Decentralized Current Control for an Open-Winding Synchronous Machine with Local Estimation of the Electromotive Force

This article proposes a decentralized current control law for open winding multiphase permanent magnet synchronous machines. An active disturbance rejection control scheme based on an extended state observer is proposed. The proposed observer enhances the current control performance of the flatness-based control already proposed in the literature, mainly caused by the inverse model limitation. This new decentralized control structure was evaluated in a wide range of operating points and compared to the flatness-based control law in simulation to validate its robustness.