Analytical Loss Modeling for MOSFET-based Modular High Frequency Converters

다국어 초록 (Multilingual Abstract)

In high switching frequency inverter applications besides conduction and switching losses, the contribution of incomplete soft-switching events to the total losses of the power converter can be significant. This paper presents an analytical loss model for Modular High-Frequency Converters (MHFC) that accounts for this kind of transitions as well. This is accomplished by taking into consideration the charging dynamics of the MOSFET output capacitance. Only parameters that are readily available in the datasheets of the devices are used. The derived equations are employed to evaluate several power MOSFETS for a 3-submodule 1 kW prototype MHFC, switching at 100 kHz. The proposed model confirms the key role of partial hard turn-on events, as well as it reveals the importance of proper dead-time selection, in terms of total converter losses. Experimental results are in agreement with the proposed model.

목차 (Table of Contents)

• Abstract
• I. INTRODUCTION
• II. MOSFET LOSS MECHANISMS
• III. ANALYTICAL LOSS MODEL
• V. PROTOTYPE AND EXPERIMENTAL RESULTS
• VI. CONCLUSIONS
• REFERENCES