POWER OPTIMIZATION OF DIRECT-DRIVE WAVE POWER GENERATION SYSTEMS BASED ON SUPER-TWISTING SLIDING MODE

Huang Yi; Yang Junhua; Wang Chaofan; Liang Haohui; Luo Qi

doi:10.19912/j.0254-0096.tynxb.2022-0826

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 374-380. DOI: 10.19912/j.0254-0096.tynxb.2022-0826

POWER OPTIMIZATION OF DIRECT-DRIVE WAVE POWER GENERATION SYSTEMS BASED ON SUPER-TWISTING SLIDING MODE

Huang Yi, Yang Junhua, Wang Chaofan, Liang Haohui, Luo Qi

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Abstract

Aimed at the power extraction of direct drive wave power generation system under complex working conditions, a super-twisting sliding mode control strategy was proposed. The radiation force information was obtained by ANSYS and the hydrodynamic equation of the system was established. By constructing and solving the energy function, the reference electromagnetic force under the maximum power capture strategy was obtained. Taking the voltage and current as input, a model reference adaptive velocity observer based on super-twisting sliding mode is designed, the speed sensorless control was realized. Combined with the vector control strategy, the super spiral sliding mode current control ring is designed to ensure the tracking effect of the reference signal. The simulation results show that the proposed speed observer has less observation error, the current control loop can accurately track the expectation current, the system output power is improved and the dynamic performance is better.

Key words

wave power / model reference adaptive control / permanent magnet synchronous liner machine / super-twisting sliding mode

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Huang Yi, Yang Junhua, Wang Chaofan, Liang Haohui, Luo Qi. POWER OPTIMIZATION OF DIRECT-DRIVE WAVE POWER GENERATION SYSTEMS BASED ON SUPER-TWISTING SLIDING MODE[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 374-380 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0826

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