Magnetic characterization under PWM and PWM-like excitations

Pulse-Width-Modulation (PWM)-like voltages are typical operating conditions for magnetic cores, but introduce additional complexity in the characterization and loss prediction due to the presence of high-order harmonics, minor hysteresis loops, and fast dynamics. Experimental characterizations under controlled induced voltage are undertaken to investigate the dependence of the magnetic loss on the PWM specific parameters, and to identify the most important quantities to measure for an accurate representation of the material behaviour in such conditions.