Hybrid LADRC and NADRC Control Design for Enhanced Performance of YASA‐AFFSPM Motors

This paper presents a novel control approach for the yokeless axial‐field flux‐switching permanent magnet (YASA‐AFFSPM) motor, which holds significant promise for manufacturing and electric vehicle (EV) applications. Addressing the challenges of achieving high‐performance control, we establish mathematical models based on the rotor rotating coordinate system and analyze the motor’s working principle. An active disturbance rejection controller (ADRC), recognized for its simplicity and robustness, is utilized to manage both internal and external disturbances without a strong dependence on precise mathematical models. A vector control strategy is implemented, incorporating linear ADRC (LADRC) for speed control and nonlinear ADRC (NADRC) for current regulation. The proposed ADRC reduces torque ripple to ±1.5 Nm (60% improvement vs. PI control) and achieves 6 ms settling time with zero overshoot during no‐load starts. Experimental validation demonstrates superior dynamic performance: under sudden load changes (0–6 Nm), the system maintains stability with minimal fluctuations (±0.57 Nm torque, ±0.42 A q‐axis current), while speed transitions (120–200 rpm) show 40% faster response than conventional PI control. The control architecture’s model‐agnostic approach enables robust operation without requiring precise motor parameters, making it particularly suitable for EV and industrial applications where both precision and reliability are critical.