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Energies 2017, 10(1), 22; doi:10.3390/en10010022

Understanding Inertial Response of Variable-Speed Wind Turbines by Defined Internal Potential Vector

State Key Laboratory of Advanced Electromagnetic Engineering Technology, Huazhong University of Science and Technology, Wuhan 430074, China
China Electric Power Research Institute (CEPRI), Beijing 100192, China
Author to whom correspondence should be addressed.
Academic Editor: Frede Blaabjerg
Received: 29 September 2016 / Revised: 9 December 2016 / Accepted: 12 December 2016 / Published: 25 December 2016
(This article belongs to the Special Issue Wind Turbine 2017)
View Full-Text   |   Download PDF [3920 KB, uploaded 26 December 2016]   |  


With the rapid development of wind power generation, the inertial response of wind turbines (WTs) has become a topic of wide concern recently, due to its influence on grid frequency dynamics and stability. This paper proposes and defines the inner potential to summarize and understand the inertia control methods and inertial response of type-3 and type-4 WTs, which is analogous to typical synchronous generators (SGs), to make it more easy to understand by system operators and engineers with a traditional power system background. The dynamics of the defined inner potential of the wind turbine without any inertia control is different from SGs, thus the electromechanical inertia is completely hidden. The rapid power control loop and synchronization control loop are the major reasons that the WT’s inertial response is disenabled. On the basis of the defined inner potential’s dynamic, the existing inertia control method for WTs are reviewed and summarized as three approaches, i.e., optimizing the power control or synchronization control or both. At last, the main challenges and issues of these inertia controls are attempted to explain and address. View Full-Text
Keywords: Inertia control, inertial response; inner potential; variable speed wind turbines Inertia control, inertial response; inner potential; variable speed wind turbines

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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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Shang, L.; Hu, J.; Yuan, X.; Chi, Y. Understanding Inertial Response of Variable-Speed Wind Turbines by Defined Internal Potential Vector. Energies 2017, 10, 22.

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