@ARTICLE{Jedryczka_Cezary_Infinite-time_2024,
 author={Jedryczka, Cezary and Stepien, Sławomir and Demenko, Andrzej and Nowakowski, Mirosław},
 volume={vol. 73},
 number={No 4},
 pages={927-939},
 journal={Archives of Electrical Engineering},
 howpublished={online},
 year={2024},
 publisher={Polish Academy of Sciences},
 abstract={This paper presents modelling of a squirrel-cage induction motor and an optimal control method based on suboptimal control for nonlinear systems to minimise consumed energy and power losses in an induction motor drive. A coupled motor model with optimal control as a closed-loop integrated system is proposed. For modelling of the squirrel-cage asynchronous machine, a field-circuit-mechanical finite-element (FE) model is employed, in which mechanical motion is realised by a moving-mesh method and fixed mesh approach. For the control problem purpose, a surrogate induction motor model, described in a stationary rotor reference d–q frame, is applied. The optimal control is realised by a nonlinear feedback compensator method based on the state-dependent Riccati equation (SDRE) with an infinite time horizon with the surrogate model state-dependent parametrisation (SDP). To perform the control strategy, a SDRE technique with Moore–Penrose pseudoinverse is adopted. To improve the accuracy of the optimisation procedure, a finite element model was used to calculate the motor performance.},
 title={Infinite-time optimal feedback control of a 3-phase asynchronous motor exploiting a nonlinear finite element model},
 type={Article},
 URL={http://journals.pan.pl/Content/133382/PDF/05_2k.pdf},
 doi={10.24425/aee.2024.152103},
 keywords={finite element method, optimal control theory, state-dependent Riccati equations},
}