Dynamic Operation Loss Minimization for Permanent Magnet Synchronous Generator Based on Improved Model Predictive Direct Torque Control

Electronics

Fengqin Lin¹  Qing Li¹  Lei Miao¹  Wenwei Sun¹  Yuan Jiang¹ 

[1] School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China;

关键词: PMSG;    model predictive control;    without weight coefficient;    efficiency optimization;   

DOI  :  10.3390/electronics11091406

来源: DOAJ

【 摘 要 】

During permanent magnet synchronous generator (PMSG) operation, aside from improving the rapid response of torque and reducing the rippling of torque and flux to guarantee the operational reliability, the loss of the PMSG itself cannot be ignored either. Aiming at this problem, an improved model predictive direct torque control (MPDTC) method is proposed, which suppresses the torque ripple and achieves PMSG efficiency optimization. Firstly, based on the conventional MPDTC and the loss model of PMSG, the predicted stator active current is determined, which is utilized for obtaining the predicted torque. Secondly, combined with the generator loss model, the set value of the stator energetic current is obtained; combined with the wind power system maximum power point tracking method, the set value of generator torque is obtained. Thirdly, by converting the torque control error and current control error into a per unit value, the influence of the weight coefficient in the cost function on the control effect is reduced. Finally, the key results verified the effectiveness and superiority of the proposed control scheme by simulation and experiment.

【 授权许可】

Unknown