In this post we will discuss two very important factors that define a windmill; its axis and its generator torque. The axis type of the windmill decides the whole process of capturing wind speed and the mechanism of converting it to electricity. Axis Vertical Axis Wind Turbines VAWTs have become…
It is very critical to understand the concept of wind before one thinks of generating electricity from it. There are many basics like wind blade designs, speed of wind, tower height, site location etc. which should be given due importance before going into windmill construction. This series of posts will…
Many turbine manufacturers are moving towards direct drive turbines and leaving the traditional gearbox turbines behind. Direct drive turbines achieve more reliability, efficiency and reduce the overall cost of producing electricity. In a direct drive method, power is taken directly from the mechanical source without any efficiency reductions earlier caused…
Wind energy is clean and green. It contributes towards a good percentage of total power generating resources any country has. This may reduce the consumption of other energy resources which use depleted resources and are not clean. Wind is variable and it does not provide its full power every single…
It is important for the customers as well as the manufacturers to know the voltage and rpm specifications of the product. But exactly how are they related? Simply said, voltage generated in an alternator is directly proportional to the speed of the generator or the prime mover; E = K…
Permanent magnet alternators can be operated at different speeds. Thus there are alternators working at low rpm and others at high rpm. This feature is suitable when these alternators have applications in various fields like wind turbines, hydro-kinetic energy and other renewable energy devices. For example, vertical axis permanent magnet…