A flat linear generator with axial magnetized permanent magnets with reduced accelerative force for backpack energy harvesting

This paper presents a flat linear generator with axial magnetized permanent magnets for backpack energy harvesting. Finite Element Analysis (FEA) is carried out to investigate the electromagnetic characteristic. An electro-mechanical model based on the linear generator is built. It has been demonstrated that, under the walking frequency of 1.95 Hz, the backpacker carrying a 25 Kg pack can employ this 3.25 Kg generator to harvest 7.2 W power. Moreover, 30% of the peak accelerative force is eliminated for the backpacker.