Recent content by Vlad

Your 80% efficiency is true of induction motors which are the worst. A permanent magnet motor is around 95% efficiency. Generator to motor direct connection is then 91% efficient. That's the same as the average manual transmission. A radial piston hydraulic pump motor combo has that same...

High altitude hawt floating around 2000 feet in the air via buoyancy reigns supreme on efficiency and requires no gearing. The turbine is just an air pump for a generator at ground. Dual Vawt the size of normal sails for a boat contra rotating would be good I think. Thanks for your post.