{'fraction_non_alphanumeric': 0.02102496714848883, 'fraction_numerical': 0.006570302233902759, 'mean_word_length': 5.245901639344262, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Switching Performance Evaluation and Loss Analysis of SiC-based Neutral Point Clamped Bidirectional AC/DC Converter

This paper presents a comprehensive switching performance evaluation and the loss breakdown analysis of a 3-level Neutral Point Clamped (NPC) bidirectional AC/DC converter with SiC MOSFETs. The switching transient of SiC devices in different 3-level commutation loops is characterized and compared for design optimization. The loss analysis for the NPC converter at various operating modes is carried out, based on a detailed loss model for both power switch and filter inductor. Based on the evaluation, a 15-kW 3-level NPC bidirectional AC/DC converter is implemented with SiC devices to operate at various conditions for design verification.