Simulation of Field-Weakening Speed Regulation System for Permanent Magnet Synchronous Motors

This paper focuses on the simulation of a field-weakening speed regulation system for permanent magnet synchronous motors (PMSM). The system builds upon traditional vector control methodology but incorporates significant improvements through the integration of field-weakening speed regulation technology. Field-weakening control represents a specialized speed regulation technique particularly suitable for PMSMs, offering distinct advantages including enhanced system efficiency, reduced operational costs, and minimized acoustic noise and electromagnetic interference. The implementation typically involves modifying the d-axis current reference through algorithmic calculations that extend the motor's speed range beyond the base speed. Key functions would include flux-weakening controllers that dynamically adjust current references based on speed and voltage constraints, often implemented using PI regulators or advanced control algorithms like model predictive control. Through detailed simulation studies and experimental validation presented in this research, we demonstrate the practical effectiveness of this technology. The findings provide valuable references for researchers in related fields while contributing to the technical advancement of PMSM drive systems. The simulation model includes comprehensive implementations of current controllers, coordinate transformations, and field-weakening algorithms that can be adapted for various PMSM applications.