Locked Rotor Current Circuit
Locked Rotor Current Circuit
(OP)
Is there any method to calculate the locked rotor current of a motor given the T-model circuit parameters?
This is an old motor and the parameters are available, but the performance data is not. I am simply trying to understand the impact of an across the line start.
Thanks,
This is an old motor and the parameters are available, but the performance data is not. I am simply trying to understand the impact of an across the line start.
Thanks,





RE: Locked Rotor Current Circuit
==== Z1 ====Z2(s)==
| |
Zm |
Where
Z1 = R1+jX1
Z2(s) = R2/s + jX2
Zm = jXm
If that is a T model, then computing LRC is a very simple excercize in circuit analysis.
For locked rotor conditions s=1
Ztotal(s=1)= Z1 + (Z2(1)* Zm)/(Z2(1)+Zm)
ILRC = Vterminal/Ztotal(s=1)
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RE: Locked Rotor Current Circuit
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