A.A. Jhumka, R.T.F.A. King, C. Ramasawmy, A. Khoodaruth "Proportional Derivative and Proportional Integral Derivative Controllers for Frequency Support of a Wind Turbine Generator in a Diesel Generation Mix", Advances in Science, Technology and Engineering Systems Journal, vol. 8, no. 4, pp. 60-65 (2023).