Abstract
In view of the collection of vibration energy generated by omnidirectional vibration devices such as washing machine, a new method of electromagnetic vibration power generation based on washing machine is proposed. The physical model of closed magnetic circuit is established by using spring, permanent magnet, winding coil and square frame. The mathematical model and theoretical derivation are carried out according to the relevant laws of electromagnetic induction, and the physical model is obtained. Combined with the software of COMSOL multiphysics, the finite element method is used to simulate the model. In the simulation process, the magnetic field and voltage state of one side of the square frame are transformed into two-dimensional images due to the characteristics of axisymmetry; the parameters are set, the magnetic field and mathematical field are established to obtain the steady-state solution; the transient solution is obtained by grid thinning. The simulation results are consistent with the calculation results, which proves that the electromagnetic vibration power generation method realized in this paper is feasible.
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