View Single Post
Old 04-23-2014, 09:30 AM   #6488 (permalink)
duncan
EcoModding Apprentice
 
Join Date: Oct 2010
Location: southland NZ
Posts: 153
Thanks: 38
Thanked 86 Times in 55 Posts
Quote:
Originally Posted by flores View Post
Ok..and what are real numbers? 0.9V and 1.0V, that's a marginal difference of 0.1V on a total of 150V, that can't create really large current differences.. right?

I'm betting I'm wrong again?
Hi flores

My understanding is that the 150v is across the system BUT the total current goes across the IGBT's in parallel so the problem is one could do most of the work - overloading it and under-loading the other

This would not be a problem (0.1v in 150v) if we were driving separate motors - one per IGBT

Paul's neat idea is to separate them out using the resistance in the cables - so they have to play nice together

It sounds really neat

Paul - is this your idea? - or is it a known fix?

If it is your idea you should look at deleting all of these posts and getting a patent
  Reply With Quote
The Following 2 Users Say Thank You to duncan For This Useful Post:
MPaulHolmes (04-23-2014), thingstodo (04-26-2014)