{'fraction_non_alphanumeric': 0.020075282308657464, 'fraction_numerical': 0.0, 'mean_word_length': 5.234375, '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}}
DC Fault Tolerant Modified Parallel Hybrid Converter with Enhanced Operating Range

This paper presents a modified parallel hybrid converter (MPHC) for HVDC applications with wide operating range and dc-fault tolerant capabilities. A novel control technique is proposed for capacitors voltage balancing of MPHC. The performance evaluations of the proposed converter and its control are carried out using PSCAD/EMTDC for both under- and overmodulation index (MI) range and also for an HVDC system. Two methods are proposed to make the MPHC tolerant to dc fault. The results obtained confirm the superior performance of the proposed converter over the existing ones. The capacitor size design methodology, loss calculation of the converter and self-excited pre-charging mechanism are also presented.