Delay Compensation Based on Current Deviation in FCS-MPCC for Reduced THD and Torque Ripple in Surface-Mounted PMSM Drives
Received: 19 January 2026 | Revised: 5 March 2026 | Accepted: 15 March 2026 | Online: 4 April 2026
Corresponding author: Thanh Quy Bach
Abstract
This paper proposes a delay-aware Finite Control Set Model Predictive Current Control (FCS-MPCC) for surface-mounted Permanent Magnet Synchronous Motor (PMSM) drives. The computation and actuation latency cause the measured current used for prediction to deviate from the actual regulated current at the switching moment, thereby impairing voltage-vector selection and elevating harmonics. To resolve this issue, the delay time is assessed, and the current deviation is reconstructed using the discrete PMSM model. The reconstructed current is then utilized as the initial state for prediction in each sampling interval. Comparative simulations of a 1.5 kW two-level inverter-fed PMSM drive demonstrate that the proposed method decreases stator-current THD from 14.2% (SS-MPCC) and 9.9% (DS-MPCC) to 7.3%. It also reduces torque ripple from 6.5 Nm and 4.4 Nm to 2.4 Nm, respectively, while enhancing transient and speed-reversal performance.
Keywords:
model predictive current control, permanent magnet synchronous motor, compensation, time delay, torque rippleDownloads
References
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Copyright (c) 2026 Thanh Quy Bach, Nhi Van Thi Kieu, Dai Le Van
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