Comparative Study of Efficiency of Wireless Power Transfer Systems

Author(s)	Mr. Vedant Kumar Saha, Dr. Sapan Kumar Saha
Country	India
Abstract	A promising approach for transferring electrical energy without physical connectors is wireless power transfer, or WPT. Because of its uses in consumer electronics, electric vehicles, biomedical devices, and industrial automation, this technology has attracted a lot of attention. However, the transmission technique, distance, alignment, and operating frequency all have a substantial impact on power transfer efficiency. This research paper presents a comparative analysis of different wireless power transfer techniques, including inductive coupling, resonant inductive coupling, and microwave power transfer. The study assesses each method's effectiveness in several operational scenarios, including coil alignment, load circumstances, and distance variance. According to theoretical research and simulation, resonant inductive coupling performs better for mid-range applications, whereas inductive coupling delivers the maximum efficiency for short distances. Long-distance transmission is made possible by microwave power transfer, while the efficiency is reduced because of propagation losses. The findings offer guidance on choosing the best WPT technology for particular uses.
Keywords	Wireless Power Transfer, Inductive Coupling, Resonant Coupling, Microwave Power Transfer, Efficiency Analysis.
Field	Engineering
Published In	Volume 17, Issue 1, January-March 2026
Published On	2026-03-31

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