Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 36, Issue 9, Pages 10742-10752Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2021.3063226
Keywords
Predictive control; Current control; Delays; Mathematical model; Couplings; Stators; Resistance; Deadbeat predictive control (DBPC); permanent-magnet synchronous motor (PMSM); sensitivity; sliding-mode disturbance observer (SMDO)
Categories
Funding
- National Natural Science Foundation of China [51875261]
- Natural Science Foundation of Jiangsu Province of China [BK20180046]
- Qinglan Project of Jiangsu Province
- Postgraduate Research and the Practice Innovation Program of Jiangsu Province [SJCX19_0574]
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This article introduces an improved deadbeat predictive controller for permanent-magnet synchronous motor drive systems. By using a composite sliding-mode disturbance observer, it can eliminate the effects of parameter mismatch and achieve better performance compared to conventional control methods.
This article proposes an improved deadbeat predictive controller for permanent-magnet synchronous motor drive systems. It can eliminate the influence of the parameter mismatch of inductance, resistance, and flux linkage. First, the performance of the conventional predictive current method is investigated to analyze sensitivities of the electric parameters. Then, a composite sliding-mode disturbance observer (SMDO) based on the stator current and lumped disturbance is proposed, which can simultaneously estimate the future current value and lumped disturbance caused by the parameter mismatch of inductance, resistance, and flux linkage. Based on the discrete-time SMDO, currents are estimated and used to replace the sampled values to compensate one-step delay caused by the calculation and sampling delay. Both simulation and experimental performances of the proposed method have been validated and compared with the conventional control methods under different conditions. The comparison results show the superiority of the proposed predictive current control method based on the composite SMDO.
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