International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 02 | Feb -2017
p-ISSN: 2395-0072
www.irjet.net
STUDY OF USING SOLAR ENERGY SYSTEM TO SUPPLY A DATA CENTER Mohammad Yousefi1, Pedram Ghalebani1 1Semnan
University, Department of Electrical and Computer Engineering, Semnan, Iran.
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Abstract - Supplying the electrical energy of a data center is
ways using a range of ever-evolving technologies. Solar radiation is considered as an available renewable energy on earth. To harvest the solar energy, the most common way is to use solar panels. The tilt angle of the solar panels plays an essential rule in capturing maximum solar radiation. Akhlaghi et al. [9] studied the sufficient number of optimal tilt angle adjustment to maximize residential solar panels yield. Every day earth receives a great and considerable amount of energy, the amount of solar energy reaching the surface of the planet is so vast that in one year it is about twice as much as will ever be obtained from all of the Earth's nonrenewable resources but only small portion of this energy can be utilized. Developing accurate models can effectively predict the availability of solar energy based on weather forecasting [10]. In [11], a linear parameter varying model is developed that is capable of the taking uncertainties into account especially in climate related data. No need to mention that, solar cells are subjected to severe weather conditions and impact by foreign objects. Khalili et al. [1213] introduced a wave propagation based health monitoring method using WSFE-based UEL which has a great potential to be employed in order to detect and localize any possible damage in solar cells and panels. Meshless methods such as peridynamics [14-15] can also be used in health monitoring of solar systems.
an important issue that plays a major role in design, reliability and operation of the data center. IT and data center industries will make very significant improvements over the next few years which indicates an ever growing demand of energy for data centers which can contribute to more consumption of resources and more generation of carbon. More and more, data centers are being asked not only to pay greater attention to their energy consumption, but also to consider and understand their relationship to the greater environment such as exploiting renewable energy. It implies that it is no longer just about how energy is used, but also about how it is produced. In order to use renewable energy as a power supply, its conformation to requirements of a data center should be considered, which are desired reliability and power quality. In this paper solar energy is investigated if it can meet the requirements of data center power supply. Key Words: Solar Cell, Data Center Power Supply, Renewable Energy, Energy Demand, Solar Energy
1. INTRODUCTION Providing the electrical energy needed for operation of the data center is an ingenious and important approach. Electrical system of the data center includes transformer, generator, panel board, UPS and etc., and it can have different layouts and configurations. It plays an important role in determination of reliability of the data center and also affects the total cost of operation. If the harmonics ignored properly, the grid connection can affect the power market price [1]. They also can behave differently in islanding detection in case of using synchronous generators is the grid connected system [2].
Solar power is obtained when the sunlight is converted into electricity. It can be done, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Solar energy is not available at night, and energy storage is an important issue in order to provide the continuous availability of energy. Because modern energy systems usually assume continuous availability of energy, especially for a data center, solar energy must be stored in different forms. Gharghabi et al. [16-18] investigated the effect of the various contingencies to happen on the structure of a data center.
Nowadays the growing developments of data centers along with other recent technologies such as plug-in electric vehicles are imposing constantly increasing in demand of energy to power plants [3]-[8], considering the limitations of fossil fuels such as the terminable sources used to generate the electricity and the pollution caused by generation of electricity from fossil fuels, the necessity of finding alternative source of energy gains a great importance and IT industries are more convinced to exploit other sources of energy, called renewable energy. In order to achieve this goal different sources of energy, other than fossil fuel exist.
Since solar energy is not a permanent source of energy, and providing a continuing and constant energy for a data center is vital and indispensable, another reliable source of energy is definitely needed. In this paper, the power grid is considered to operate as a secondary source of energy, thus it guarantees that energy is always delivered to the data center, when the solar energy is not available for any reason. Although solar energy has been substantially overlooked for years because of its unsecure and intermittent nature, the current climate concerns and energy crisis urge governments and academia to dedicate a large body of research and investigation to enhancing solar energy
Solar energy, in the form of radiant light and heat from the sun, has been harnessed and utilized by humans in different
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