DESIGN AND PERFORMANCE COMPARISON OF TWO WIRELESS POWER TRANSFER SYSTEMS BASED ON MAGNETIC INDUCTIVE COUPLING AND MAGNETIC RESONANCE COUPLING

Abstract

Wireless power transfer (WPT) is the technology that enables power transmission without the need for physical wires, such as electric wires typically used for power transmission. Near-field WPT is the most common for commercial devices that can be classified by two transmission methods: inductive coupling and magnetic resonance coupling. This paper provides a comparative analysis of the performance of two WPT systems that use two different configurations based on a transfer mechanism. The first system is a four-coil structure that utilizes the magnetic resonance coupling technique and operates at a frequency of 13.56 MHz. Conversely, the second WPT system is a two-coil structure that employs the inductive coupling method and operates at a frequency of 500 kHz. The results of this work demonstrate the superiority of magnetic resonant coupling WPT over inductive coupling WPT in terms of transmission distance. The results of this paper can serve as a reference for designing WPT systems in applications where simplicity, transmitted power, and transmission distance need to be considered