volume | PIER Journals

Abstract

To address the problem of traditional speed loop controllers being unable to achieve rapid system convergence in the face of complex external operating conditions, this paper designs a new nonsingular fast terminal sliding mode control algorithm (NNFTSMC) for PMSM with a super twisting sliding mode perturbation observer (STSMO). Firstly, the mathematical models of PMSM for ideal case and parametric composite uptake are established. Secondly, a new non-singular fast terminal sliding mode control surface (NNFTSM) is proposed to design the PMSM speed-loop controller, which is also paired with the STSMO to observe the total system perturbation in real time and compensate the perturbation to the speed-loop NNFTSMC controller to form a new composite controller of NNFTSMC+STSMO. Finally, the proposed composite control algorithm of NNFTSMC+STSMO is verified to be effective in improving the control of the PMSM drive system during the parameters and load mutation by comparing simulation and RT-Lab semi-physical experiments.

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Dr. Jiaoyang Wang

Dr. Renjun Zhou

Mr. Junqin Liu