{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11233420","patent":{"patent_number":"US-11233420","title":"Uninterruptible power supply apparatus","assignee":null,"inventors":[],"filing_date":"2017-10-18T00:00:00.000Z","publication_date":"2022-01-25T00:00:00.000Z","cpc_codes":["H02J","H02M","H02J","H02J","H02M","H02M","H02M","H02M","H02M","H02M","H02M"],"num_claims":8,"abstract":"In an uninterruptible power supply apparatus, a bidirectional chopper (5) includes a first IGBT (Q1) for storing DC power generated by a converter (2) into a battery (22) and a second IGBT (Q2) for supplying DC power of the battery to an inverter (8). A control circuit (7) drives the first IGBT at a first frequency (fH) in a sound state of a commercial AC power supply (21) and drives the second IGBT at a second frequency (fL) lower than the first frequency in response to occurrence of a power failure of the commercial AC power supply. Switching loss produced in the second IGBT thus can be reduced."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Uninterruptible power supply apparatus","description":"In an uninterruptible power supply apparatus, a bidirectional chopper (5) includes a first IGBT (Q1) for storing DC power generated by a converter (2) into a battery (22) and a second IGBT (Q2) for su","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11233420","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-11233420","citation_suggestion":"Patentable. \"Uninterruptible power supply apparatus\" (US-11233420). https://patentable.app/patents/US-11233420","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11233420","json":"https://patentable.app/api/llm-context/US-11233420","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:29:18.536Z"}