{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9762171","patent":{"patent_number":"US-9762171","title":"Motor drive device having insulation resistance detecting function and method of detecting insulation resistance of motors","assignee":null,"inventors":[],"filing_date":"2015-03-04T00:00:00.000Z","publication_date":"2017-09-12T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M"],"num_claims":2,"abstract":"A motor drive device includes: a converter; a power supply; a plurality of inverter units configured to convert DC to AC to drive a plurality of motors by upper arm switching elements connected between a capacitor and motor coils and lower arm switching elements connected between the capacitor and motor coils; a second switch configured to connect the capacitor to the earth; a current detector configured to measure current flowing between the capacitor and the earth; a voltage detector configured to measure the voltage across the capacitor; and, an insulation resistance detector configured to detect insulation resistance of the multiple motors based on the current and voltage measured in a condition that the switching element to which the motor coil to be measured is connected is turned on and the switching elements to which a motor coil other than the target for measurement is connected are turned off."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Motor drive device having insulation resistance detecting function and method of detecting insulation resistance of motors","description":"A motor drive device includes: a converter; a power supply; a plurality of inverter units configured to convert DC to AC to drive a plurality of motors by upper arm switching elements connected betwee","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9762171","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-9762171","citation_suggestion":"Patentable. \"Motor drive device having insulation resistance detecting function and method of detecting insulation resistance of motors\" (US-9762171). https://patentable.app/patents/US-9762171","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9762171","json":"https://patentable.app/api/llm-context/US-9762171","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:04:46.678Z"}