I take advantage of this thread to look for the perfect controller for my next ebike (Mac Motor 8T, 14s 30A 18650 battery).
My first ebike has a phaserunner controller which works perfectly with the same motor, but I would like to get something a bit more punchy when starting (96 phase Amp limit).
One of the main characteristic to look for is the erpm limitation because mac motor has 16pole pairs and a 5:1 gear ratio.
Because the motor can reach 50kmh at 14S, a controller able to do 40000/50000 erpm minimum is required.
I focused my research on FOC controllers and here are candidates I found so far:
BAC2000
pros: Tested up to 90000erpm (Justin), 150A peak phase current (50-75A continuous), 100A max battery current, up to 90V (72v nominal), support from Grin tech, RS-232 PC connection
cons: Price (375$+shipping), no cruise control possible (checked in backdoor) ?, missing detailed manual (available from ASI ?)
Sabvoton SSC 72150
pros: Price (250$), 350A peak phase current (100-180A continuous), 150A max battery current, up to 90V (72v nominal), USB PC connection
cons: unreachable support (Kathy ?), unknown erpm limit (30000 ? [edit] 30000 confirmed [edit])
Mobipus 72200 (not available anymore)
pros: 450A peak phase current (continuous limited by thermal rollback), 200A max battery current, up to 88.8V (72v nominal)
cons: Price (460$+shipping), unknown erpm limit, RS-485 PC connection
VESC 4.12
pros: Price (100-200$), open source, 240A peak phase current (30-50A continuous), ???A max battery current, super small, 100k erpm limit
cons: 60V limit (recommended for 12s max), reported failures, cooling is critical (?), reachable phase amp in real life (?)
Kelly KLS7215 (and other sinus ones)
pros: Price (230$+shipping), High speed versions available (72000erpm and 100k erpm), 150A peak PHASE current (60A continuous), ???A max battery current
cons: Bulky, problems reported with this motor, no field weakening available (real FOC ?), simulated torque throttle ?
APT 96600 & Sevcon
Super overkill for my build...
I also looked at others like Powervelocity and Yuyuang but
no FOC is not an option for this bike.
Have you heard feedback about "Lishui" (Nanjing) or "pear control" controllers ?
I tried sending emails to kathy and filled Sabvoton website form in order to get information about this erpm limit but I never had an answer from them. If 50k is doable, I would definitely buy the Sabvoton SSC 72150.
I would be afraid to fry a Vesc with my 14s configuration (57.4v @ 4.1V/cell), however no regen planned with this motor (ie no overvoltage peaks ?). Do you think this is doable ?
The ideal candidate seem to be the ASI BAC2000 so far, but I have to admit I don't like how they hide documentation until you are a customer on their website. And it is quite pricey too...
If I cannot find anything better than the phaserunner I might come back to it and accomodate with the "soft start" 96A phase limit.
What would you do ?