Closed-Loop Control of Permanent Magnet Synchronous Motors

This article discusses the closed-loop control implementation for Permanent Magnet Synchronous Motors (PMSM). To achieve this objective, we have developed a custom PMSM model that provides deeper insights into the motor's operational principles. The model implementation includes core mathematical representations of motor dynamics using d-q transformation equations. We have referenced examples from Yuan Dengke's authoritative textbook, which offer comprehensive understanding of PMSM control methodologies. For motor control implementation, we employed current hysteresis vector control technology - a technique that utilizes hysteresis band comparison algorithms for precise current regulation. This control strategy involves real-time current error calculation and switch signal generation through Space Vector PWM (SVPWM) implementation, ensuring accurate motor operation and enhanced system efficiency. The application of these control techniques enables optimal PMSM performance across various operating conditions, maintaining high efficiency and stability while delivering significant value for industrial applications. The code structure typically includes modules for Clark/Park transformations, hysteresis current controllers, and inverse Park/Clark transformations for voltage vector generation.