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Originally Posted by cts_casemod
You can let Regen go all the way down to zero, in which case the motor will sometimes draw a bit of power if the deceleration is very slow. This is because the motor is acting as a brake to slow down the vehicle. If deceleration is slow, then the power recovered is less than the power needed to feed the stator and the result is a small power loss.
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Good description!
Quote:
The Regen itself is a bit more complex that what it would seem at first glance 
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Between single-pedal driving, the width of the 'coast' throttle range, the max regen on the throttle pedal versus pushing on the brake ... there are a lot of options that people can experiment with.
How one would configure these options, keeping the various variables or setpoints straight in your head ... remains a challenge.
The GEVCU uses a webserver built into the ethernet interface to deal with the settings, showing them on a web page and allowing for graphical representation of the options they support. This is not as complex as you have already programmed, but it's somewhere that is available to review code ... and borrow code that is already running.
The GEVCU is Arduino based, so I don't think that the code will not be verbatim, but the web interface should be close.