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Old 03-24-2010, 09:15 AM   #3258 (permalink)
adamj12b
Master EcoModder
 
Join Date: Apr 2009
Location: Charlton MA, USA
Posts: 463

EVVette - '71 Chevy Corvette Coupe
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Quote:
Originally Posted by MPaulHolmes View Post
I don't have a motor/coupler/anything that can really test 1000 amps safely.
Wrong!! Your batteries will laugh at discharging whatever a 1000A controller can use!!

Those Diehard Platinum batteries are Odyssey's . They will do 1750A for 20 seconds!!

Quote:
Originally Posted by jackbauer View Post
Paul quick question. Would it be possible to program the controller to limit the motor voltage?
I take it your thinking of adding those other 2 batteries? LOL

Basically all you need to do to limit the motors voltage would be the duty cycle. So an idea that pops into my head would be limiting the throttle range.

So right now you have 96V. The 2 other batteries would bring the voltage up to about 120V. So you will need to limit the pwm to the difference between 120V and 96V. So 120/96 = 1/25. 511/1.25 = ~409. So if you increase the value(lower number) of max throttle, t-min-rc ###, so that with the pedal to the floor, decrease the t-min-rc number till PWM max's out at 409. This will limit your 120V battery string to 96V.

-Adam
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