{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9712043","patent":{"patent_number":"US-9712043","title":"Apparatus and method for controlling overcurrent of grid-connected inverter due to abnormal grid voltage","assignee":null,"inventors":[],"filing_date":"2014-06-20T00:00:00.000Z","publication_date":"2017-07-18T00:00:00.000Z","cpc_codes":["H02M","H02M"],"num_claims":4,"abstract":"An apparatus for controlling overcurrent of a grid-connected inverter due to an abnormal grid voltage includes a grid voltage sensor configured to sense a grid voltage according to an output current of the grid-connected inverter, a voltage variation calculator configured to calculate a D-axis voltage and a Q-axis voltage of the grid voltage to obtain variation values of the D-axis voltage and the Q-axis voltage, and an output current controller configured to determine whether at least one of the D-axis voltage variation value and the Q-axis voltage variation value exceeds a set value of the grid voltage variation, and decrease the output current by a predetermined value when one of the D-axis voltage variation value and the Q-axis voltage variation value exceeds the set value of the grid voltage variation."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and method for controlling overcurrent of grid-connected inverter due to abnormal grid voltage","description":"An apparatus for controlling overcurrent of a grid-connected inverter due to an abnormal grid voltage includes a grid voltage sensor configured to sense a grid voltage according to an output current o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9712043","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-9712043","citation_suggestion":"Patentable. \"Apparatus and method for controlling overcurrent of grid-connected inverter due to abnormal grid voltage\" (US-9712043). https://patentable.app/patents/US-9712043","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9712043","json":"https://patentable.app/api/llm-context/US-9712043","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:59:26.131Z"}