نتایج جستجو برای: wind energy conversion systems

تعداد نتایج: 1905939  

حضوری, محمدامین, عباسپور, علی, فتوحی فیروزآباد, محمود, معینی اقطاعی, معین,

In recent years, due to environmental concerns together with rising costs of the fossil fuels, the wind energy usage in electricity generation of various countries has experienced a growing trend. Owing to inherent characteristics of wind turbines output generation, i.e. uncertainty in their output level as well as being undispatchable, the rapid growth of installed wind farms, however, has cau...

2014
Bhavna Jain Shailendra Jain R. K. Nema J. M. Poggi D. Saxena S. N. Singh S. Santoso E. J. Powers W. M. Grady Malabika Basu Biswajit Basu J. Lamoree

Recently renewable energy resources especially wind power integration has been far increased in the electric power distribution system. To utilize wind power more effectively, wind energy conversion system is interfaced to grid through power electronics interfaces. In this paper, monitoring of various power quality disturbances at the point of common coupling in grid connected wind energy conve...

1966
A. WIIN-NIELSEN MARGARET DRAKE

The contribution from the divergent part of the horizontal wind to the energy conversion between the vertical shear flow and the vertical mean flow has been computed using atmospheric data from the isobaric surfaces: 850, 700, 500, 300, and 200 mb. The new calculations supplement earlier computations giving the energy conversion based on an assumption that the horizontal winds are non-divergent...

2013
Rishabh Dev Shukla R. K. Tripathi

At the present time Doubly Fed Induction Generator (DFIG) based wind energy conversion systems are widely used for large wind power plants. DFIG offers many advantages for instance reduced rating power converter, low cost and reduced losses with the better efficiency, easy in realization of power factor correction schemes, variable speed operation and four quadrants active and reactive power co...

2017
Mallikarjuna Rao

1PG scholar, Dept of Electrical Engineering, A.U. College of Engineering (A), Andhra Pradesh, India. 2 Professor, Dept of Electrical Engineering, A.U. College of Engineering (A), Andhra Pradesh, India. ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract A dual bridge rectifier topology consisting of...

2011
Ahmad Nadhir Agus Naba Takashi Hiyama

The problem of control associated wind energy conversion systems using horizontal-axis fixed-pitch variable speed low-power, working in the partial load region, consisting in the energy conversion maximization, is approached here under the assumption that the wind turbine model and its parameters are poorly known. Intelligent gradient detection method by using Maximum Power Point Tracking (MPPT...

2015
A. Y. Anekunu

This paper discusses how the switched reluctance generator (SRG) converts mechanical energy from wind via turbine into electrical energy as directed by an electronic controller. Starting with a review of the electromechanical energy conversion principles, the paper examines the implications of the energy conversion process on how the SRG is controlled. The structure of the SRG controller for sp...

2011
Md. Arifujjaman

A small scale wind energy conversion system has tremendous diversity of use and operating conditions, and consequently is evolving rapidly along with the large scale wind energy conversion system for generation of electricity in either stand-alone or grid connected applications. In recent years, the grid connected small wind turbine industry is primarily dominated by the Permanent Magnet Genera...

2012
Rishabh Dev Shukla R. K. Tripathi

Nowadays research focus is towards the Variable speed power generation in instead fixed speed power generation in wind energy conversion system. With variable speed, there will be 20-30% increase in the energy capture compared to the fixed-speed operation. For Variable speed wind energy conversion system the maximum power point tracking (MPPT) is a very important requirement in order to maximiz...

2017
Sanli Zhu Jiping Lu Zheng Li Junyi Lin

To improve the controllability of the electric power output and the economic performance of a large-scale wind farm, an auxiliary energy storage system is required. This paper deals with the rule of planning reasonable energy storage power and capacity based on the historical annual mean wind speed data, the probability density of the pulsating wind power output, and the warranted firm power pr...

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