CASCADE LADRC POWER OPTIMIZATION CONTROL TECHNOLOGY FOR DIRECT-DRIVE WAVE POWER SYSTEM

Zhang Bin; Duan Hannian

doi:10.19912/j.0254-0096.tynxb.2023-2005

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (4) : 645-653. DOI: 10.19912/j.0254-0096.tynxb.2023-2005

CASCADE LADRC POWER OPTIMIZATION CONTROL TECHNOLOGY FOR DIRECT-DRIVE WAVE POWER SYSTEM

Zhang Bin, Duan Hannian

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Abstract

By combining the equations of motion of the force of the float in the wave with the model of the permanent magnet synchronous linear motor, a double closed-loop linear active disturbance rejection control （LADRC） algorithm based on the reduced-order linear state observer （RLESO） is designed. Additionally, a sensorless speed sliding mode observer is designed to replace the traditional speed sensor using the voltage and current of the motor as the input. The simulation results demonstrate that the proposed speed observer can precisely estimate the actual speed, and the RLESO-based cascade LADRC control strategy demonstrates good tracking effect, anti-jamming capability and robustness. Moreover, the power output optimization effect is obvious.

Key words

wave power / wave energy conversion / maximum power point tracing / linear active disturbance rejection controller / reduced order linear extended state observer / speed sensorless

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Zhang Bin, Duan Hannian. CASCADE LADRC POWER OPTIMIZATION CONTROL TECHNOLOGY FOR DIRECT-DRIVE WAVE POWER SYSTEM[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 645-653 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2005

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