1. Abdel-Salam M, EL-Mohandes M, Goda M (2018) An improved perturb-and-observe based MPPT method for PV systems under varying irradiation level. Sol Energy 171:547–561
2. Schoeman JJ, VanWyk JD (1982) A simplified maximal power controller for terrestrial photovoltaic panel arrays. In: Proceeding 13th annual IEEE power electronics specialists conference, pp 361–367
3. Sera D, Teodorescu R, Kerekes T, Blaabjerg F (2006) Improve MPPT method for rapidly changing environmental conditions. In: Proceeding 12th conference electronics and motion control, Montreal, Quebec, Canada, pp 1614–1619
4. Yafaoui A, Wu B, Cheung R (2007) Implementation of maximum power point tracking algorithm for industrial photovoltaic systems. In: Proceeding 2nd Conference Canadian Solar Buildings. Calgary, Canada, 10–14 June 2007, pp 1–6
5. Liu Y, Xia D, He Z (2011) MPPT of a PV system based on the particle swarm optimization. In: Electric utility deregulation and restructuring and power technologies (DRPT), pp 1094–1096