Decoupled Current Control Using Adaptive Quasi Resonant-Based ESO for Novel Matrix-Torque-Component Machines

This article proposes a current loop decoupling control method tailored for a novel matrix-torque-component machine (MTCM). The proposed decoupling controller is based on an adaptive quasi resonant extended state observer (AQRESO). A distinctive feature of the MTCM is its arrangement of windings and permanent magnets on both the stator and rotor. The coupling term in the MTCM current loop originates from two primary sources: one being the dc disturbance, which is proportional to the stator-rotor mutual inductance, and the other being the ac disturbance, caused by current harmonics due to nonlinear factors. The proposed AQRESO integrates a quasi-resonant controller in parallel with the traditional linear extended state observer (LESO), enabling the observation and compensation of both ac and dc disturbances. Meanwhile, the ESO gain is adaptively regulated according to the current error to avoid the decrease in noise suppression ability caused by excessive gain. The stability and harmonic suppression performance of the proposed controller have been rigorously analyzed. Finally, the effectiveness of the proposed method is validated experimentally on an MTCM prototype.