, most countries are considering renewable energies as an alternative for these traditional fuels, in order to prevent environmental damages. However, lack of year-round access to renewable resources is problematic. Nevertheless, the storage of electricity generated from these resources in the form of gas or liquid is the most sensible solution. In this study, a wind-hydrogen energy conversion system is proposed to produce hydrogen from wind energy, wherein the hydrogen pro- duction is proportional to the wind turbine output power. In this paper, three different methods for estimating average wind turbine power are studied and compared with the real power from a 2.5 MW Clipper wind turbine installed in Kirkwood. The results show that all utilized methods have an acceptable accuracy. Additionally, the effectiveness of the recorded wind speed noises on the wind turbine power and the amount of hydrogen is evaluated. As expected, the increase of the signal-to-noise ratio leads to a lower error. The results showed that if the hydrogen generated by the electrolyzer be used in transportation industry, the identified wind turbine can create the required hydrogen amount for aver- agely 43 cars/day. © 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. Introduction The rapid growth of energy demand and utilization of fossil fuels, raises serious concerns about these limited sources and their impact on environment, which includes detrimental effects on human health, global warming, and also ozone layer depletion [1]. Estimations express that world population will be increased by 1.6 billion people by 2035, which conse- quently increases the need of energy. The current dependency on fossil fuels cannot be the proper solution to this additional demand of energy [2,3]. Emersion of renewable energy sources (RES) proposed a key answer to all of these problems. This novel energy source can decarbonize the process of electricity generation, which shows significant advantages in the long run. Recently, most of the countries have proposed specific policies to reduce the energy imports and consequently use more domestic production methods, which results in giving RES more shares in electricity supply system [4e6]. Among all RES, wind energy is considered as a significant resource for replacing common energy sources, since its abun- dance and availability make it a great candidate for fulfilling future goals in energy supply field [7]. Investments in wind power area is majorly extensive, not only because it reduces fossil fuel usage and consequently decreases carbon dioxide emission, but also for its cost effectiveness. The advantages of new wind power projects have already been reflected world- wide, since a lot of new emerged local communities have been * Corresponding author. E-mail address: najafi.parviz@gmail.com (P. Najafi). Available online at www.sciencedirect.com ScienceDirect journal homepage: www.elsevier.com/locate/he international journal of hydrogen energy xxx (2016) 1 e9 http://dx.doi.org/10.1016/j.ijhydene.2016.10.032 0360-3199/© 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. Please cite this article in press as: Alavi O, et al., Influence of noise of wind speed data on a wind-hydrogen system, International Journal of Hydrogen Energy (2016), http://dx.doi.org/10.1016/j.ijhydene.2016.10.032