r7 - 11 Jul 2009 - 10:21:02 - PhilipCourtYou are here: carrott.org >  ElectricSaker Web > Performance

Expected Performance

-- PhilipCourt - 25 Dec 2007

  • 1PV5135WS28 with EVI-200 Torque and Power graph (Bob has a less simplistic version with consideration for back EMF etc here):
    Torque_and_Power.jpg
Q. What voltage is required to achieve these theoretical power & torque figures?

A. 572V x 350A = 200kW, but assuming we only get 92% efficiency we need 622V (see EVI-200 specs). Having typed this, I see that MMC states that the max input current for this controller is only 280A, if this is the case, making the same efficiency assumption we need 777V to get 200kW.

Q. I'm not sure if you can do these voltage calculations quite as simply as this. I will run the numbers on my motor and see if they match. Also don't forget that the batteries will sag somewhat when you draw current.

Topic attachments
I Attachment Action Size Date Who Comment
elseods 1PV5135WS28_Torque_and_Power.ods manage 84.3 K 27 Dec 2007 - 22:07 PhilipCourt Torque and Power spreadsheet (Open Office)
jpgjpg Torque_and_Power.jpg manage 98.9 K 25 Dec 2007 - 10:56 PhilipCourt 1PV5135WS28 Torque and Power graph
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