Analysis and optimization of an inductive wireless high power transfer system

Rosu, Filip; Badescu, A. M.; Rusu, Bogdan

doi:10.1117/12.2324454

Cited by 1 publication

(2 citation statements)

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“…where w s represents the spacing between the centers of the wires of two adjacent turns. Equations ( 10) and (11) require that all values be expressed in inches. The currents passing through each inductor, as shown in Figure 5, can be calculated again with the help of the Z formalism:…”

Section: Tx Charging Pad Analysismentioning

confidence: 99%

“…WPT systems offer several advantages over electrically connected contact-based charging systems [8], among which is a safe operation mode even in wet or dirty environments [9,10] that may be remotely accessed in warzones or hazardous environments or in large areas which are not easily accessible by land vehicles (e.g., forests, mountains, canyons, etc.). The solution proposed in this paper addresses an efficient power transfer in the 200 W-1 kW range [11], at charging distances between 10 and 20 cm. The peak system efficiency of 95% is obtained at 10 cm with an output power of 625 W. In prior work, an electric vehicle (EV) charging system is presented [12], with similar efficiencies, and power transfers of over 3.3 kW-when operating at the same height of 10 cm.…”

Section: Introductionmentioning

confidence: 99%

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Electric and Magnetic Design of a Deployable WPT System for Industrial and Defense UAV Applications

Rosu

Badescu

2021

Electronics

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The following paper presents a highly efficient wireless power transfer (WPT) system for unmanned aerial vehicle (UAV) applications. The proposed system is designed as a deployable landing pad, where UAVs can be efficiently charged at distances up to 20 cm, while the UAV is landing. The operation frequency is 50 kHz. The current work presents two major contributions that help improve this aspect: a novel RX charging pad geometry and an unconventional design of a low-voltage, high-power DC–AC inverter using discrete MOSFET transistors. Both the pad’s geometry and the inverter are designed specifically for UAV applications. The input DC to output AC system efficiency peaks at approximately 95%. The peak efficiency is obtained at power transfers of 625 W. A major difference between the present design and traditionally used state-of-the-art systems is the low DC supply voltage requirement of just 24 V, compared with typical values that range from 50 up to 300 V at similar output power.

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Section: Tx Charging Pad Analysismentioning

confidence: 99%