Fundamental Investigation of Short-Range Inductive Coupling Wireless Power Transmission by Using Series-Series Capacitive Compensation Topology

Abstract

A Wireless Power Transfer (WPT) Systems was developed applying the concept of resonance theory. This paper is dedicated to a theoretical study of the series-series capacitive compensation topology, then devoted to the experimental implementation of this study to prove its validity. The experiments are set up to operate in 10-20 kHz frequency ranges at distances of 50 mm by using windings made of Litz wires to test the analytical design consideration. The results showed that the system's efficiency increased until reaching its peak at 80 % with a resonance of 20 kHz. The efficiency increases in accordance with resonance frequency. Although the theoretically calculated efficiency with an ideal transformer is 90.1 %, the actual efficiency obtained from the experiments in the laboratory at a coil distance of 50 mm and with a resonance frequency matching at 20 kHz is 80 %.

Grid to vehicle wireless power supply using single-phase matrix converter

“…The source voltage will pass through the SPMC that acts as an AC to AC converter to convert from the line frequency of 50 Hz to the output high frequency of 20 kHz. The use of a 20 kHz switching frequency can provide a high-efficiency wireless power transfer operation [21]. The output high-frequency voltage from the SPMC is as shown in Figure 10(b).…”

“…The main part of such a conversion process uses a single SPMC circuit with proper switching algorithms to perform a direct AC to AC converter. The output frequency of the AC to AC converter is 20 kHz that is suitable for wireless power transfer operation [21]. Then, the high-frequency AC voltage at the transmitter side is transmitted wirelessly through the air gap from the transmitter to the receiver coils on the vehicle side.…”

“…WPT requires a highfrequency switching range from 1 kHz to 100 MHz. 20 kHz of switching frequency has an efficiency of 80% with the transmitter and the receiver coils of the switching frequency operation [21]. Problem statement.…”

Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop

“…The transmission range represents the maximum distance between the transmitter and the receiver of the WPT system. It can be divided into three types: long-range (~m) [4], mid-range (~cm) [5], and short-range (~mm) [6]. MRC-WPT technology has been used in various locations and applications, such as household applications [7], electric vehicles [8,9], and implanted medical devices [10,11].…”