Estimation of Parasitic Capacitance of Common Mode Noise in Vehicular Applications: An Unscented Kalman Filter-Based Approach

Parasitic capacitance has a considerable impact on conductive electromagnetic interference (EMI), especially the common mode (CM) noise. In vehicular applications, such as more electric aircraft and electrical vehicles, value of CM stray can vary during drive cycle, due to some change in environmental, operating conditions, resulting fluctuations EMI level. Designing filters according potentially overestimated results additional weight, volume, cost which should be avoided. this paper, for first time, parasitic relevant noise is estimated real-time using unscented Kalman filter (UKF). The UKF employed its ability dealing with nonlinearity stochastic nature well measurement noises. proposed method tested typical dc-dc buck converter different conditions. effectiveness hardware-in-the-loop experiments dSPACE1104 development platform.