General

I assume you want to model a two-phase 4/2 SRM. We do not have a two-phase SRM block in Simscape Electrical but this can be obtained by connecting the four-phase SRM in a certain way (please see below the required steps).

1.a) If you're using release R2018b the SRM block you should use is called Four-Phase Switched Reluctance Machine. 1.b) If you're using release R2019a the block is called Switched Reluctance Machine (Multi-Phase). Keep the 'Number of stator phases' to 'Four-phase' which is the default. 2) Set 'Number of rotor poles' to 2 and specify all relevant parameters corresponding to your machine. This block allows you to specify either parametric or tabulated data. 3) Connect terminals b1, d1, b2 and d2 to an Electrical Reference block. 4) Control the machine using terminals a1 and a2 for first phase, c1 and c2 for second phase. In this way the machine would behave like a two-phase 4/2 SRM machine.

I hope this helps.

Please take a look at the SRM model in Simscape Electrical. You can specify the number of rotors and the geometry of the stator.