Date of Award
Master of Science (MS)
In this thesis the sensitivity of energy conversion efficiency (ECE) and output power of a class-E resonant inverter under variable resistive and inductive load assignments is examined for wireless power transfer (WPT) applications. By performing simulation and mathematical analysis, it was found that the on-resistance of the switching device has minor effect on the design’s efficiency. Additional comparisons between the simulation and mathematical analysis show reasonable output power and ECE load variation performance for the design, but with unique load impedances where zero voltage switching (ZVS) and zero derivative switching (ZDS) are achieved. These comparisons also expose inaccurate mathematical assumptions. Experimental test results are presented to validate simulation and mathematical assumptions. These tests also show invalid assumptions used in the simulation and mathematical analysis and the performance of the class-E resonant power inverter suffer due to the difference in resonant frequencies during switch on and off state periods, nonlinear shunt capacitance, and parasitic impedances.
Jennings, Richard Samuel, "A Study of the Sensitivity of Energy Conversion Efficiency to Load Variation in Class-E Resonant Power Inverter" (2017). Electrical & Computer Engineering Theses & Disssertations. 17.