{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9735702","patent":{"patent_number":"US-9735702","title":"Operating method of full-bridge modular multilevel converter boosting AC voltages for high voltage direct current transmission","assignee":null,"inventors":[],"filing_date":"2016-03-08T00:00:00.000Z","publication_date":"2017-08-15T00:00:00.000Z","cpc_codes":["H02M","H02M","H02J"],"num_claims":8,"abstract":"Provided is an operating method of a full-bridge sub-module (FBSM)-based modular multilevel converter for HVDC transmission with AC-side voltage boosting. The peak value of the AC-side voltage is increased under a constant DC-link voltage by using FBSM's negative output voltage under steady state, wherein keeping the semiconductor's current rating constant during AC-side voltage boosting is in favor of reducing converter cost by decreasing energy interaction between the upper and lower arms in a leg, and further capacitance value of FBSM's capacitor under a constant capacitor voltage ripple, keeping the RMS value of AC-side current constant during AC-side voltage boosting can effectively improve transmission capacity of the converter while reducing converter cost, and keeping converter transmission capacity constant during AC-side voltage boosting can reduce RMS value of arm currents while reducing converter cost, thereby reducing power loss of FBSMs and improving converter efficiency."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Operating method of full-bridge modular multilevel converter boosting AC voltages for high voltage direct current transmission","description":"Provided is an operating method of a full-bridge sub-module (FBSM)-based modular multilevel converter for HVDC transmission with AC-side voltage boosting. The peak value of the AC-side voltage is incr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9735702","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9735702","citation_suggestion":"Patentable. \"Operating method of full-bridge modular multilevel converter boosting AC voltages for high voltage direct current transmission\" (US-9735702). https://patentable.app/patents/US-9735702","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9735702","json":"https://patentable.app/api/llm-context/US-9735702","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:55:45.407Z"}