I must replay you here because I have only 6 posts and I can't send you PM
Quote:
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Originally Posted by Weisheimer
Hi Peja,
Perhaps a few questions first.
What is the voltage of your system?
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120v - 10 12v Lead acid battery for now
What is the AH rating for your batteries?
100ah
Which motor are you using for your vehicle?
Is it a series wound DC motor with A1, A2, S1 and S2 leads?
Or, is it a permanent magnet motor with only 2 leads?
serial wound DC, two terminals
What is the voltage and current rating for the motor?
72v, 85a (I think), 2200 rpm
The Mosfets can be driven with a 0 to 12V signal quite nicely.
12 volts will turn the Mosfets on, and 0V will turn them off.
I know that, I ask which voltage is the best to trigger gates for my case (40 pcs IRFP260N), is it the best to be 12v or 20v or some other?
You have seen the drive used in the Curtis controller.
Take a look at a Leeson controller too.
They are using 40106 schmitt triggered drive (U1) that will
give a solid square wave drive to the gates of the IRFZ44 Mosfets.
This is some low end kontroler I think, I have PIC in my control board.
Look at the Mosfets beside the motor, they have
tied the gate to the source and are thus using them
as Diodes for the freewheeling diode.
You could do that too.
Yes, I'll do that
http://www.leeson.com/TechnicalInfor...dcadjspeed.pdf
I have sent this as a PM since it is not discussing the REVOLT controller.
OK
Cheers
Mark
Thank you
Peja