Developing a hybrid wireless power transfer system for electric vehicles

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Abstract

Background: Today, automotive research organizations worldwide are actively developing wireless power transfer systems for electric vehicles. The key advantage of such systems is their ability to resupply power on board the moving vehicle without using a contact slider.

Aim: This study aims to increase the energy efficiency of electric vehicles by using a hybrid wireless power transfer system.

Materials and methods: The study used a mathematical model of urban driving cycle as provided by UNECE Regulation No. 83.

Results: We developed a structural diagram of a hybrid wireless power transfer system and determined its operational algorithm for the urban driving cycle. The author reviewed and analyzed the relative contemporary research and development and various wireless power transfer systems for electric vehicles. The target of this study is a magnetic coupling resonant wireless power transfer system with one primary coil for power transfer and a battery of supercapacitors for accumulation.

Conclusion: Automotive companies and research institutes may use the proposed traction voltage system and its operational algorithm to design urban passenger vehicles.

About the authors

Egor M. Klimov

Moscow Polytechnic University

Author for correspondence.
Email: klimov.mami@yandex.ru
ORCID iD: 0009-0004-9739-0267
SPIN-code: 2759-7425

Lecturer at the Electrical Equipment and Industrial Electronics Department

Russian Federation, Moscow

Anatoly M. Fironov

Moscow Polytechnic University

Email: a.m.fironov@mospolytech.ru
ORCID iD: 0000-0003-2683-9958
SPIN-code: 8824-5702

Cand. Sci. (Engineering), Assistant Professor, Assistant Professor of the Land Vehicles Department

Russian Federation, Moscow

Ruslan A. Maleev

Moscow Polytechnic University

Email: 19rusmal@gmail.com
ORCID iD: 0000-0003-3430-6406
SPIN-code: 7801-3294

Cand. Sci. (Engineering), Assistant Professor, Professor of the Electrical Equipment and Industrial Electronics Department

Russian Federation, Moscow

Sergey M. Zuev

MIREA-Russian Technological University; Central Research Automobile and Automotive Engines Institute NAMI

Email: sergei_zuev@mail.ru
ORCID iD: 0000-0001-7033-1882
SPIN-code: 6602-6618

Cand. Sci. (Physics and Mathematics), Assistant Professor, Head of the Department for Training Highly Qualified Personnel and Continuing Professional Education, Assistant Professor of the Optical-Electronic Devices and Systems Department

Russian Federation, Moscow; Moscow

References

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Supplementary files

Supplementary Files
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1. JATS XML
2. Fig. 4. Electric coupling power transfer system of an electric vehicle: 1: aelectric vehicle; 2: power supply; 3: secondary coil of transformer; 4: primary coil of transformer; 5, 8, 9: power supply cables; 6: neutral plate; 7: switching converter; 10: bearing surface; 11: on-board energy storage; 12: air gap; 13: wheel.

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3. Fig. 6. The traction electric system of a prototype: 1: secondary coil; 2: capacitor; 3: rheostat; 4: rectifier; 5: traction motor; 6: axle drive.

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4. Fig. 1. Circuit diagram of an electric vehicle’s wireless power transfer system with one primary coil.

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5. Fig. 2. Circuit diagram of an electric vehicle’s magnetic coupling resonant power transfer system with multiple coils.

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6. Fig. 3. Temporal variation curves of system efficiency: DC to DC efficiency (%) is the energy transfer efficiency from inverter to battery in percent; time t, (s) is the time in seconds; ηDC-DC is the efficiency; moving average of ηDC-DC is the average efficiency.

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7. Fig. 5. Estimated urban driving cycle as provided by UNECE Regulation No. 83.

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8. Fig. 7. Operational algorithm of the traction voltage system in the urban driving cycle: КБ: the capacitor is used for driving; PT: regenerative braking.

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