Generator Comparisons

All the above generators have been used in wind turbines. So there is a trade-off among (1) cost, size, and weight, (2) suitability for grid frequency, (3) blade noise, (4) energy production, (5) reliability and maintenance, (6) power quality, and (7) grid faults [9]. Many manufacturers have changed from constant- to variable-rpm operation because of energy production and smoother power due to inertia of the wind rotor. In the final analysis, the choice for the electric conversion depends on energy produced (annual) and the cost per kilowatt-hour from the wind turbine.

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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