{'fraction_non_alphanumeric': 0.018244013683010263, 'fraction_numerical': 0.0, 'mean_word_length': 5.753846153846154, '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}}
A new technique for capacitor balancing of three-level flying-capacitor multilevel inverter

Topologically flying capacitor multilevel configuration is one of the basic versions and this has been widely researched. However, topological simplicity cannot be fully exploited due to the capacitor balancing issues. This paper proposes a simple open loop control strategy for balancing the voltages across the capacitors. Three-level flying-capacitor multilevel inverter is considered for the investigation. Level doubling network principle ensures capacitor balancing without any closed-loop algorithm or any extra hardware. The study is also extended to equalize device utilization and reduce floating-capacitor rating. The controller is extensively simulated using MATLAB/Simulink. Experimental results from a laboratory prototype confirm the usefulness of the proposed concept.