{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11474133","patent":{"patent_number":"US-11474133","title":"Insulation impedance detection circuit and insulation impedance detection method of photovoltaic inverter system","assignee":null,"inventors":[],"filing_date":"2020-09-21T00:00:00.000Z","publication_date":"2022-10-18T00:00:00.000Z","cpc_codes":["H02J","H02M","H02M","H02M","H02M","H02M","H02J"],"num_claims":12,"abstract":"It is disclosed an insulation impedance detection circuit and detection method of a photovoltaic inverter system. The photovoltaic inverter system includes one or more input circuits and an inverter circuit, each of the input circuit electrically coupled to the inverter circuit through a positive bus and a negative bus, with a first equivalent impedance Rp between the positive bus and a protective earth point and a second equivalent impedance Rn between the negative bus and the protective earth point. The detection circuit includes: a bus voltage sampling circuit coupled to the positive bus and the negative bus for generating a first bus voltage and a second bus voltage; a protective earth voltage sampling circuit coupled to the protective earth point for generating a first protective earth voltage and a second protective earth voltage; and a controller for calculating an equivalent insulation impedance."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Insulation impedance detection circuit and insulation impedance detection method of photovoltaic inverter system","description":"It is disclosed an insulation impedance detection circuit and detection method of a photovoltaic inverter system. The photovoltaic inverter system includes one or more input circuits and an inverter c","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11474133","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-11474133","citation_suggestion":"Patentable. \"Insulation impedance detection circuit and insulation impedance detection method of photovoltaic inverter system\" (US-11474133). https://patentable.app/patents/US-11474133","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11474133","json":"https://patentable.app/api/llm-context/US-11474133","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T11:51:23.822Z"}