Ajayi-Obe, A. A., Khan, M. A. and Barendse, P. S. (2019) “Techno-economic evaluation of five-level nested neutral point clamped converter topology for transformer-less connection of high-power wind energy conversion systems”, Journal of Energy in Southern Africa, 30(3), pp. 33–43. doi: 10.17159/2413-3051/2019/v30i3a5691.