{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9793849","patent":{"patent_number":"US-9793849","title":"Inverter apparatus for polyphase AC motor drive","assignee":null,"inventors":[],"filing_date":"2014-09-09T00:00:00.000Z","publication_date":"2017-10-17T00:00:00.000Z","cpc_codes":["B62D","H02M","H02M","H02M","H02M"],"num_claims":15,"abstract":"In view of the problem that an existing technique can detect a failure in an arm circuit for each phase and continue motor drive by only a normal phase, but a brake torque is generated due to a closed circuit of the faulty phase, an inverter apparatus for polyphase AC motor drive is provided that includes: a first power supply switching device in a power supply line to an inverter circuit; a second power supply switching device for each phase in the arm circuit of the inverter circuit, and a motor relay switching device in an output path from each phase, wherein the parasitic diodes of the first power supply switching device and second power supply switching device have directional characteristics different from each other, which prevent generation of a closed circuit."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Inverter apparatus for polyphase AC motor drive","description":"In view of the problem that an existing technique can detect a failure in an arm circuit for each phase and continue motor drive by only a normal phase, but a brake torque is generated due to a closed","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9793849","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-9793849","citation_suggestion":"Patentable. \"Inverter apparatus for polyphase AC motor drive\" (US-9793849). https://patentable.app/patents/US-9793849","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9793849","json":"https://patentable.app/api/llm-context/US-9793849","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:23:07.954Z"}