{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9742301","patent":{"patent_number":"US-9742301","title":"Electric power conversion device and control circuit determining occurrence of an abnormality state","assignee":null,"inventors":[],"filing_date":"2014-04-04T00:00:00.000Z","publication_date":"2017-08-22T00:00:00.000Z","cpc_codes":["H02M"],"num_claims":6,"abstract":"An electric power conversion device has a transformer, a DC-AC conversion circuit, an AC-DC conversion circuit and a control circuit. The control circuit calculates an input current instruction value (Iref) based on a difference value (ΔV) between an output voltage (Vout) of the AC-DC conversion circuit and an output voltage instruction value (Vref). A comparator compares an input current (Iin) of the DC-AC conversion circuit with the value (Iref). The DC-AC conversion circuit is controlled by the comparison result of the comparator. The control circuit correctly determines an occurrence of an abnormality state of the electric power conversion device based on the operation state of the comparator, the difference value (ΔV) between the output voltage (Vout) of the AC-DC conversion circuit and the output voltage instruction value (Vref), and the input voltage (Vin) of the DC-AC conversion circuit without using any output current of the AC-DC conversion circuit."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Electric power conversion device and control circuit determining occurrence of an abnormality state","description":"An electric power conversion device has a transformer, a DC-AC conversion circuit, an AC-DC conversion circuit and a control circuit. The control circuit calculates an input current instruction value ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9742301","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-9742301","citation_suggestion":"Patentable. \"Electric power conversion device and control circuit determining occurrence of an abnormality state\" (US-9742301). https://patentable.app/patents/US-9742301","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9742301","json":"https://patentable.app/api/llm-context/US-9742301","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:04:57.657Z"}