Various Energy Storage Devices and Their Control Techniques

International Journal of Trend in Scientific Research and Development, 2018

Due to the global environmental concerns, increasing energy demands and developments in renewable energy technologies present a new opportunity to implement renewable energy sources. Wind energy is the most prominent among renewable sources, as it is an inexhaustible resource and its exploitation has thus far been ecologically friendly. The potential amount of wind energy is considerably greater than current worldwide energy demands. Wind energy has been developing more rapidly than the other renewable energy sources for the last few decades. The best way to harvest the wind energy is wind turbines. This paper presents a study on wind energy in the form of a stand-alone and hybrid power generation system used to electrify off-grid locations. The stand-alone wind-diesel system developed here is intended to be used to power a single house or a small community and it also functions as a mini-grid, generating power in places where adequate wind speed is available throughout the year. Ho...

Developing technology to store electrical energy so it can be available to meet demand whenever needed would represent a major breakthrough in electricity distribution. Helping to try and meet this goal, electricity storage devices can manage the amount of power required to supply customers at times when need is greatest, which is during peak load. This paper focuses on four storage technologies that can be used as storage for wind energy conversion system. For each storage technology, the advantages and disadvantages, costs involved, the efficiency, the energy density and some major break-through in technology are discussed.

Journal of KONES

There has been a big increase in production and investments in wind turbines and wind farms in last 20 years. New generation of wind turbines is more reliable than from 1980’s are, which necessary condition is energy production is to play an important role among renewable energy sources. Over the last 30 years, the size of wind turbines increased 7 times, as nominal power increased nearly 14 times. At present, turbines capable of producing over 10 MW of power are being developed. The main reason for continued growth of turbines sizes is to minimize the energy cost per kilowatt-hour. However, it is worth remembering that according to the „square-cube law”, there is a maximum size after the surpassing of witch the cost of ever-larger turbines would grow faster than financial gain from the increased size. In this article, authors present energy storage methods and devices for wind power plants and cost-effectiveness of the individual energy storage methods. Authors also present data ab...

Conference IRSEC2015, 2015

In this paper, we present an overview of energy storage in renewable energy systems. In fact, energy storage is a dominant factor. It can reduce power fluctuations, enhances the system flexibility, and enables the storage and dispatching of the electricity generated by variable renewable energy sources such as wind and solar. Different storage technologies are used in electric power systems. They can be chemical, electrochemical, mechanical, electromagnetic or thermal. Energy storage facility is comprised of a storage medium, a power conversion system and a balance of plant. In this work, an application to photovoltaic and wind electric power systems is made. The results obtained under Matlab/Simulink are presented.

Renewable and Sustainable Energy Reviews, 2013

Wind Energy is a fast developing source of energy since 1996. Despite its advantages, this energy could never be a primary source of electric power to be integrated into the grid even in high wind areas, such as Great Plains, due to its intermittent behaviour. This intermittency will generate intermittent power to grid, which leads to instability, unreliability and power quality problem onto the grid system. One of the widely accepted methods to overcome this problem is by coupling the wind turbine with the energy storage system. This paper reviews the ability of four different types of the energy storage system to mitigate the power fluctuated into the grid, especially during low wind speed. This paper also explains the operating principles and the different methods of charging and discharging the energy storage. The ability of permanent magnet synchronous generator (PMSG) in dealing with variable wind speed also will be discussed.

IEEE Power Engineering Society General Meeting, 2005, 2005

A simple probabilistic method has been developed to predict the ability of energy storage to accommodate the intermittency of wind-powered generation. This method can estimate the fraction of time the store is empty or full, the amount of wind energy that must curtailed and the amount of electrical demand left unsatisfied by wind power alone. The method can be applied to stand-alone systems or to weak electricity grids where the level of wind powered generation would be limited by network constraints. A wide range of time scales from seconds to months can be accommodated. The method is briefly outlined, and illustrated by example.

2010 IEEE International Symposium on Industrial Electronics, 2010

As the installed worldwide wind energy capacity increases about 30% annually and Kyoto protocol that came in force in 2005, wind penetration level in power system is considered to significantly increase in near future. Due to increased penetration and nature of the wind, especially its intermittency, partly unpredictability and variability, wind power can put the operation of power system into risk. This can lead to problems with grid stability, reliability and the energy quality. One of the possible solutions can be an addition of energy storage into wind power plant. This paper deals with state of the art of the Energy Storage (ES) technologies and their possibility of accommodation for wind turbines. Overview of ES technologies is done in respect to its suitability for Wind Power Plant (WPP). Services that energy storage can offer both to WPP and power system are discussed. Moreover examples of already existing installations are shown.

International Journal of Trend in Scientific Research and Development

Renewable Energy Sources are generally utilized in power generation nowadays. Energy storage is a governing factor. It can decrease power variation, improve the framework adaptability, empowers the capacity and dispatching of power produced by renewable energy sources, for example wind, solar etc. Distinctive storage methodologies like Compressed Air Energy Storage System (CAES), Voltage Regulation-Battery energy storage system are utilized in electric power framework. Energy storage is included in a storage medium, a power transformation framework and an equalization of plant. Electrical energy storage can possibly raise the circumstances by empowering the renewable energy to store in place of curtail and can be utilized in future.

Proposed work has demonstrated renewable energy source wind as an independent source of electrical power in many sparsely populated remote areas, where the demand for power is low. Paper has shown AC-DC-AC connectivity of wind farm through Rectifier inverter to an AC load. Mat Lab simulation results of wind farm connectivity to an AC load of lumped type is done. Work has demonstrated simulation of wind system in MAT LAB for two different wind speeds, 15 m/s and below 6 m/s. Work has presented use of ideal switch as charge controller based on pulse generated from the generated voltages of wind system. The gate input for the closing of the switch is in the form of pulse generated which is a function of wind speed. For speeds less than 6 m/s, no pulse formation for charge controller to act. Charging and discharging of the battery is through charge controller. Ideal switch does not close to allow charging of the battery for speeds less than 6 m/s and closes for speed greater than or equ...

2015

Energy is an indispensable element for human survival. Most of the energy sources that we are currently using are nonrenewable forms of energy. These sources are limited and are exhausting at a fast rate. For non-renewable sources we have oil, coal, petroleum to list some. In this scenario of scarcity of energy, renewable form of energy provides a better and more secure option. We need to use the renewable sources to their full extent in order to reduce the burden on the non-renewable sources of energy. But these sources do have some limitations. Solar energy is not available at night, wind energy depends on the intensity of the wind speed and hydro power plant’s installation takes a toll on the environment as it damages the environment and its nearby habitat adversely. We have the technologies for the generation and implementation of these renewable sources of energy but we lack in the storage sector. The energy systems in India have an outdated storage method. We need some reliabl...