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

Zhiqiang Yang, Minghui Yin, Yan Xu, Yun Zou, Zhao Yang Dong and Qian Zhou
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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 Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
Yun Zou: School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
Zhao Yang Dong: China Southern Power Grid Electric Power Research Institute, Guangzhou 510000, China
Qian Zhou: Jiangsu Electric Power Company Research Institute, Nanjing 211103, China

Energies, 2016, vol. 9, issue 12, 1-15

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.

Keywords: aerodynamic optimization; design tip speed ratio (TSR); maximum power point tracking (MPPT); inverse design; 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 (2)

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