Feedback Linearization and Maximum Torque per Ampere Control Methods of Cup Rotor Permanent-Magnet Doubly Fed Machine

This paper establishes the state-space model of the cup rotor permanent-magnet doubly fed machine in the synchronous reference frame. The feedback-linearization control method is used to realize the decoupling control of flux and torque. Then, the upper and lower load torque boundaries are solved. Furthermore, to minimize the stator current magnitude of the control machine under a certain torque, the maximum torque per ampere (MTPA) control is derived. Finally, simulation results demonstrate the good decoupling performance of the feedback-linearization control method and the correctness of the load torque boundaries. In addition, the effectiveness and robustness of the proposed control methods are also demonstrated.

Automated summary

This paper proposes a feedback-linearization control method for the cup rotor permanent-magnet doubly fed machine, which successfully achieves the decoupling control of flux and torque and solves the load torque boundaries. The maximum torque per ampere (MTPA) control is introduced to minimize the stator current magnitude under a certain torque. Simulation results demonstrate the good performance of the feedback-linearization control method, verify the correctness of the load torque boundaries, and show the effectiveness and robustness of the proposed control methods.