“Control of Variable Pitch and Variable Speed Direct-Drive Wind Turbines in Weak Grid Systems with active Power Balance”, Int. J. Curr. Eng. Technol., vol. 7, no. 4, pp. 1471–1475, Aug. 2017, Accessed: Mar. 13, 2026. [Online]. Available: https://ijcet.evegenis.org/index.php/ijcet/article/view/2411