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   alt.engineering.electrical      Electrical engineering discussion forum      2,547 messages   

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   Message 2,384 of 2,547   
   gareth evans to Curious Engineer   
   Re: Flywheel -> high voltage, high frequ   
   24 Oct 21 12:16:45   
   
   From: headstone255@yahoo.com   
      
   On 23/10/2021 20:33, 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?   
   > Would it be better to try to design some clever mechanical gearing system to   
   deliver a constant output RPM regardless of input RPM, and then use that to   
   run an alternator?   
   > Or would it be better to harvest the mechanical energy to electrical energy   
   at any RPM, and re-convert it to the signal I want?   
   > What kind of signal generator is suitable for powers in the kW range?   
   Somehow I don't think an Arduino would cut it.   
      
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