Finite element analysis method of inter-turn short circuit fault in wireless power transfer system based on Comsol Multiphysics
To address the issue of insulation damage in wireless power transfer system coils,which leads to inter-turn short circuits and affects system performance,a planar spiral wireless power transfer system was established using the finite element method in Comsol Multiphysics.The short-circuit points were parameterized,and the changes in the coupling coefficient between the transmitting and receiving coils,as well as the spatial magnetic field distribution,were analyzed under conditions of different numbers of shorted turns and short-circuit locations in the transmitting coil.Simulation re-sults indicate that as the ratio of short-circuited turns increases,the self-inductance of the coil and mu-tual inductance between coils gradually decrease.However,the coupling strength between the trans-mitting and receiving coils shows an increasing trend,leading to a rapid decline in output power for a series-series topology wireless power transmission system.When the short-circuit position in the transmitting coil moves from the inner turns to the outer turns,the coupling strength initially decrea-ses and then increases,and consequently,the output power of a series-series topology wireless power transmission system first increases and then decreases.
smart gridswireless power transfer systeminter-turn short circuitfinite element anal-ysis
万方数据
维普
