PCSMC design of permanent magnetic synchronous generator for maximum power point tracking

Yang, Bo, Zhong, Linen, Yu, Tao, Shu, Hongchun, Cao, Pulin, An, Na, Sang, Yiyan and Jiang, Lin ORCID: 0000-0001-6531-2791 (2019) PCSMC design of permanent magnetic synchronous generator for maximum power point tracking. IET GENERATION TRANSMISSION & DISTRIBUTION, 13 (14). pp. 3115-3126.

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Official URL: http://dx.doi.org/10.1049/iet-gtd.2018.5351

Abstract

This study develops a perturbation compensation based sliding-mode control (PCSMC) strategy of a permanent magnetic synchronous generator (PMSG) for optimal extraction of wind energy. Firstly, PMSG non-linearities, uncertain parameters, unmodelled dynamics, and stochastic wind speed variations are aggregated into a perturbation. Then, it is estimated by a sliding-mode state and perturbation observer in the real time. Further, the perturbation estimate is fully cancelled by sliding-mode controller (SMC) for global control consistency, together with considerable robustness thanks to the sliding-mode mechanism. In addition, the upper bound of perturbation is replaced by its real-time estimate; thus more proper control costs could be achieved without over-conservativeness. Moreover, PCSMC does not require an accurate PMSG model while only the measurement of d-axis current and mechanical rotation speed is required. Four case studies are carried out, e.g. step change of wind speed, low-turbulence stochastic wind speed, high-turbulence stochastic wind speed, and PMSG parameter uncertainties. Simulation results demonstrate that PCSMC can rapidly extract higher power under different wind speed profiles against vector control and SMC. Lastly, a dSpace-based hardware-in-the-loop experiment is undertaken which validates its implementation feasibility.

Item Type:	Article
Uncontrolled Keywords:	robust control, nonlinear control systems, uncertain systems, control system synthesis, machine control, permanent magnet generators, power generation control, variable structure systems, maximum power point trackers, synchronous generators, observers, wind turbines, PCSMC design, permanent magnetic synchronous generator, maximum power point tracking, perturbation compensation, sliding-mode control strategy, optimal extraction, wind energy, PMSG nonlinearities, uncertain parameters, unmodelled dynamics, stochastic wind speed variations, sliding-mode state, perturbation estimate, sliding-mode controller, global control consistency, considerable robustness thanks, sliding-mode mechanism, real-time estimate, proper control costs, accurate PMSG model, mechanical rotation speed, low-turbulence stochastic wind speed, high-turbulence stochastic wind speed, PMSG parameter uncertainties, different wind speed profiles, vector control
Depositing User:	Symplectic Admin
Date Deposited:	28 Aug 2019 13:22
Last Modified:	19 Jan 2023 00:28
DOI:	10.1049/iet-gtd.2018.5351
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3052719