نتایج جستجو برای: variable wind system

تعداد نتایج: 2497474  

2015
W. E. Leithead M.C.M. Rogers D. J. Leith B. Connor

Owing to concern over the environment, there is much interest in renewable sources of energy, one of the most promising of which is wind power. Wind power is not yet a mature technology and one of the issues to be resolved is the most effective manner in which to regulate the wind turbines are posed by the different wind turbine configurations. A variety of control design tasks with differing o...

2012
Gaurav Mishra Ruchi Mishra

The global electrical energy consumption is still rising and there is a steady demand to increase the power capacity. Deregulation of energy has lowered the investment in larger power plants, which means the need for new electrical power sources may be increased in the near future. In general, this paper discusses role of modern power electronics in small size wind energy and hybrid generating ...

2015
Stephin Joseph Neenu Rose Antony

39  Abstract— Utilization of wind power as renewable resources of energy has been growing rapidly around the world in the last decades. Wind power generation is fluctuating due to the variation of the wind speed. Therefore, the assessment of the output power of this type of generators is always associated with some amount of uncertainties. The output voltage and frequency from the ac generator...

Journal: :Simulation Modelling Practice and Theory 2008
Zhixin Miao Lingling Fan

Both fixed-speed squirrel-cage induction generators and variable-speed doubly-fed induction generators are used in wind turbine generation technology. Modeling and simulation of induction machines using vector computing technique in Matlab/Simulink provides an efficient approach for further research on wind generation system integration and control. In this paper, the vector computing technique...

2013
Meng - Jen Chen Yu - Chi Wu Guo - Tsai Liu Sen - Feng Lin

With continuous rise of oil price, how to develop alternative energy source has become a hot topic around the world. This study discussed the dynamic characteristics of an island power system operating under random wind speed lower than nominal wind speeds of wind turbines. The system primarily consists of three diesel engine power generation systems, three constant-speed variable-pitch wind tu...

Fossil Fuels are always considered as environmental pollutants. On the other hand, the political and economic situations highly affect the price of these fuels. Offshore wind and wave, as renewable energy sources, represent the better alternatives for electricity generation. Therefore, it is necessary that wind speeds effectively be estimated due to the absence of field measurements of the wind...

2010
Preston Johnson

The use of condition monitoring (CM) in wind energy machines continues to evolve as wind energy machines grow in size and move offshore. Early and smaller wind generation machines offered little financial incentives for condition monitoring, justifying only simple and inexpensive health monitoring technologies. Today, multi-megawatt wind machines are more complex, more difficult to physically r...

2014
D. Manivannan

The paper presents the modeling of a solar-wind-hydroelectric hybrid system in Matlab/Simulink environment. The application is useful for analysis and simulation of a real hybrid solar-wind-hydroelectric system connected to a public grid. Application is built on modular architecture to facilitate easy study of each component module influence. Blocks like wind model, solar model, hydroelectric m...

Journal: :international journal of smart electrical engineering 2014
mehrnaz fardamiri seyed zeinolabedin moussavi

in recent years, there has been a fast growth in wind energy conversion system (wecs). there are two general types of wind turbines in wecs: fixed speed wind turbines and varying speed wind turbines.permanent magnet synchronous generator (pmsg) is one of the most attractive generators for the varying speed turbine wecs.in this paper, a fuzzy controller is proposed to control the current source ...

2011
Cristian Dragoş Dumitru Adrian Gligor

The paper presents the modeling of a solar-wind-hydroelectric hybrid system in Matlab/Simulink environment. The application is useful for analysis and simulation of a real hybrid solar-wind-hydroelectric system connected to a public grid. Application is built on modular architecture to facilitate easy study of each component module influence. Blocks like wind model, solar model, hydroelectric m...

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