I have an inverter and Siemens 3ph induction motor model 1LA7060-4AB10
I want to measure or estimate the parameters of this motor such as :
Rotor resistance
Stator resistance
Rotor leakage inductance
Stator leakage inductance
Mutual inductance
Using the input voltage and the currents
Hi, You need to do open circuit (No load) and short circuit (Rotor mechanical locking) tests. But these tests require a variable AC voltage source, and besides the Voltmeter and Ammeter, you need to use a Watt-meter. In the no load test you apply the full voltage to the motor and leave it run freely while you take the readings. Whereas, in the rotor locking test, you need to lock the rotor mechanically, and can not apply the full voltage. After you lock the rotor, you need to set the voltage of the variable AC source to zero before you supply the motor. Having your meters already connected start increasing the voltage very carefully form zero up to reaching the maximum allowed current given in the name-plate. You will reach that amount of current at a very low value of the voltage, may be 6% of the rated voltage. But, be very careful as the motor will burn if you went more. the readings are voltage, current and power at no load and at locked rotor cases. Using AC circuit theory, the no load readings will give you the magnetization branch components, and the locked rotor test will give you the stator and rotor resistance and reactance.
Hope this helps,
Hi, You need to do open circuit (No load) and short circuit (Rotor mechanical locking) tests. But these tests require a variable AC voltage source, and besides the Voltmeter and Ammeter, you need to use a Watt-meter. In the no load test you apply the full voltage to the motor and leave it run freely while you take the readings. Whereas, in the rotor locking test, you need to lock the rotor mechanically, and can not apply the full voltage. After you lock the rotor, you need to set the voltage of the variable AC source to zero before you supply the motor. Having your meters already connected start increasing the voltage very carefully form zero up to reaching the maximum allowed current given in the name-plate. You will reach that amount of current at a very low value of the voltage, may be 6% of the rated voltage. But, be very careful as the motor will burn if you went more. the readings are voltage, current and power at no load and at locked rotor cases. Using AC circuit theory, the no load readings will give you the magnetization branch components, and the locked rotor test will give you the stator and rotor resistance and reactance.
Hope this helps,
Maybe you can find a help reading my paper:
S Bolognani, M Zigliotto: Essentials of IM Parameters Measurement for FOC Drives Tuning
you can find in RG
Hi Gad. I think the paper from MAYANK PRATAP SINGH titled "Parameter Estimation of Three Phase Induction Motor:An Innovative Approach” can also be your reference. Find it in the link.
http://shodh.inflibnet.ac.in:8080/jspui/bitstream/123456789/2197/1/synopsis.pdf
Refer to http://shodhganga.inflibnet.ac.in/bitstream/10603/87004/19/19_appendix_c.pdf
Refer to
Essentials of IM Parameters Measurement for FOC Drives Tuning
available in ResearchGate
This gives you best results... https://studylib.net/doc/14968856/determination-of-induction-motor-parameters-%E2%80%A2-dc-test
Hi all, all the papers above assume a linear behavior of the machine which is not true in general. The flux linkage is a nonlinear function of the currents (and the mechanical angle). Please have a look at our preprint: Preprint Generic machine identification and maximum efficiency operat...
for nonlinear machine flux linkage modeling including iron losses. All the best, Christoph.P.S. We should start teaching electrical machines without the use of secant inductances; since it is a over simplification and not true in general. We should use nonlinear flux linkages and differential inductances, The magnetic behavior of machines is simply nonlinear. Nothing less and nothing more.
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