{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11489490","patent":{"patent_number":"US-11489490","title":"Arc fault detection method for photovoltaic system based on adaptive kernel function and instantaneous frequency estimation","assignee":null,"inventors":[],"filing_date":"2018-12-29T00:00:00.000Z","publication_date":"2022-11-01T00:00:00.000Z","cpc_codes":["G05B","G05B","G06N","G06N","G06N"],"num_claims":9,"abstract":"An arc fault detection method for a photovoltaic system based on an adaptive kernel function and instantaneous frequency estimation includes steps of: sampling signal xt in a time window length of TNCT and obtaining an iterative time-frequency diagram of xt by nonlinear chirplet transform; extracting detection variables based on frequency component in the selected iterative time-frequency diagram to determine a moment when spectrum energy increases; when the moment is found, obtaining a matrix distribution form of the xt in time-frequency domain obtained by the adaptive optimum kernel time-frequency representation, and processing the matrix with sum of squares in a time dimension to obtain a column vector; processing each selected frequency bands with integration operation in a frequency dimension to obtain multiple detection variable values as inputs of a well-trained Naive Bayes model."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Arc fault detection method for photovoltaic system based on adaptive kernel function and instantaneous frequency estimation","description":"An arc fault detection method for a photovoltaic system based on an adaptive kernel function and instantaneous frequency estimation includes steps of: sampling signal xt in a time window length of TNC","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11489490","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-11489490","citation_suggestion":"Patentable. \"Arc fault detection method for photovoltaic system based on adaptive kernel function and instantaneous frequency estimation\" (US-11489490). https://patentable.app/patents/US-11489490","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11489490","json":"https://patentable.app/api/llm-context/US-11489490","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T09:41:22.933Z"}