Low current ripple parameter-free predictive current control of three-level inverter-fed PMSMs with current variations correction

• Published in: JOURNAL OF POWER ELECTRONICS Vol. 25; no. 8; pp. 1526 - 1538
• Main Authors: Wang, Zinuo, Yu, Feng, Zhang, Jin, Qin, Xiaopeng
• Format: Journal Article
• Language: English
• Published: 전력전자학회 01.08.2025
• Subjects: 전기공학
• ISSN: 1598-2092; 2093-4718
• DOI: 10.1007/s43236-024-00984-1

An enhanced parameter-free predictive current control is proposed to address the shortcomings of conventional predictive current control, including weak parameter robustness and significant current ripple. It is implemented within a three-level inverter for driving permanent magnet synchronous motor (PMSM) systems. Initially, by virtue of a full-current-variation update technique, the future current can be predicted to facilitate the first applied vector, mitigating the impact of parameter mismatch. Subsequently, a current variations correction technique is employed to refine the predictive accuracy of future current, and the optimal duration is decided via the dead-beat principle. Furthermore, the second active vector is selected by an improved cost function, which incorporates considerations such as the pre-selection of voltage vectors and the neutralpoint voltage constraint. Finally, experimental results have demonstrated the superiority of the proposed strategy in current ripple suppression along with its strong robustness against parameter mismatch. KCI Citation Count: 0