Induction motor parameter determination.
Induction motor parameter determination.
(OP)
Hi,
I need to measure all the parameters of an induction motor(squirral cage). While I found some standards on Nema and Ieee, they are not that straight forward. Any one gets links or documents that describes a "standard" proceedure to do the measurements? ( Rr, Rs, Lr, Ls, M ) .. thanks in advance..
BigLe
I need to measure all the parameters of an induction motor(squirral cage). While I found some standards on Nema and Ieee, they are not that straight forward. Any one gets links or documents that describes a "standard" proceedure to do the measurements? ( Rr, Rs, Lr, Ls, M ) .. thanks in advance..
BigLe





RE: Induction motor parameter determination.
RE: Induction motor parameter determination.
kimatek.com
RE: Induction motor parameter determination.
Find the voltage, (electrical, useful) power, slip, power factor, efficiency and the ratio of locked rotor current to nominal current of the motor.
Use the (well known :) equivalent circuit of the motor. Write equations for the power, power factor, efficiency and the ratio of the currents using the impedances of the equivalent circuit. Express the impedances of the equivalent circuit using the inductances and resistances of the windings. Solve the equations for the inductances and resistances. (Assume Lr’ = Ls, for example).
Not an easy task? See http://pp.kpnet.fi/ijl/prog.htm for some help.