Ukoima K. N., and Ezeonye C. S., Uwaoma M. U., Chikere N. C. “Rotational Energy Harvesting System: Power Conditioning, Controller and Observer Design”. Journal of Power Electronics and Devices 6, no. 1 (February 20, 2020): 28–35. Accessed December 20, 2024. http://matjournals.co.in/index.php/JOPED/article/view/3790.