Thanks, will confirm it's 220v.
Should the AUC3 converter show up in the cgminer status regardless of whether a connected miner has enough power? Or are you saying it's a power issue for the converter that's causing it to not show up in the cgminer status?
Edit: tried two other PSUs and I have just updated the OP to include that
Were the other PSUs also Canaan sorcerers?
How are you powering the Pi?
I'm thinking the power issue is the miner not starting. I've never had the AUC itself show up (without the miner), but I only have 5 of these so not a huge amount of testing with it.