Hi,
I know, it is discussed before, but how do you think, how much difference is between AC 3 phase induction motor and DC series motor efficiency?
Example DC series motors: Kostov K9'' 144V / Netgain Impulse9 144V
Example AC motors: Siemens 1PV5135-4WS28 / ABB 3GAA 131 316
These motors have different power ratings, but main question is about efficiency (enery loss).
I've heard that generally DC motors have ~60-70% efficiency, while AC motors have ~85-95%.
But I have doubt about that because:
* DC motor brushes have no such big friction, to give 20% difference?!
* both motors have strator fields, that use electricity.
* assuming that I would use same voltage for AC or DC (~144V).
I know, it is discussed before, but how do you think, how much difference is between AC 3 phase induction motor and DC series motor efficiency?
Example DC series motors: Kostov K9'' 144V / Netgain Impulse9 144V
Example AC motors: Siemens 1PV5135-4WS28 / ABB 3GAA 131 316
These motors have different power ratings, but main question is about efficiency (enery loss).
I've heard that generally DC motors have ~60-70% efficiency, while AC motors have ~85-95%.
But I have doubt about that because:
* DC motor brushes have no such big friction, to give 20% difference?!
* both motors have strator fields, that use electricity.
* assuming that I would use same voltage for AC or DC (~144V).