{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9755551","patent":{"patent_number":"US-9755551","title":"Power conversion device","assignee":null,"inventors":[],"filing_date":"2014-01-06T00:00:00.000Z","publication_date":"2017-09-05T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M","H02M","H02M","H02M","H02M","H02M"],"num_claims":2,"abstract":"A power conversion device includes: a plurality of 3-level converters (31 to 35) that are multiple-connected in series to an AC power supply; and a control device (10) controlling operations of the plurality of 3-level converters (31 to 35). The control device (10) includes: a calculation unit calculating an output voltage command for the plurality of 3-level converters (31 to 35); a carrier signal generation unit generating a carrier signal; a correction unit correcting a phase of the carrier signal based on a potential variation on a DC neutral point bus (7); and a pulse width modulation control. unit delaying the phase by a prescribed amount based on the carrier signal having the phase corrected by the correction unit as a reference phase, to generate a plurality of carrier signals, and comparing the output voltage command with each of the plurality of carrier signals to generate a control command for each of the plurality of 3-level converters (31 to 35)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Power conversion device","description":"A power conversion device includes: a plurality of 3-level converters (31 to 35) that are multiple-connected in series to an AC power supply; and a control device (10) controlling operations of the pl","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9755551","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-9755551","citation_suggestion":"Patentable. \"Power conversion device\" (US-9755551). https://patentable.app/patents/US-9755551","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9755551","json":"https://patentable.app/api/llm-context/US-9755551","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:19:52.398Z"}