I have modified the teeny tiny 6 fet Infineon that is a credit card size.
http://cgi.ebay.com/48V-350W-brushless- ... .m20.l1116
I ran 4110's
Soldered the shunt to 1.2mOhms
I have been running it at 48V 50A and pulling 2,400W all the way to the freewheel speed.
I can only imagine how much you could pull from a full sized infineon
Does not even get warm.
To bump up to higher voltage all you have to do is run the 100V caps and the any voltage mod that those characters came up with.
No doubt the Infineon controllers are a viable cheap option, especially with the programming capability
Only obnoxious thing about them is the slow start up.
Kelly still offers higher level functions that the Infineons dont:
over temperature control for the motor and controller
the option to treat the throttle as Speed control, Torque control, or a mix
Options to run 0-5V, 5V-0V, etc on inputs
Variable Regen and switch regen
Huge voltage range up to 150V and currents up to 400A
etc.
The Kelly is just another class of controller to my mind. 90% of people need an infineon but some of us like to have the extra goodies.
But that should not be the focus of this discussion...
It really does not matter what controller we use.
Any controller will work
I will be implementing this concept with a very large, very high power project that I have in the works.
I have been fretting over how to control the power and now I know
Thanks again Georgeycc
-methods
Increasing battery voltage and controller current limit will result in a non linear experience