Improved Model Predictive Flux-linkage Control of Permanent Magnet Synchronous Motor Based on Fast Vector Selection

摘要

The conventional model predictive control (MPC) of permanent magnet synchronous motor (PMSM) always has a complicated computational burden and large current or torque ripples, which result in deteriorated control performance and difficult to achieve practical operating conditions. To address those issues, this digest proposes an improved model predictive flux-linkage control (MPFC) strategy for PMSM without weight coefficients. The proposed scheme retains excellent control performance of MPC with simple calculation. Firstly, according to the mathematical model of PMSM, the prediction model of flux- linkage established. The relationship between flux linkage and selected voltage vector is analyzed and a new sector division solution is discussed. Then, the design and implementation of the improved MPFC scheme is presented. Finally, a comprehensive simulation test has been conducted to verify the effectiveness of the proposed scheme.