Title :
Super-twisting sliding mode observer based speed sensorless torque control for PMSG used in wind turbines
Author :
Leilei Guo ; Xing Zhang ; Shuying Yang ; Zhen Xie ; Lifeng Qi ; Lingxiang Wang
Author_Institution :
Sch. of Electr. Eng. & Autom., Hefei Univ. of Technol., Hefei, China
Abstract :
A speed sensorless torque control method for permanent magnet synchronous generator (PMSG) based on super-twisting sliding mode observer (STSMO) is proposed in this paper. Active back electromotive force (BEMF) can be obtained based on the STSMO. With the observed active BEMF, the rotor position angle and the speed are estimated by a phase-locked loop. Besides, a stator flux and electromagnetic torque (EMT) observation method is proposed based on the observed active BEMF. Compared to the traditional method, the robustness of the proposed one to the parameters of PMSG is improved. Then a speed sensorless EMT closed-loop control system is established. The simulation and experimental results verify the effectiveness of the proposed algorithm.
Keywords :
angular velocity control; closed loop systems; observers; permanent magnet generators; rotors; sensorless machine control; stators; synchronous generators; torque control; variable structure systems; wind turbines; BEMF; EMT observation method; PMSG; STSMO; back electromotive force; closed-loop control system; electromagnetic torque; permanent magnet synchronous generator; phase-locked loop; rotor position angle; rotor speed; speed sensorless torque control; stator flux; super-twisting sliding mode observer; wind turbines; Algorithm design and analysis; Estimation error; Observers; Robustness; Rotors; Stators; Torque; permanent magnet synchronous generator; robustness; speed sensorless; stator flux and electromagnetic torque observation; super-twisting sliding mode observer;
Conference_Titel :
Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference on
Conference_Location :
Seoul
DOI :
10.1109/ICPE.2015.7168117
