关键词: 永磁磁阻直线电机, 模型预测电流控制, 双矢量, 电流脉动抑制

Abstract: Permanent magnet reluctance linear motor ( PMRLM ) , featuring dual excitation from both permanent magnets and current, offers advantages such as high thrust density, easy control, and simple and reliable structure. It is suitable for applications such as large-scale assembly and logistics sorting. However, under the traditional ProportionalIntegral ( PI ) control strategy, there exist relatively large phase current ripple and thrust ripple. Under conventional PI control,the phase current and thrust of PMRLM are prone to significant high-frequency fluctuations. To address this issue,
this paper adopts a dual-vector model predictive current control ( DV-MPCC) structure to reconfigure the current inner loop. In the Simulink software, simulation models based on conventional PI control, single-vector model predictive current control ( SV-MPCC) ,and the proposed DV-MPCC are respectively constructed,and the output current characteristics of the three controllers are systematically compared. Simulation results confirm that,compared with PI control and SV-MPCC,DVMPCC can effectively reduce the output current ripple and suppress thrust pulsation, thereby verifying its advantage in improving the operating performance of the PMRLM.

Key words: permanent magnet reluctance linear motor, model predictive current control, dual-vector, current ripple suppression