Types of wind energy converters
Posted by urjart on October 10, 2008
Types of wind energy converters:
Before we go into further details about the wind energy systems, let’s see the types of wind energy converters, or turbines. They can be broadly categorized into two types;
(1) (1)Horizontal-axis wind turbines rotate about an axis that is horizontal. They include:
(a) ‘Dutch-type’ windmills-used mainly for grain grinding
(b) Multi-blade windmills-used for pumping
(c) High-speed propeller type windmills
'Dutch-type' Windmill
Multi-blade Windmill
High-speed Propeller-type Wind turbine
(1) (2)Vertical-axis wind turbines have their rotation axis vertical. They are of two types:
(a) The Savonius rotor
(b) The Darrieus rotor
The Darrieus Rotor
There exists a variant of the Darrieus rotor turbine, called the Giromill. In this the blades are straight rather than ‘troposkein’.
The Giromill
We saw in the previous post that Cp has a maximum value of 16/27. However, it also depends upon the type of turbine used.
Power Coefficient for varous wind converters
