From: tony.sunnysky@gmail.com   
      
   On Saturday, 23 October 2021 at 15:33:09 UTC-4, Curious Engineer wrote:   
   > I am looking into powering a high voltage, high frequency output (up to   
   20kV, 20kHz) with a sine wave signal from a flywheel that can spin at any   
   speed up to 50,000 RPM.    
   >    
   > The output voltage and frequency is user defined and should remain constant,   
   although the flywheel's speed may change. Power output is in the kW range. Of   
   course, a high efficiency converting mechanical energy to electrical energy is   
   desirable.    
   >    
   > Any suggestions on where/how to start?    
   >    
   Start with an air bearing spindle flywheel in a vacuum with no eddy currents   
   to make it as lossless as possible.  But low RPM is better.  Then consider the   
   skin effect losses at 20kHz with a low inductance Litz wire windings on a PM   
   core. Then forget    
   about over unity power generation with an alternator.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)