Wireless energy transfer system for use in underground mining

This paper presents the selected aspects of the research and development work carried out under the HEET II (High Efficiency Energy Transfer) project, supported by the Research Fund for Coal and Steel (RFCS). First, the concept of a system for wireless energy transfer using capacitive coupling is presented. Technically similar solutions, assumptions, selected results of model tests and main components of the system are presented, also connections to cooperating systems are described. An example of a machine adapted to receive energy from the discussed system has been shown. Moreover, the selected research aspects, which require special attention during testing the prototype, regarding the planned implementation, are detailed. The authors focused on the experimental determination of capacitive coupling parameters-the results indicate that it will be possible to meet the requirements of the power transfer in the planned prototype system.