A Review of Frequency Response Solution for Type - 3 Wind Turbines Using Energy Storage Device

Atiqul Islam, Sandeep Nimmagadda, Anitha Subburaj, Stephen B. Bayne


This paper identifies the current approaches to provide the frequency response from type 3 (Doubly Fed Induction Generator based) wind turbines to support the grid during power imbalance. It discusses the use of energy storage devices for providing support during frequency deviation. The paper mainly focuses on the approach to connect the energy storage with the wind turbine through the DC coupling capacitor and use the already available wind turbine AC/DC/AC converter for power conversion. The process to choose an energy storage device and appropriately sizing it for desired support is stated. It also discusses the wind turbine controller strategy modification to properly operate the energy storage device and provide required support. Finally, the study shows simulation results indicating the validation of connecting energy storage through DC coupling capacitor and the updated control algorithm method in different operating condition.


DFIG wind turbine, frequency response, power imbalance, energy storage, DC capacitor, converter controller

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