基于自适应线性神经元增强ADRC的双三相PMSM谐波电流抑制方法：一种优化策略

Dual three-phase permanent magnet synchronous motors (DTP-PMSMs) are susceptible to both non-periodic and periodic harmonic disturbances due to factors such as non-sinusoidal back electromotive force (EMF), inverter nonlinearity, and winding asymmetry, which degrade system performance. To address the insufficient suppression of periodic harmonics in traditional active disturbance rejection control (ADRC), this paper proposes an adaptive linear neuron-augmented ADRC (ALNA-ADRC) strategy. By embedding an adaptive linear neuron (ALN) into the ADRC framework, the proposed method precisely suppresses periodic harmonics, such as the 5th and 7th harmonics, in the harmonic plane while maintaining ADRC’s robustness against non-periodic disturbances. Furthermore, by decoupling the observer bandwidth from the control law gain, the parameter tuning process of ADRC is simplified. Experimental results demonstrate that the proposed method significantly reduces the total harmonic distortion (THD) of the current, achieving a minimum THD of 6.55% under steady-state conditions. Additionally, it exhibits superior harmonic suppression capability and stability under complex operating conditions, including parameter mismatch, variable speed, and sudden load changes.