{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9634586","patent":{"patent_number":"US-9634586","title":"Fail-safe apparatus for inverter","assignee":null,"inventors":[],"filing_date":"2015-03-04T00:00:00.000Z","publication_date":"2017-04-25T00:00:00.000Z","cpc_codes":["H02M","H02M"],"num_claims":9,"abstract":"There is provided a fail-safe apparatus for an inverter that can suppress the voltage of a DC power source from rising when the voltage of the DC power source becomes excessive, due to an abnormality caused in an inverter that performs driving and electric-power generation by use of a synchronous motor in which a permanent magnet is utilized as a magnetic-field magnet. The fail-safe apparatus for the inverter includes an excessive voltage detection circuit for detecting a state of excessive voltage while monitoring the voltage of the DC power source of the inverter and a drive switching circuit for switching a driving method for a semiconductor switching device between three-phase PWM driving and three-phase short-circuiting driving in accordance with the state of an excessive voltage detection circuit."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Fail-safe apparatus for inverter","description":"There is provided a fail-safe apparatus for an inverter that can suppress the voltage of a DC power source from rising when the voltage of the DC power source becomes excessive, due to an abnormality ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9634586","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-9634586","citation_suggestion":"Patentable. \"Fail-safe apparatus for inverter\" (US-9634586). https://patentable.app/patents/US-9634586","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9634586","json":"https://patentable.app/api/llm-context/US-9634586","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:15:45.047Z"}