{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9793843","patent":{"patent_number":"US-9793843","title":"Control device for detecting disconnection","assignee":null,"inventors":[],"filing_date":"2012-07-20T00:00:00.000Z","publication_date":"2017-10-17T00:00:00.000Z","cpc_codes":["H02M"],"num_claims":4,"abstract":"A voltage controller generates a d-axis voltage command value and a q-axis voltage command value on the basis of a drive command signal and a three-phase current. When the state in which the absolute value of the resultant vector of the d-axis voltage command value and the q-axis voltage command value is not within a set predetermined range continues for a predetermined time or longer, a disconnection detector determines that a disconnection between a power converter and an AC motor has occurred. A gate controller transmits a gate command for turning off a switching element provided in the power converter to the power converter when the disconnection detector determines that a disconnection between the power converter and the AC motor has occurred."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Control device for detecting disconnection","description":"A voltage controller generates a d-axis voltage command value and a q-axis voltage command value on the basis of a drive command signal and a three-phase current. When the state in which the absolute ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9793843","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-9793843","citation_suggestion":"Patentable. \"Control device for detecting disconnection\" (US-9793843). https://patentable.app/patents/US-9793843","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9793843","json":"https://patentable.app/api/llm-context/US-9793843","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:35:41.840Z"}