Energy-based Method to Estimate the Partial Hard Turn-on Loss of Complementary SiC MOSFET from Experiment

Mandal, M and Bharath Kumar, M and Malingu, G and Roy, SK and Basu, K (2024) Energy-based Method to Estimate the Partial Hard Turn-on Loss of Complementary SiC MOSFET from Experiment. In: UNSPECIFIED, pp. 1114-1119.

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Abstract

In a capacitor-assisted soft-switching converter, the zero-voltage turn-on (lossless) of the complementary MOSFET is lost at low values of load current, and it incurs a significant amount of turn-on loss. This phenomenon is termed as the partial hard turn-on, and it is a special case of soft-switching dynamics. Estimation of partial hard turn-on loss is essential for predicting light load efficiency of any soft-switched converter. However, direct experimental measurement is not accurate due to the presence of circuit parasitics. Also, it is difficult to measure waveforms of high-side devices due to high-frequency common mode voltage. This paper proposes an alternate energy-based method to estimate the partial hard turn-on loss of the complementary MOSFET using experimental data. This method is derived from the behavioral model through approximations. Although indirect, this method results in a simple and accurate estimation of partial hard turn-on loss from measured waveforms. The proposed energy-based technique is verified through behavioral simulation and experiment for a 39A, 1200V SiC MOSFET for a wide range of operating conditions. © 2024 IEEE.

Item Type:	Conference Paper
Publication:	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	MOSFET devices; Power converters; Power electronics; Silicon; Silicon carbide, Energy-based methods; Partial hard turn-on; SiC MOSFETs; Soft-switching; Softswitching converters; Waveforms; Zero voltage; Zero- Voltage Switching; Zero-voltage switching, Zero voltage switching
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	31 May 2024 05:12
Last Modified:	31 May 2024 05:12
URI:	https://eprints.iisc.ac.in/id/eprint/85150

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