Wind energy is seen as green energy and it is one of the fastest growing sources of electricity around the world. (Brown & Escobar, 2007) In the U
The frequency of the converter is vital to the general functionality of the machine. The Doubly fed induction generator machines have the sole purpose of varying speeds of the shaft of the machine (Abad, 2011)
Unlike other machines, doubly fed induction generator has the capacity to be changed and be converted into rotor that is wound and with doubly fed electric motor. This offers more advantage to the use of the machine even with single fed systems and operation in the generation of power in powerhouses (Ackermann, 2012)
The generation of the magnetic flux plays a critical role in alleviating for the generation and use of power in every sector of operation within the machine. The generation of the magnetic flux is not weakened by the supposed operations that dictate the general productivity and efficiency of the machine while in the field of use (Datta & Ranganathan, 2002)
Moreover, the machine has the entire capability to operate as a synchronous speeding machine while producing the required amount of energy. When the machine is operating at a super synchronous speed, the stator and the rotor act in a way to produce power that is supplied to the grid (Earnest & Wizelius, 2011)
Moreover, the machine has the entire capability to operate as a synchronous speeding machine while producing the required amount of energy. When the machine is operating at a super synchronous speed, the stator and the rotor act in a way to produce power that is supplied to the grid (Earnest & Wizelius, 2011)
The relational motion that exists between the field of magnetism and movement of the rotor produces an induced electric current within the bars of conduction in the available fields. In revolve, the currents lengthwise in the conductors changes in a manner similar to the magnetic behavior of the motor (Eremia, 2013)
This is the sub-synchronous functionality of the machine. When the rotor has a rated torque, another power (the rated active power) will be manifested and used within the machine (Flannery, 2008)
This means that the voltage of the machine cannot be regulated with ease. This is another feature that states the difference between the two categories of the machines in the market (Gieras et al
When the slip of the material increases, skin effect starts to reduce the effective depth and increases the resistance. This matter has its own effects as it results in reduced efficiency but still maintaining torque (Kaz-mierkowski et al
The direct current within the rotor field winding is determined through a slip-ring congregation or manufactured by a brushless exciter on the same shaft. This categorical facet differentiates between the several facets of performance within the three major types of power generation mechanisms (Kinnunen & Lappeenranta, 2007)
This is one of the fields where the excitation field is provided by a permanent magnet and not the coil as in other machines. Several synchronous generators are the majority source of marketable power (Pyrhonen et al
The rotor becomes one of the factors of operation that are used within the stakes of the magnetic field but within the notion of lower rates in rotation. The lower rates of rotation result in what is termed as slip and increase in the overall amounts of loads (Rashid, 2010)
The characteristics of the machine that are similar to the general perception of the machine or the generator are revealed. This happens mostly during the transients in the grid stages (Soloumah, 2009)
This happens if all the active windings are rated within the half of the total synchronous operation of the machine. The general productivity and operation of the machine is done within half the sub-synchronous probabilities of the machine while in operation (Tong, 2010)
"While progress in adopting more energy-efficient technologies has saved billions of dollars throughout the economy," Brown and his colleagues note, "most other indicators of energy autonomy -- such as the percentage of imported fuel -- demonstrate that the country has become less independent than ever" (5). Furthermore, there have been significant investments at both the federal and state level in such alternative energy sources as biomass production, geothermal sources as well as wind, and solar power, but all told, these alternatives sources have only achieved a mere 2% share of electricity generation during the past 3 decades (Brown et al
com/news2/wind_farm_4_hnd.jpg Likewise, the off-shore wind farms that are cropping up off the coast of Europe (see illustration in Figure 2 below) have been cited as potential hazards to shipping both in terms of their size (more than 600 feet tall!) as well as potential interference with ships' navigation systems (Gray 2008)
has grown from 10 megawatts ('MW') to over 6,000 MW in 2003" (341). A number of factors have contributed to this impressive growth rate, including increasing environmental concern over traditional energy sources as well as the economies of scale and operating efficiencies being introduced in wind power technology (Hansen)
I'm against 130 of them over 400 feet tall right smack in the middle of one of the most beautiful places in America'" (quoted in Keley at 490). Furthermore, some environmentalists have also cited wind farms as potential hazards to migrating birds and bat populations (Motavalli 2005:27)
Nevertheless, wind power does appear to represent a viable alternative energy sources in some regions of the country and elsewhere in the world today. Indeed, by 2002, India had already installed 1,167 megawatts of wind farms; further, Canada, Japan, Norway, and Germany have active Joint Implementation Programs that provide support for their wind power programs, and Costa Rica has three wind power projects included among its alternative energy initiatives (Ottinger 2002:331)