Classification Of WECS (Wind Energy Conversion)

CLASSIFICATION OF WECS

(1)   Based on axis

(a)   Horizontal axis machines

(b)   Vertical axis machines

(2)   According to size

(a)   Small size machines (upto 2k W)

(b)   Medium size machines (2 to 100k W)

(c)   Large size machines (100k W and above)

(a)   Single generator at single site

(b)   Multiple generators

(3)   Types of output

(a)   DC output

i. DC generator

ii. Alternator rectifier

(b)   AC output

i. Variable frequency, variable or constant voltage AC.

ii. Constant frequency, variable or constant voltage AC

(4) According to the rotational speed of the area turbines

(1)   Constant speed and variable pitch blades

(2)   Nearly constant speed with fixed pitch blades

(3)   Variable speed with fixed pitch blades

(a)   Field modulated system

(b)   Double output indication generator

(c)   AC-DC-AC link

(d)   AC commentator generator

Variable speed constant frequency generating system.

(4)   As per utilization of output

(a)   Battery storage

(b)   Direct conversion to an electro magnetic energy converter

(c)   Thermal potential

(d)   Inter convention with conventional electric utility guides