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Energies 2016, 9(12), 1023; doi:10.3390/en9121023

Inverse Aerodynamic Optimization Considering Impacts of Design Tip Speed Ratio for Variable-Speed Wind Turbines

1
School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
2
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
3
China Southern Power Grid Electric Power Research Institute, Guangzhou 510000, China
4
School of Electrical and Information Engineering, University of Sydney, Sydney, NSW 2006, Australia
5
Jiangsu Electric Power Company Research Institute, Nanjing 211103, China
*
Author to whom correspondence should be addressed.
Academic Editor: Frede Blaabjerg
Received: 5 September 2016 / Revised: 23 November 2016 / Accepted: 28 November 2016 / Published: 3 December 2016
(This article belongs to the Collection Wind Turbines)
View Full-Text   |   Download PDF [3691 KB, uploaded 3 December 2016]   |  

Abstract

Because of the slow dynamic behavior of the large-inertia wind turbine rotor, variable-speed wind turbines (VSWTs) are actually unable to keep operating at the design tip speed ratio (TSR) during the maximum power point tracking (MPPT) process. Moreover, it has been pointed out that although a larger design TSR can increase the maximum power coefficient, it also greatly prolongs the MPPT process of VSWTs. Consequently, turbines spend more time operating at the off-design TSRs and the wind energy capture efficiency is decreased. Therefore, in the inverse aerodynamic design of VSWTs, the static aerodynamic performance (i.e., the maximum power coefficient) and the dynamic process of MPPT should be comprehensively modeled for determining an appropriate design TSR. In this paper, based on the inverse design method, an aerodynamic optimization method for VSWTs, fully considering the impacts of the design TSR on the static and dynamic behavior of wind turbines is proposed. In this method, to achieve higher wind energy production, the design TSR, chord length and twist angle are jointly optimized, which is structurally different from the conventional separated design procedure. Finally, the effectiveness of the proposed method is validated by simulation results based on the Bladed software. View Full-Text
Keywords: aerodynamic optimization; design tip speed ratio (TSR); maximum power point tracking (MPPT); inverse design; variable-speed wind turbine (VSWT) aerodynamic optimization; design tip speed ratio (TSR); maximum power point tracking (MPPT); inverse design; variable-speed wind turbine (VSWT)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yang, Z.; Yin, M.; Xu, Y.; Zou, Y.; Dong, Z.Y.; Zhou, Q. Inverse Aerodynamic Optimization Considering Impacts of Design Tip Speed Ratio for Variable-Speed Wind Turbines. Energies 2016, 9, 1023.

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