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Re: is this the correct piggy?



Original poster: "Steve Ward" <steve.ward@xxxxxxxxx>

Hi Gerry,


Yes and No.  If I assume the real power draw is 15KW (resonable
assumtion for a 120 BPS SRSG), then the bang energy needs to be the
same as with a 14.4KV PIG, 15KVA, using a SRSG at 120 pps.  As the
voltage drops the V^2 portion of 1/2 CV^2 drops by one fourth so the
C needs to be four times larger at half the voltage(everything else
the same).  Read this as twice the cost of your tank cap.

Are you saying the cost per Joule changes with the voltage?

Maybe you need to read your own post twice, Gerry ;-)

The cap bank will cost the same $$ per joule, i dont care what your
transformer is.

Steve Ward

 If you use
a ARSG at say 400 pps and keep this presentation rate the same
between the two examples, the same thing can be said.  If you dont
increase the cap, then the average BPS would need to increase to
balance the energy flow rate and this means a higher Irms thru the
caps and is potentially another cost increase in the capacitance..