Research on high-speed motor control strategy of current source inverter based on LADRC

In this paper, a CSI-HSPMSM control strategy combining the current regulator of LADRC and the positionless algorithm of the sliding mode observer is proposed, which is conducive to optimizing the control performance of the current source inverter and reducing the system cost. In this control strategy, the position and speed of HSPMSM are estimated by the positionless algorithm of the sliding mode observer according to the voltage and current of the motor stator, and the dynamic performance of the motor current is optimized by designing the current regulator of the LADRC. Not only does it eliminate expensive and unreliable rotor position sensors, but it also optimizes the dynamic performance of the system and reduces the current harmonics of the motor. Finally, the control system is established in the simulation, and the control strategy is simulated by using the actual parameters to verify the effectiveness of the proposed control strategy.