{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10511220","patent":{"patent_number":"US-10511220","title":"Control device for active filter","assignee":null,"inventors":[],"filing_date":"2017-06-21T00:00:00.000Z","publication_date":"2019-12-17T00:00:00.000Z","cpc_codes":["H02J","H02M","H02J","H02J","H02J","H02M","H02M","H02M","H02M","H02M","H02M"],"num_claims":5,"abstract":"Disclosed is a control device controlling an operation of an active filter which is connected in parallel with a load at an installation point (P) with respect to an AC power source and which supplies a compensation current (Ic) to the installation point (P) so as to compensate for a harmonic component of a load current (Io) flowing through the load. The control device includes: a dq converter converting the load current (Io) into a component of a d-axis current and a component of a q-axis current; a high-pass filter extracting a harmonic component from at least the component of the q-axis current output from the dq converter; a multiplier outputting a result obtained by multiplying a component of a d-axis current output from the high-pass filter by a compensation rate (Kd) as a current command value (id*); and a multiplier outputting a result obtained by multiplying the component of the q-axis current output from the dq converter or a component of a q-axis current output from the high-pass filter by a compensation rate (Kq) as a current command value (iq*). The compensation rate (Kq) of the q-axis current in the multipliers is adjustable."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Control device for active filter","description":"Disclosed is a control device controlling an operation of an active filter which is connected in parallel with a load at an installation point (P) with respect to an AC power source and which supplies","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10511220","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-10511220","citation_suggestion":"Patentable. \"Control device for active filter\" (US-10511220). https://patentable.app/patents/US-10511220","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10511220","json":"https://patentable.app/api/llm-context/US-10511220","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T07:06:16.713Z"}