{'fraction_non_alphanumeric': 0.01957585644371941, 'fraction_numerical': 0.0, 'mean_word_length': 5.14, '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}}
Distributed High Step-Down Ratio DC Transformer for Interconnection of MVDC and LVDC Grids

DC grid technology is regarded as a promising solution for future electric networks integrating a great amount of DC renewable energies, DC loads. For the fault ride-through requirements in the DC grid, this article proposes a new distributed high step-down ratio DC transformer, which consists of two parts. The front stage implements the capabilities of buck and fault ride-through. The latter stage implements the functions of voltage controlling and isolation. Related simulations verify the validity and feasibility.