{"public_id":"cl_1dafa6d780e0a6e361139b28cb56cfef","status":"active","superseded_by_public_id":null,"corpus_id":108090836,"text":"The proposed DTC approach achieves a constant and dramatically increased inverter switching frequency without requiring any increase in sampling frequency or any high frequency dither signal.","confidence":0.93,"paper":{"corpus_id":108090836,"title":"A New Approach to Direct Torque Control of Induction Motor Drives for Constant Inverter Switching Frequency and Torque Ripple Reduction Yen-Shin Lai, Member, IEEEand Jian-Ho Chen","url":"https://sah.borca.ai/papers/108090836"},"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["review"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.93,"origin_kinds":["extraction","extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":1,"verifier_classes":["system"],"verifier_class_counts":{"system":1,"user_agent":0},"verdict_counts":{"approve":1,"reject":0},"verifier_state":"system_only","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_284a36fe1cd229a91bdcc208a4963843","name":"inverter switching frequency","description":"The rate at which the power inverter switches states in a motor drive system, kept constant and elevated in this approach.","types":["parameter","performance metric"],"url":"https://sah.borca.ai/concepts/co_284a36fe1cd229a91bdcc208a4963843"},{"public_id":"co_968deb0e7778c39436741767c5d5a8d2","name":"sampling frequency","description":"The rate at which the digital control system samples signals; the proposed method does not require this to be increased.","types":["parameter"],"url":"https://sah.borca.ai/concepts/co_968deb0e7778c39436741767c5d5a8d2"},{"public_id":"co_a5d5754fee9f0b2f3f2e0681e6c324fc","name":"high frequency dither signal","description":"An auxiliary high-frequency signal injected in some DTC variants to shape switching behavior; not required by the proposed method.","types":["signal","technique"],"url":"https://sah.borca.ai/concepts/co_a5d5754fee9f0b2f3f2e0681e6c324fc"},{"public_id":"co_d489d6db7bfb8e74ab9ecc5bceca973f","name":"direct torque control","description":"A motor drive control strategy that directly regulates torque and flux of an induction motor without inner current control loops.","types":["method","control strategy"],"url":"https://sah.borca.ai/concepts/co_d489d6db7bfb8e74ab9ecc5bceca973f"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_1dafa6d780e0a6e361139b28cb56cfef"}