Electromagnetic semi-analytical module for squirrel cage induction machines (EM2.SCIM)

Description

Calculates the airgap rotor and stator radial and tangential flux density time and space distribution based on subdomain model. Includes and fractional slot windings. Limited to polar geometries with semi opened slots.

Application to e-NVH

Subdomain models have the advantage of being extremely fast compared to purely numerical techniques, although they generally assume infinite permeability of the iron. In induction machines, they can be use to quickly sweep different rotor slot numbers to find the best slot combination in terms of torque ripple, average torque and electromagnetic noise.

Validations

A high number of validations can be found comparing subdomain and FEMM models, see for instance:

Post processings

All post processing of electromagnetic models are available such as

Additional post processing of subdomain model include

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