Many electronic devices, such as wireless sensor grids or implantable devices, operate in conditions where replacing or recharging batteries is unfeasible/uneconomical, and increasing the number of batteries to sustain the device for its intended operation time is either cost or size prohibitive. For such devices, harvesting energy from the ambient is necessary for extending their running time.
This research focuses on developing highly efficient, multi-input multi-output power conversion platforms with independent MPPT per input and regulated battery charging that can be employed in a wide variety of use scenarios.
Ahmed Abdelmoaty, Mohammad Al. Shyoukh, Y.C. Hsu, and Ayman Fayed, “A MPPT Circuit with 25 μW Power Consumption and 98.7% Tracking Efficiency for PV Systems,” IEEE Transactions on Circuits & Systems I, available on IEEE Xplore Early Access.
Ahmed Abdelmoaty and Ayman Fayed, “A Single-Step, Single-Inductor Energy-Harvesting-based Power Supply Platform with a Regulated Battery Charger for Mobile Applications,” 2015 IEEE Applied Power Electronics Conference (APEC), Charlotte, North Carolina, Mar. 2015, pp. 666-669.
Ahmed Abdelmoaty and Ayman Fayed, “Power Loss Analysis in Single-Step, Single-Inductor Energy-Harvesting-based Power Supplies,” 2016 IEEE Midwest Symposium on Circuits and Systems (MWSCAS), Abu Dhabi, UAE, Oct. 2016, pp. 297-300.
B. Tar and A. Fayed, “An Overview of the Fundamentals of Battery Chargers,” 2016 IEEE International Midwest Symp. on Circuits and Systems (MWSCAS), Abu Dhabi, UAE, Oct. 2016, pp. 437-440.
Wei Fu, Siang Tan Tong, and Ayman Fayed, “Switching and Conduction Loss Analysis of Buck Converters Operating in DCM-only Scenarios,” 2013 IEEE Int. symposium on circuits and Systems (ISCAS), Beijing, China, May 2013, pp. 921-924.