When in phasor mode, the Asynchronous Machine is modeled using positive- and
negative-sequence equations. The positive-sequence model contains
differential equations in both the rotor and stator of the machine.
You may look under the mask of the POWERGUI block (by right clicking and selecting 'Look Under Mask' option) after executing the SimPowerSystems model in phasor mode to observe the exact representation. In general, you can also look under the mask of the Asynchronous Machine model to see its implementation.
SimPowerSystems also offers an utility called POWER_ANALYZE function that computes the equivalent state-space representation of the specified electrical model built with SimPowerSystems library. For more information regarding this function, please see the following URL:
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