Characterization of magnetic cores is an indispensable task in order to securely accomplish the requirements of a power electronic design and prevent failures. The hysteresis cycle of the material is one of the more complex feature due to its nonlinear and past-dependent effects over a design. This curve is easily obtained at low frequencies (up to 10kHz) by means of a well-known traditional method. However, there is a major obstacle when trying to operate at higher frequencies in this manner due to the cost and difficulty of operation of high frequency-high voltage generators. In this paper a new method for measuring hysteresis based on a quasi-sinusoidal is presented wich allows us to reach much higher values in frequency with a simple setup.
A new method to characterize magnetic hysteresis in soft ferrites up to high frequencies
TELLINI, BERNARDO;
2004-01-01
Abstract
Characterization of magnetic cores is an indispensable task in order to securely accomplish the requirements of a power electronic design and prevent failures. The hysteresis cycle of the material is one of the more complex feature due to its nonlinear and past-dependent effects over a design. This curve is easily obtained at low frequencies (up to 10kHz) by means of a well-known traditional method. However, there is a major obstacle when trying to operate at higher frequencies in this manner due to the cost and difficulty of operation of high frequency-high voltage generators. In this paper a new method for measuring hysteresis based on a quasi-sinusoidal is presented wich allows us to reach much higher values in frequency with a simple setup.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
