کنفرانس مهندسی برق ایران

صفحه اصلی / سی و چهارمین کنفرانس بین المللی مهندسی برق

Optimized Harmonic Injection for Torque Ripple Reduction In Reduced-DC link Capacitance PMSM

نویسندگان :

Maryam Sabbaghpour arani¹ Abolfazl Halvaei Niasar²

1- کاشان 2- دانشگاه کاشان

کلمات کلیدی :

Permanent Magnet Synchronous Motor (PMSM)،Torque Ripple Reduction،Harmonic Current Injection،Adaptive Control

چکیده :

Reduced-capacitance PMSM (RC-PMSM) drives suffer from pronounced DC-link voltage oscillations that propagate into low-order stator current harmonics, significantly increasing electromagnetic torque ripple and copper losses. This paper presents a comprehensive control framework that integrates analytical harmonic injections, adaptive harmonic injection using SQP optimization to suppress torque oscillations under severe DC-link ripple conditions. A detailed harmonic torque model is developed to characterize the interaction between DC-link voltage distortion and dq-axis current harmonics. The optimal injection amplitudes are derived analytically and adaptively, ensuring a balanced trade-off between torque-ripple minimization. Simulation results at various load levels (100%, 70%, and 50% of rated torque) demonstrate that the adaptive method achieves the most significant torque-ripple suppression—up to 45% at rated conditions—while maintaining the lowest standard deviation and exhibiting strong robustness against parameter variations. The proposed methods provide scalable, high-performance solutions for compact PMSM drives requiring reduced DC-link energy storage.