A Modulated Model Predictive Current Controller for Interior Permanent-Magnet Synchronous Motors

Crestian Almazan Agustin, Jen-te Yu, Cheng-Kai Lin and Xiang-Yong Fu
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Crestian Almazan Agustin: Department of Electrical Engineering, National Taiwan Ocean University, Keelung City 202, Taiwan
Jen-te Yu: Department of Electrical Engineering, Chung Yuan Christian University, Taoyuan City 32023, Taiwan
Cheng-Kai Lin: Department of Electrical Engineering, National Taiwan Ocean University, Keelung City 202, Taiwan
Xiang-Yong Fu: Department of Electrical Engineering, National Taiwan Ocean University, Keelung City 202, Taiwan

Energies, 2019, vol. 12, issue 15, 1-20

Abstract: Model predictive current controllers (MPCCs) are widely applied in motor drive control and operations. To date, however, the presence of large current errors in conventional predictive current control remains a significant predicament, due to harmonic distortions and current ripples. Naturally, noticeable current estimation inaccuracies lead to poor performance. To improve the above situation, a modulated model predictive current controller (MMPCC) is proposed for interior permanent-magnet synchronous motors (IPMSMs) in this paper. Two successive voltage vectors will be applied in a sampling period to greatly boost the number of candidate switching modes from seven to thirteen. A cost function, which is defined as the quadratic sum of current prediction errors, is employed to find an optimal switching mode and an optimized duty ratio to be applied in the next sampling period, such that the cost value is minimal. The effectiveness of the proposed method is verified through eight experiments using a TMS320F28379D microcontroller, and performance comparisons are made against an existing MPCC. In terms of quantitative improvements made to the MPCC, the proposed MMPCC reduces its current ripple and total harmonic distortion (THD) by, on average, 27.17% and 21.84%, respectively.

Keywords: interior permanent-magnet synchronous motor; modulated model predictive current control; dual-core microcontroller; modulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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