A 1MHz Oak Ridge AC / DC Converter for UAV Contactless Charger Implementation

Erdem Asa; Lincoln Xue; Mostak Mohammad; Veda P. Galigekere; Omer C. Onar; Burak Ozpineci

doi:10.1109/APEC43599.2022.9773397

A 1MHz Oak Ridge AC / DC Converter for UAV Contactless Charger Implementation

Erdem Asa, Lincoln Xue, Mostak Mohammad, Veda P. Galigekere, Omer C. Onar, Burak Ozpineci

Research output: Contribution to conference › Paper › peer-review

2 Scopus citations

Abstract

In this paper, a 1 MHz single-phase Oak Ridge Converter (ORC) AC/DC wireless power transfer (WPT) system is introduced for unmanned air vehicle (UAV) charging applications. The proposed advanced solution eliminates the design, weight, volume, and the cost of the power factor correcting (PFC) front-end rectifier compared to the conventional practices. Additionally, grid power quality requirements can be achieved with the presented innovative idea. With this method, single stage WPT primary side uses the hybrid grid frequency and high frequency (60 Hz and 1 MHZ) from ac source through the coupler coils and to UAV battery with GaN FETs. Experimental results of the single-phase system is presented to confirm the mathematical analyses with the source voltage of 110 VAC, RMS and output voltage of 40 VDC at 1 kW power with 6 inches air gap between couplers. The primary coupler consists of a ferrite-backed single-turn coil with a radius of 1.5 ft, and the secondary coupler is made with an air-core single-turn coil with radius of 1.2 ft. The system overall ac to dc efficiency is measured 77 % acquiring 0.99 power factor (PF) and 3.3 % current total harmonic distortion (THD) at 1 kW power.

Original language	English
Pages	537-541
Number of pages	5
DOIs	https://doi.org/10.1109/APEC43599.2022.9773397
State	Published - 2022
Event	37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022 - Houston, United States Duration: Mar 20 2022 → Mar 24 2022

Conference

Conference	37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022
Country/Territory	United States
City	Houston
Period	03/20/22 → 03/24/22

Funding

This project is funded by Oak Ridge National Laboratory's Technology Innovation Program (TIP) under Technology Transfer Office with the project ID UTB2107(6) and name “Operation Duration Extender for Unmanned Aerial Vehicles (UAV)”. This research used resources available at the Power Electronics and Electric Machinery Research Center located at the National Transportation Research Center, a DOE EERE User Facility operated by the Oak Ridge National Laboratory (ORNL). The authors would like to thank the Technology Transfer Office Director, Michael Paulus for his support of this work and his guidance. This manuscript has been authored by Oak Ridge National Laboratory, operated by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
U.S. Department of Energy
Oak Ridge National Laboratory	UTB2107

Keywords

1MHz
Oak Ridge
UAV
ac-to-dc
contactless
converter
energy
resonant
transfer

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10.1109/APEC43599.2022.9773397

Cite this

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title = "A 1MHz Oak Ridge AC / DC Converter for UAV Contactless Charger Implementation",

abstract = "In this paper, a 1 MHz single-phase Oak Ridge Converter (ORC) AC/DC wireless power transfer (WPT) system is introduced for unmanned air vehicle (UAV) charging applications. The proposed advanced solution eliminates the design, weight, volume, and the cost of the power factor correcting (PFC) front-end rectifier compared to the conventional practices. Additionally, grid power quality requirements can be achieved with the presented innovative idea. With this method, single stage WPT primary side uses the hybrid grid frequency and high frequency (60 Hz and 1 MHZ) from ac source through the coupler coils and to UAV battery with GaN FETs. Experimental results of the single-phase system is presented to confirm the mathematical analyses with the source voltage of 110 VAC, RMS and output voltage of 40 VDC at 1 kW power with 6 inches air gap between couplers. The primary coupler consists of a ferrite-backed single-turn coil with a radius of 1.5 ft, and the secondary coupler is made with an air-core single-turn coil with radius of 1.2 ft. The system overall ac to dc efficiency is measured 77 % acquiring 0.99 power factor (PF) and 3.3 % current total harmonic distortion (THD) at 1 kW power.",

keywords = "1MHz, Oak Ridge, UAV, ac-to-dc, contactless, converter, energy, resonant, transfer",

author = "Erdem Asa and Lincoln Xue and Mostak Mohammad and Galigekere, {Veda P.} and Onar, {Omer C.} and Burak Ozpineci",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022 ; Conference date: 20-03-2022 Through 24-03-2022",

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doi = "10.1109/APEC43599.2022.9773397",

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AU - Asa, Erdem

AU - Xue, Lincoln

AU - Mohammad, Mostak

AU - Galigekere, Veda P.

AU - Onar, Omer C.

AU - Ozpineci, Burak

PY - 2022

Y1 - 2022

N2 - In this paper, a 1 MHz single-phase Oak Ridge Converter (ORC) AC/DC wireless power transfer (WPT) system is introduced for unmanned air vehicle (UAV) charging applications. The proposed advanced solution eliminates the design, weight, volume, and the cost of the power factor correcting (PFC) front-end rectifier compared to the conventional practices. Additionally, grid power quality requirements can be achieved with the presented innovative idea. With this method, single stage WPT primary side uses the hybrid grid frequency and high frequency (60 Hz and 1 MHZ) from ac source through the coupler coils and to UAV battery with GaN FETs. Experimental results of the single-phase system is presented to confirm the mathematical analyses with the source voltage of 110 VAC, RMS and output voltage of 40 VDC at 1 kW power with 6 inches air gap between couplers. The primary coupler consists of a ferrite-backed single-turn coil with a radius of 1.5 ft, and the secondary coupler is made with an air-core single-turn coil with radius of 1.2 ft. The system overall ac to dc efficiency is measured 77 % acquiring 0.99 power factor (PF) and 3.3 % current total harmonic distortion (THD) at 1 kW power.

AB - In this paper, a 1 MHz single-phase Oak Ridge Converter (ORC) AC/DC wireless power transfer (WPT) system is introduced for unmanned air vehicle (UAV) charging applications. The proposed advanced solution eliminates the design, weight, volume, and the cost of the power factor correcting (PFC) front-end rectifier compared to the conventional practices. Additionally, grid power quality requirements can be achieved with the presented innovative idea. With this method, single stage WPT primary side uses the hybrid grid frequency and high frequency (60 Hz and 1 MHZ) from ac source through the coupler coils and to UAV battery with GaN FETs. Experimental results of the single-phase system is presented to confirm the mathematical analyses with the source voltage of 110 VAC, RMS and output voltage of 40 VDC at 1 kW power with 6 inches air gap between couplers. The primary coupler consists of a ferrite-backed single-turn coil with a radius of 1.5 ft, and the secondary coupler is made with an air-core single-turn coil with radius of 1.2 ft. The system overall ac to dc efficiency is measured 77 % acquiring 0.99 power factor (PF) and 3.3 % current total harmonic distortion (THD) at 1 kW power.

KW - 1MHz

KW - Oak Ridge

KW - UAV

KW - ac-to-dc

KW - contactless

KW - converter

KW - energy

KW - resonant

KW - transfer

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A 1MHz Oak Ridge AC / DC Converter for UAV Contactless Charger Implementation

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