Designing Small Wind Turbines

10V 5kW and 6000 RPM. sounds like the alternators I normally play with in my systems design. However I must ask why 10V? This is not a regular battery voltage so evidently you are not planning to store surplus energy during high winds for use during low wind periods. And how do you propose to regulate things so precisely? Do you have any idea what is involved in regulating generators over a wide dynamic range of speeds? Winds speeds may be steady over the short term but but are considered variable in the long term. Experiments going back 40 - 50 years have proved that regular automotive alternator design is NOT normally suited to wind turbine design. Evidently you have something slightly different. but the requirement for 6000 RPM makes me thing you are still using automotive type sizes and concepts.

Wind turbines generally turn at slow speed. This is necessary to prevent the prop tips from shattering as they approach supersonic speeds. Blade flutter is another issue. Savornius type rotors have their own design issues. Large mega watt designs have gearboxes that speed up the slow prop speed to the fast speed required in any sort of alternator.

Currently the most efficient designs involve using permanent magnets. However the difference between low wind speed output and high wind speed output will make it very difficult to maintain a stable 10V output. PM designs have inherently poor regulation. since the magnetic field cannot be adjusted as easily. I have seen copper shunt brake designs but they generate a lot of heat.

The control and regulation of wind turbine voltage output is best done with electronics and is actually a separate stage from the generation of power in the first place. 10 volts is really odd ball, even if you are not thinking of storage? and if battery storage is not contemplated why even think of low voltage with the inherent problems associated with so much amperage. contemporary design leans towards much higher voltages to minimize the current for the same power levels.

I squared R losses at 10 volts is horrific. the cost of copper alone will kill your project.

Is the intent of your design to make a better mouse trap as in a more efficient wind turbine or is the intent simply to create enough power at a stable 10V but with 5kW of power capacity.

If the latter we may be able to help you find an off the shelf solution. If the former, best of luck to you and more power to you if you have the perseverance to stick with it from concept to prototype development.

5 kW is a substantial amount of power. Have you done a proof of concept in a lower powered model that is less expensive to build and doesn't require as much in the way of material strenght?

Even a 500 watt model would be useful to proof the concept and to demonstrate any superiority over existing 500 watt designs already on the market.

It's not possible to understand your question.

To evaluate such project, you must do it through your own business or contractor. Viability means that you must evaluate if you or your contractor can afford the money you must spend to develop it and estimate how long its gonna take to have it back, first of all. But to accomplish that, you must take in account what you'll have to have designed, what you'll have to have assembled, what you'll have to have built, what you'll do for yourself, include logistics, advertising, dinner with customers, etc...

It seems that you have a lack in project managing, not in equipment development.

Second, if you inform where you are, someone can help to point to some shop that will build a prototype for you, or even some candidates to help you may arise and join the project as contributors or even "share holders". Then, I'm pretty sure that some university around will count with a wind tunnel that can be used to measure the device performance.