Analytical modeling and experimental verification of vehicle horn considering skin effect using coupled electric and magnetic circuits

摘要

This paper presents an analytical modeling of an axisymmetric vehicle horn considering skin effect in solid cores based on coupled electric and magnetic circuits. The vehicle horns usually use the solid cores for mass production and cost reduction, but such cores induce high eddy current loss and low inductance. That makes it difficult to estimate the performances of the vehicle horn because of high iron loss current. Thus, the coupled circuits reflect the skin effect of the electromagnetic waves, which travel in conducting mediums under a time-varying field, as well as the nonlinear magnetization curves. The concept “coupled” is introduced to determine the magnetic flux and the back electro-motive force through analyzing the effective current in the electric circuit and the system reluctance in the magnetic circuit. In addition, the analytical approaches to equivalent iron loss resistance and inductance are also presented. Finally, the prototype is tested to validate the aforementioned method.