Beczkowski, Szymon Michal

Jørgensen, Asger Bjørn

Munk-Nielsen, Stig

Zäch, Mike Robin

English

The switching losses occurring between full soft-switching and hard-switching are described inadequately, and previous attempts of quantifying incomplete zero-voltage switching losses are topology specific and not applicable for any general half-bridge circuit. The ability to quantity these losses is crucial to optimize the converter efficiency across a wide operating range. This paper proposes a general method for accurately estimating the incomplete zero-voltage switching dynamics and losses in half-bridge converters, including the non-linear output capacitance of the semiconductors. The charge balance during the switching transition period is solved to determine the depth of incomplete zero-voltage switching, which can be used to predict the switching losses. The method is verified experimentally, and is shown to be able to predict the depth of incomplete zero-voltage switching accurately, which can be used to calculate the related losses

Accurate Prediction of Incomplete Zero-Voltage Switching Dynamics and Losses

https://vbn.aau.dk/files/559125310/IEEE_Paper_Incomplete_Zero_Voltage_Switching_Losses_.pdf

Accurate Prediction of Incomplete Zero-Voltage Switching Dynamics and Losses

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