Theoretical-experimental analysis possibility of electromechanical couplings shaping in energy harvesting systems

OPUS 18

Funding Organization: National Science Centre

Project title: Theoretical-experimental analysis possibility of electromechanical  couplings shaping in energy harvesting systems

Agreement number: UMO-2019/35/B/ST8/01068

Project implementation period: 27.07.2020 - 26.07.2023

Principal Investigator: dr hab. Krzysztof Kęcik

Project value: 478 560,00 PLN

Funds granted for Lublin University of Technology: 478 560,00 PLN

Abstract: The research project concerns the electromechanical coupling problem in the system consists of the set of magnets and coils applied to the energy harvesters. The literature study shows that the electromechanical coupling (called transduction factor) is modelled as a fixed value for given parameters. The simplification causes reduction of one degree of freedom. Then the electromechanical coupling is treated as the electrical damping. Moreover, this approach does not include the coil’s inductance. This approach can lead to the wrong results, especially for the high oscillations. The main goal and the novelty of the research project will be the possibility of shaping of the electromechanical coupling functions by the proper designed levitated magnet, consists of set of smaller magnets and the neutral magnetic elements (called separators) and special designed modular coil with the variable inductance. The symmetric and non-symmetric construction of the levitation magnet will be analysed. It is expected that the proper design of a main oscillating magnet can significantly modify the coupling function and increase the efficiency of energy recovery.
The second goal of this project is to develop of non-linear models of the electromechanical coupling, which will include both electrical parameters and the magnet-coil configuration. The preliminary study, show the magnet vibration centre position has a significant influence on the energy recovery level. The developed electromechanical models will be applied in the vibration and energy harvesting analysis of the levitating magnet. The proposed models of electromechanical couplings include the mechanical and electrical interaction. Additionally, a new element in the research project will be including the coil’s induction controlled by the movable ferromagnetic core and the shape of the magnet (different distribution of the magnetic field). Finally, the developed maglev systems with the proposed electromechanical coupling models will be applied in the vibration mitigation systems to effective energy recovery. This is important especially in the vibration mitigation conditions. This project is realized in the engineering discipline.