scianiac
1 kW
- Joined
- Oct 24, 2018
- Messages
- 499
So I bought a cheap tesla meter on aliexpress to check if I had damaged the magnets in my leaf when I cooked the coils due to a controller blowing it's FETs short and after I checked those out (they were fine) I was thinking of other uses. Since I was recently looking at this thread on the saturation of motors and thinking that is probably what was causing some tuning issues on that Leaf motor and planning to test the saturation compensation settings next time something occurred to me.
What if I place the tesla meter probe against the stator and set it to peak function and then pulse a short burst of high current through the winding and record the results at various currents to find out how the stator saturates. Now I think this won't be exactly accurate to how the motor will react since there is a whole magnetic circuit at play and the real motor output will be affected by things like the strength of the magnets, airgap, back iron, flux linkage (I'm just listing things, I don't have much idea how all of these things actually affect things). If it's even remotely accurate it sounds a lot easier and safer than the way Justin did it, less risk of burning a coil. I even have a spare stator with at least one intact winding I think, the question is how to drive the current. I'm thinking just trying to set the voltages and then read the current with a meter instead of trying to control the current.
So does anybody with a better understanding of motor theory have any thoughts on this idea?
What if I place the tesla meter probe against the stator and set it to peak function and then pulse a short burst of high current through the winding and record the results at various currents to find out how the stator saturates. Now I think this won't be exactly accurate to how the motor will react since there is a whole magnetic circuit at play and the real motor output will be affected by things like the strength of the magnets, airgap, back iron, flux linkage (I'm just listing things, I don't have much idea how all of these things actually affect things). If it's even remotely accurate it sounds a lot easier and safer than the way Justin did it, less risk of burning a coil. I even have a spare stator with at least one intact winding I think, the question is how to drive the current. I'm thinking just trying to set the voltages and then read the current with a meter instead of trying to control the current.
So does anybody with a better understanding of motor theory have any thoughts on this idea?