Em 11/2/2011 10:14, Tobias Gogolin escreveu:
> The question I have is, what kind of switching power supply architecture =
would be recommendable to match lets say a 50V motor (BLDC or Asynchronous)=
 which would be fed by a 300V Bank that cant really supply the max. power c=
urrent of the motor?

A buck step-down converter?

What is the power of this motor? Keep in mind that a 20kW motor at 50V
will need 400A.


> How reasonable is it to hope that such an approach could actually be
> beneficial and eliminate key problems of battery systems (matching,
> balancing, cell failures).

I would use a higher voltage motor to keep the current at lower levels
and thus the losses low. Remember that the step-down converter also
introduces some losses and such losses are proportional to the current.


Best regards,

Isaac

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