teslanv
1 MW
Here's a question I am curious about.
I understand that motor heat is directly related to how much resistance the phase wires have. And the lower the phase resistance, the more current a motor can handle.
So I am wondering if you were to compare two motors of similar design, but different stator widths, and different windings, but with the exact same phase resistance, if they could handle the same amount of phase current.
Case in point:
The MXUS "3000W" (45mm Stator) 21X3T winding has a phase resistance of ~0.070 Ohms. (Kv = ~12)
The MXUS "1000W" (28mm Stator) 16X4T winding has a phase resistance of ~0.070 Ohms. (Kv = ~15)
The narrower motor will have less torque and a faster unloaded speed as compared to the wider 45mm motor, but will both motors be able to handle the same amount of phase current. Say 200A?
Are there other factors that contribute to heating (i.e. eddy current losses) which would cause the narrower motor to heat more quickly than the wide motor?
I understand that motor heat is directly related to how much resistance the phase wires have. And the lower the phase resistance, the more current a motor can handle.
So I am wondering if you were to compare two motors of similar design, but different stator widths, and different windings, but with the exact same phase resistance, if they could handle the same amount of phase current.
Case in point:
The MXUS "3000W" (45mm Stator) 21X3T winding has a phase resistance of ~0.070 Ohms. (Kv = ~12)
The MXUS "1000W" (28mm Stator) 16X4T winding has a phase resistance of ~0.070 Ohms. (Kv = ~15)
The narrower motor will have less torque and a faster unloaded speed as compared to the wider 45mm motor, but will both motors be able to handle the same amount of phase current. Say 200A?
Are there other factors that contribute to heating (i.e. eddy current losses) which would cause the narrower motor to heat more quickly than the wide motor?
