“…Ozdemir developed a piezoelectric based energy harvesting system which generates average o/p power of 519 microwatt for a wind speed range of 4.5 -5 metre/second (Fig. 6) (Sirohi and Mahadik, 2011 (Sirohi and Mahadik, 2011) Recently, several highly efficient self-excited windmill or wind generator has been fabricated and tested using PZT (Lead Zirconate Titanate) material (Oy and Ozdemir, 2018;Zhou et al, 2019;Wanga et al, 2019;Wang et al, 2016;Laumanna et al, 2017;Hosseinabadi et al, 2013;Hosseinabadi et al, 2016;Zhou et al, 2016).…”