{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9627923","patent":{"patent_number":"US-9627923","title":"Apparatus and methods for backfeed detection in and control of uninterruptible power systems","assignee":null,"inventors":[],"filing_date":"2013-07-19T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H02J","H02J","H02J"],"num_claims":18,"abstract":"An apparatus and method for backfeed detection in, and control of, an uninterruptible power system is disclosed. An adaptive controller in an uninterruptible power system enables delivery of power from a second, backup, power source, to loads connected to an output of the system, when a first, primary, input source is detected to be in a fault condition. Subsequent to enabling the second power source, and within a time interval that is less than one AC period following the detection of the input fault, the controller may sense and measure a backfeed of energy from the second source to the first source and may adapt a subsequent fault response based upon the measurement of the backfeed. Adapting the subsequent response may comprise adapting a response to a fault at the output. The subsequent response may comprise disabling or enabling delivery of energy from the second source."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and methods for backfeed detection in and control of uninterruptible power systems","description":"An apparatus and method for backfeed detection in, and control of, an uninterruptible power system is disclosed. An adaptive controller in an uninterruptible power system enables delivery of power fro","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9627923","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-9627923","citation_suggestion":"Patentable. \"Apparatus and methods for backfeed detection in and control of uninterruptible power systems\" (US-9627923). https://patentable.app/patents/US-9627923","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9627923","json":"https://patentable.app/api/llm-context/US-9627923","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:05:43.010Z"}