Optimization procedure for identifying constitutive properties of high speed induction motor

Identification of Lamination Stack Properties: Application to High-Speed Induction Motors

“…Experimental modal analyses were conducted on five MGV rotors denoted as Rotor#1 through Rotor#5 whose total lengths and weights are presented in Table I. Rotor#1 is the rotor presented in [15]. Length L fer and diameter D fer (Figs.…”

“…The lateral dynamic behavior of the stack is then identified by performing experimental modal analyses on several rotors of different sizes. The identification strategy presented in [15] consists in minimizing the difference between the measured and the predicted modal data provided by the FE model, by using the Levenberg-Marquardt algorithm [16], [17]. Identification results are discussed to evaluate a possible relation between the equivalent constitutive properties of the lamination stack and the magnetic core length and diameter.…”

Identification of constitutive properties of a laminated rotor at rest through a condensed modal functional

“…When more modes are accounted for, the mean global functional features a monotonous convergence to a nonzero constant which represents the mean difference between a couple of predicted and measured mode. It is important that this quantity stabilizes and it should be noted that in [30], the authors consider distributions of transversely isotropic material along the laminated core axis, which if used here, would certainly make the mean global functional tend toward zero.…”