Innovative Capacitive Wireless Power System for Machines and Devices

Marcin Skóra (), Joanna Rogala-Rojek, Sebastian Jendrysik, Krzysztof Stankiewicz, Bartosz Polnik, Zbigniew Kaczmarczyk, Marcin Kasprzak, Paweł Lasek and Krzysztof Przybyła
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Marcin Skóra: KOMAG Institute of Mining Technology, Pszczyńska 37, 44-100 Gliwice, Poland
Joanna Rogala-Rojek: KOMAG Institute of Mining Technology, Pszczyńska 37, 44-100 Gliwice, Poland
Sebastian Jendrysik: KOMAG Institute of Mining Technology, Pszczyńska 37, 44-100 Gliwice, Poland
Krzysztof Stankiewicz: KOMAG Institute of Mining Technology, Pszczyńska 37, 44-100 Gliwice, Poland
Bartosz Polnik: KOMAG Institute of Mining Technology, Pszczyńska 37, 44-100 Gliwice, Poland
Zbigniew Kaczmarczyk: Power Electronics Electrical Drives and Robotics Department (KENER), Silesian University of Technology, Krzywoustego Str. No. 2, 44-100 Gliwice, Poland
Marcin Kasprzak: Power Electronics Electrical Drives and Robotics Department (KENER), Silesian University of Technology, Krzywoustego Str. No. 2, 44-100 Gliwice, Poland
Paweł Lasek: Power Electronics Electrical Drives and Robotics Department (KENER), Silesian University of Technology, Krzywoustego Str. No. 2, 44-100 Gliwice, Poland
Krzysztof Przybyła: Power Electronics Electrical Drives and Robotics Department (KENER), Silesian University of Technology, Krzywoustego Str. No. 2, 44-100 Gliwice, Poland

Energies, 2025, vol. 18, issue 3, 1-23

Abstract: This article deals with the design, development, and analysis of a wireless power transfer system prototype based on capacitive coupling. The system is intended for the continuous charging of a suspended mine drivetrain. It consists of a resonant inverter, primary and secondary matching circuits, a suitable capacitive coupler, and a rectifier with a load, ultimately serving as a battery charger for a mobile energy storage device. The system successfully achieved the target output voltage of 320 V and a charger output power of 2 kW at an operating frequency of 300 kHz. Additionally, the total system efficiency was at the level of 60%, ensuring that the RMS voltages on passive components remained below 3 kV.

Keywords: resonant circuits; wireless energy transfer; capacitive coupling; design and measurements (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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