Title :
Direct torque control of induction machine using finite-time control and disturbance compensation
Author :
Sun Zhenxing ; Li Shihua ; Zhang Xinghua
Author_Institution :
Key Lab. of Meas. & Control of CSE, Southeast Univ., Nanjing, China
Abstract :
Considering the existence of disturbance in the induction machine (IM) drive system, this paper develops a composite control scheme based on linear extended state observer (LESO) and continuous finite time control (FTC) to improve the disturbance rejection property of system. First, a LESO is introduced to estimate the disturbances of system. The estimated value is used in the feed-forward compensation design. Second, a continuous finite-time feedback control technique is applied in the feedback design. Then the stability of the controller is analyzed. Simulation and experimental comparisons with two other control methods, traditional Proportional Integral (PI) and Proportional feedback plus feedforward compensation based on LESO(P+LESO), are provided to verify the effectiveness of the proposed method.
Keywords :
feedforward; induction motor drives; machine control; observers; stability; state feedback; torque control; FTC; IM drive system; P+LESO; PI control method; composite control scheme; continuous finite-time feedback control technique; controller stability analysis; direct torque control; disturbance compensation; disturbance rejection property; feedforward compensation design; induction machine; linear extended state observer; proportional feedback plus feedforward compensation based LESO; proportional integral control method; Induction machines; Mathematical model; Rotors; Stators; Torque; Torque control; direct torque control (DTC); disturbance compensation; disturbance rejection; extended state observer (ESO); finite-time control; induction machine (IM);
Conference_Titel :
Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE
DOI :
10.1109/IECON.2014.7048551
