**Appendix**

Three-phase induction motor variables and parameters: *PN* = 2.3*kW*;*VN* = 220 *V*; *Poles* = 4 *R*<sup>1</sup> = 2.229 Ω; *R*<sup>2</sup> = 1.522 Ω; *Lm* = 0.238485 *H*; *L*<sup>1</sup> = 0.2470 *H*; *L*<sup>2</sup> = 0.2497 *H*; *J* = 0.0067 *Kgm*2.
