University of South Wales Master of Sciences Thesis

 
Standalone hybrid generation system for the remote area of Thar, Pakistan
 
 
 
4.3.1. Wind Turbine Model 
Fig. 4.14 Wind turbine Model. 
From the above model we can see that a wind turbine is connect to the permanent magnet 
synchronous generator and generator output is connected to the load. As generator used in the wind 
turbine produce AC voltage hence we don’t need DC-AC converter but still the output voltage from 
the generator is not steady that’s why in the Hybrid generation system model the output voltage will 
go through AC-AC inverter to get steady voltage which then become easy to control and transfer to 
the micro-grid. 
For the wind turbine to work efficiently two factors are very important, i-e wind speed and type of 
generator. The generator used in this system has 90-95% which is pretty good and from the site 
analysis discuss in chapter-2 we can see that the location has have an average wind speed of 8 m/s 
which is slightly less then desired speed to get the maximum rated power output but generator cut-in 
speed is 4 m/s hence wind turbine will be able to produce enough energy to balance the demand with 
the help of other renewable resources. Below figure shows the wind turbine characteristics and wind 
speed received by the turbine.

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