A Multi-Point Method Considering the Maximum Power Point Tracking Dynamic Process for Aerodynamic Optimization of Variable-Speed Wind Turbine Blades

Zhiqiang Yang, Minghui Yin, Yan Xu, Zhengyang Zhang, Yun Zou and Zhao Yang Dong
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Zhiqiang Yang: School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
Minghui Yin: School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
Yan Xu: School of Electrical and Information Engineering, University of Sydney, Sydney, NSW 2006, Australia
Zhengyang Zhang: School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
Yun Zou: School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
Zhao Yang Dong: School of Electrical and Information Engineering, University of Sydney, Sydney, NSW 2006, Australia

Energies, 2016, vol. 9, issue 6, 1-16

Abstract: Due to the dynamic process of maximum power point tracking (MPPT) caused by turbulence and large rotor inertia, variable-speed wind turbines (VSWTs) cannot maintain the optimal tip speed ratio (TSR) from cut-in wind speed up to the rated speed. Therefore, in order to increase the total captured wind energy, the existing aerodynamic design for VSWT blades, which only focuses on performance improvement at a single TSR, needs to be improved to a multi-point design. In this paper, based on a closed-loop system of VSWTs, including turbulent wind, rotor, drive train and MPPT controller, the distribution of operational TSR and its description based on inflow wind energy are investigated. Moreover, a multi-point method considering the MPPT dynamic process for the aerodynamic optimization of VSWT blades is proposed. In the proposed method, the distribution of operational TSR is obtained through a dynamic simulation of the closed-loop system under a specific turbulent wind, and accordingly the multiple design TSRs and the corresponding weighting coefficients in the objective function are determined. Finally, using the blade of a National Renewable Energy Laboratory (NREL) 1.5 MW wind turbine as the baseline, the proposed method is compared with the conventional single-point optimization method using the commercial software Bladed. Simulation results verify the effectiveness of the proposed method.

Keywords: aerodynamic optimization; closed-loop system; multi-point method; maximum power point tracking (MPPT) control; variable-speed wind turbine (VSWT) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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