Energy harvesting from a magnetic levitation system |
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Institution: | 1. Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran;2. College of Engineering, Swansea University, Swansea, United Kingdom;3. School of Mechanical Engineering and Automation, Harbin Institute of Technology (Shenzhen), Shenzhen, China |
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Abstract: | Numerical and experimental studies of a magnetic levitation harvester are presented in the paper. The idea is based on the motion of permanent cylinder magnet in a coil exploited for energy harvesting. The novel model is based on a new definition of the coupling coefficient (inductive coefficient) which relates mechanical and an electrical components. The performed static and dynamics experimental tests show that this coefficient is a nonlinear function of the magnet position, and highly depends on the magnet coordinate in the coil, in such a way that the maximum energy is obtained in a coil ends. The comparison between classical – fixed value model – and novel nonlinear model of the inductive coefficient is presented for selected cases. The most essential differences are presented. |
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Keywords: | Magnetic levitation Energy harvesting Coupling coefficient Experimental identification |
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