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  1. sho2010

    V/RPM to V/(rad/s) in electrical radians conversion

    If Ke = V/RPM, converting to mechanical radians would be: 60s/(2*pi radians) =9.55V/(rad/s). Converting to electrical radians: we would multiply the above by (pole pairs * radians mech) / (radians elec). Thus converting V/RPM directly to electrical radians would be: : (pole pairs * 60s)/(2*pi...
  2. sho2010

    PM Alternator Phase Losses

    Skogsqurra I think what you are saying appears to make sense. I would like to understand this interaction a bit more. Are there any links or books that discuss this particular issue?
  3. sho2010

    PM Alternator Phase Losses

    Voltage drop does occur with load and this makes sense to me. We do a lot of voltage controlled systems by regulating RPM. The problem I am having is that if I take each phase set "individually", they each will produce 10 Amps DC out of 3-phase diode rectifier into the load at 3000 RPM...
  4. sho2010

    PM Alternator Phase Losses

    Is there a way to prove or measure this? When we look at each set independently every one checks out within reason. I have not come accross such a problem like this but then again I have not had so many independent windings before on a single stator. Do you know if this is a common problem...
  5. sho2010

    PM Alternator Phase Losses

    If I have 10 sets of 3-phase windings on a stator where each of their neutrals are isolated from each other ("Y" types), If I begin to connect each set to a 3-phase rectifier one by one, why would I have to keep raising the RPM of the machine to maintain the "expected" current out? For example...
  6. sho2010

    BLDC (PM) motor mystery

    In my case I received a motor and was told it was wound for a DC Link of around 600VDC and could spin at speeds of up to 24000RPM. In actuality it was wound for 350VDC link for 24000RPM. How can I tell if a BLDC motor is wound for the proper voltage based on the following caveats which is all...

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