Permanent Magnet Synchronous Motor Vector Control Model Based on SVPWM

This vector control model for permanent magnet synchronous motors employs Space Vector Pulse Width Modulation (SVPWM) to maintain constant torque operation below 2000 RPM and constant power operation between 2000-4000 RPM. The control system utilizes advanced vector control algorithms to achieve precise torque and power regulation by manipulating motor currents and voltages. Key implementation aspects include dq-axis current decoupling control, Clarke and Park transformations for coordinate system conversion, and SVPWM signal generation through sector identification and timing calculations. This control strategy finds extensive applications in fields requiring precise motor performance characteristics, including industrial automation, electric vehicles, and wind power generation systems. The control algorithm typically involves implementing current controllers (usually PI controllers) for both d-axis and q-axis currents, with the q-axis current reference determining torque output and the d-axis current reference enabling field weakening for constant power operation above base speed. The SVPWM module generates optimized PWM signals by calculating appropriate voltage vector switching times based on the reference voltage vector's magnitude and position in the alpha-beta coordinate system.