Help to measure doubly fed induction machine PARAMETERS
Help to measure doubly fed induction machine PARAMETERS
(OP)
Can any one show me a solution to measure the AC 3~ Doubly Fed Induction Motor Parameter like Rs,Rr,Ls,Lr... Offline&Online? I supposed that we have the Information of the Motor from the LABEL
Ulst=180V ; 7,5KW; delta /star ; 50Hz; cos_phi; 1/min; Rot_A
16,3/9,4 (A) 0,82 1425 27
LF 180B
Thank you all
Ulst=180V ; 7,5KW; delta /star ; 50Hz; cos_phi; 1/min; Rot_A
16,3/9,4 (A) 0,82 1425 27
LF 180B
Thank you all





RE: Help to measure doubly fed induction machine PARAMETERS
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RE: Help to measure doubly fed induction machine PARAMETERS
M. G. Say "Alternating Current Machines," John Wiley & Sons, 1978,
Section "Approximate Equivalent Circuit" on page 263
"Some useful approximations can be made for normal operating conditions with small positive or negative slip, and for no-load and short circuit conditions."
RE: Help to measure doubly fed induction machine PARAMETERS
I just explain a litte more about this work. I am working on a DFIM, controlled by an back to back inverter. The control scheme is done by an controller, monitored from a computer. The main task of this work is to investigate the behaviour of system in case of grid fault.
Before that, a simulation should be done to have a first see of what would happen. That is why I need the Motor Parameters. Just tell me how to measure them !!!
Thanks alot
RE: Help to measure doubly fed induction machine PARAMETERS
btw, how badly do you think the system willl get affected by this small motor ?
RE: Help to measure doubly fed induction machine PARAMETERS
See IEEE STD 112. 6.7 Method F or F1: Equivalent Circuit. 6.7.1.1 No load test, 6.7.1.2 Impedance Test, 6.7.1.2.1 Locked Rotor Test, 6.7.1.2.2 Impedance from Reduced-Voltage, reduced -Load Running test, etc.