{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9618558","patent":{"patent_number":"US-9618558","title":"Motor driving apparatus including life determining unit of direct-current capacitor","assignee":null,"inventors":[],"filing_date":"2016-03-16T00:00:00.000Z","publication_date":"2017-04-11T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M"],"num_claims":7,"abstract":"A motor driving apparatus includes: a voltage detecting unit for detecting a voltage of each direct-current capacitor; a current detecting unit for detecting each current inputted to or outputted from each inverter; an commanding unit for outputting a power-converting command to each inverter after each direct-current capacitor is charged and supply of direct-current power to a converter is shut off; a current integrating unit for integrating each current detected while the power-converting command is outputted; a capacity estimating unit for calculating the estimated capacity of each direct-current capacitor based on the current integration value and the voltage of the direct-current capacitor after supply of direct-current power to the converter is shut off and before the power-converting command is outputted; and a life determining unit for determining a life of each direct-current capacitor based on the initial capacity value and the estimated capacity of the direct-current capacitor."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Motor driving apparatus including life determining unit of direct-current capacitor","description":"A motor driving apparatus includes: a voltage detecting unit for detecting a voltage of each direct-current capacitor; a current detecting unit for detecting each current inputted to or outputted from","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9618558","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-9618558","citation_suggestion":"Patentable. \"Motor driving apparatus including life determining unit of direct-current capacitor\" (US-9618558). https://patentable.app/patents/US-9618558","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9618558","json":"https://patentable.app/api/llm-context/US-9618558","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:18:33.586Z"}