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## aep flat rate Post Review

󾭻FLAT RATE MONTHLY TRAINING󾭻 󾭞ONE ON ONE TRAINING OR DUO TRAINING SESSIONS WITH AN AEP TRAINER/COACH 󾭞MAKES A... https://t.co/3LC6ofCnOD

## aep flat rate Q&A Review

### How can one convert wind speed to the amount of energy that will be produced by a wind turbine? Assume the efficiency of the turbine is known.

Every model of turbine on the market has a published power curve that describes power output at specific wind speeds. You don't need efficency, you just need the power curve in tabular form. Furthermore, you will almost always find a table of annual energy production at a specific wind speed in the turbine's specifications literature. For more granular detail you can also search for the certification report for the turbine which will likely give the power curve and AEP data in smaller increments in tabular form. AEP numbers for a specific wind speed will typically predict actual production for average wind speed plus or minus 10%. So if you know average wind speed at 100 meters and you have a turbine with a hub height of 100 meters and say an average wind speed of say 7 meters per second, you can look up 7 m/s AEP and get a good ballpark number for AEP. A more precise way to estimate output is to find a good wind study to give percentage of time for specific wind speeds throughout the year and model output based on those percentages. Please note: With regards to efficiency, that efficiency is relatively constant increasing slightly from about a meter per second of wind speed over cut in speed to about a meter per second before the power curve tops off at the rated power of the turbine. The decline in efficency as you approach rated power is intentional because you never want to overpower the generator. Once you hit rated power efficiency falls off rapidly because the turbines blades continuously are pitched to prevent overpowering as wind speed increases resulting in taking an ever decreasing percentage of the power in the wind. For example: Say you are looking at a 2.0 megawatt turbine with a cut in speed of 2.5 m/s that achieves rated power at 11.0 m/s. From 2.5 to 3.5 m/s the curve will rise slowly and then arch up to a steeper pitch until around 10.0 m/s when the curve will rapidly drop in pitch to a flat line of constant output from 11.0 m/s upwards. This curve follows a cube function for the most part, however, some of the early low acceleration is driven by non optimal blade pitch for efficient transfer of wind power as well asovercoming inertia and higher torsional forces as the blade set accelerates from a dead stop. Part of this early “low efficiency" is really not a reduction in power transfer. Instead is is a sharing of power transfer between overcoming friction and torque of the mechanical systems versus the mechanical loads of the gen set imposed by magnetic fields.

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