Simulation of Leakage Electromagnetic Radiation from Vehicle due to Battery Management System

Because existing information on leaked electromagnetic waves is not available, a model and simulation method are required to generate this information. Owing to the complexity of the problem, a feasible simulation method that considers the characteristics of the leaked electromagnetic radiation from devices inside a vehicle and vehicle body frame effects is proposed. The known leakage spectrum of the device was converted into a time-domain signal using inverse Fourier transform. Because the device was modeled as a dipole antenna, the distortion of the dipole must be compensated. The antenna was then placed inside the vehicle and the leakage wave was simulated using the commercial CAD tool CST. The correlation coefficient between the generated signals was computed, which showed that the dataset was statistically independent.