{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9812982","patent":{"patent_number":"US-9812982","title":"Method in, apparatus for, and interface arrangement between an alternating current power system and a direct current power system","assignee":null,"inventors":[],"filing_date":"2014-10-30T00:00:00.000Z","publication_date":"2017-11-07T00:00:00.000Z","cpc_codes":["H02M","G05B","H02M","H02M","H02M","H02J","H02M"],"num_claims":18,"abstract":"A method and apparatuses for handling delayed zero crossing in fault current through a circuit breaker are disclosed. An interface arrangement is configured to couple an alternating current, AC, power system with a direct current, DC, power system, or vice versa. The interface arrangement includes at least one converter for conversion of AC power to DC power, or vice versa, which includes a DC side for coupling of the converter to the DC power system and an AC side for coupling of the converter to the AC power system. A circuit breaker is arranged in a current path between the AC side of the at least one converter and the AC power system. There may be a risk of delayed zero crossing in fault current occurring in case a fault occurs in a predefined portion of the interface arrangement. If a fault is sensed to occur in the interface arrangement within the predefined portion of the interface arrangement, opening of contacts of the circuit breaker can be delayed by a selected delay time period, compared to if the fault would have been within a portion of the interface arrangement different from the predefined portion."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method in, apparatus for, and interface arrangement between an alternating current power system and a direct current power system","description":"A method and apparatuses for handling delayed zero crossing in fault current through a circuit breaker are disclosed. An interface arrangement is configured to couple an alternating current, AC, power","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9812982","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-9812982","citation_suggestion":"Patentable. \"Method in, apparatus for, and interface arrangement between an alternating current power system and a direct current power system\" (US-9812982). https://patentable.app/patents/US-9812982","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9812982","json":"https://patentable.app/api/llm-context/US-9812982","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T14:39:57.639Z"}