At 20A id the battery current was 0,8A and 0,2A is the idle current so 0,5-0,6A extra current. My assumption is that this will increase linear wit id and then the extra current would be 1,1A at 370V so 400W, not 500W, but still a lot.Pete9008 wrote: ↑Wed Jan 11, 2023 3:12 pm I think the coggyness is just due to the motor saliency, id is about the only thing I can think of that might help. Is the 500W a measured number? It's a little higher than I would expect. What was the battery current during the 20A test?
I suppose the code could be modified so that the current isnt there there when stationary or above a few Hz, that should limit the power loss to the minimum.
The MGR has quite a lot of backlash in the reduction gears and combined with high coggynes due to saliency it's very likely to be the cause of what I experience. This is not a high priority matter so probably better to focus on motor parameters and fw tuning to see if any improvments can be done there.
I have this graph that I think is representative for my motor, that indicates that what I get in my car is resonable considering the voltage in my batteries vs the voltage Lexus runs on the motor bus (don't know but 600V is my best guess). Specifically the drop-off in power in FW region.