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He Hucheng,Liu Botao,Wang Qin,Tan Fuchen,Gui Haoya,Zhang Chenyang 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.6
Induction motor (IM) is widely used in numerous industrial applications. However, achieving high-performance control of IM by using conventional control algorithms is diffi cult because of the mathematical model of high-order, strong coupling, and nonlinearity. Although fi nite control set model predictive current control (FCS-MPCC) has attracted considerable attention because of its simple structure, fast dynamic response, and excellent performance, its performance is degraded substantially if a mismatch exists between model parameters and actual machine parameters. To overcome these problems, active disturbance rejection controller based MPCC (ADRC-MPCC) was proposed for improving the dynamic property and robustness of IM in this paper. The model errors on the IM caused by the load torque and parameter changes were observed and compensated using the extended state observer and nonlinear state error feedback. Two outer loops, namely the ADRC speed loop controller and ADRC fl ux loop controller were designed to improve the rejection disturbance performance of IM speed control system. Furthermore, the calculation process of MPCC of the inner loop is also simplifi ed by ADRC-MPCC. The proposed control strategy was compared and verifi ed with PI control and FCS-MPCC by using MATLAB/Simulink. Simulation and experimental results confi rmed the robustness and dynamic performance of the proposed control strategy
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