{"product_id":"a-sensorless-drive-system-of-bldc-motor-analysis-simulation-and-implementation-of-a-new-sensorless-system-for-bldc-motors-with-the-120-180-degree-commutations-von-boyang-hu-yash-shrivastava-swamidoss-sathiakumar","title":"A Sensorless Drive System of BLDC Motor","description":"\u003cp\u003eTo drive the PMBLDC motor, for the conventional 120-degree commutation, the winding without phase current in each conduction interval can be considered as a sensor for back-emf detection. However, in the case of 180-degree commutation, the back-emf detection cannot be realized because all the three phases conduct current in each interval and no back-emf signals are available on stator terminals, which is the reason why the 180-degree sensorless commutation has not been considered so far. In this thesis, a novel 180-degree sensorless system for a PMBLDC motor is proposed. The position and speed information are estimated based on the back-emf signals, which are estimated from the simple sensing of the stator terminal voltage and phase current signals. Each phase of the conventional 120-degree rotates only 120 degrees with current to generate torque and waits for next excitation in the other 60 degrees without torque generated. However, each phase of the proposed 180-degree sensorless system conducts current for the entire electrical period, which produces more torque. The comparison between the 120-degree and the 180-degree sensorless system is also investigated.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783659167829\"\u003e\u003ch3\u003eAnalysis,simulation and implementation of a new sensorless system for BLDC motors with the 120\/180-degree commutations\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783659167829","offer_id":39448529698909,"sku":"9783659167829","price":59.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/a68ad26e-54ce-4501-9edb-bceee40fdaed.jpg?v=1770873861","url":"https:\/\/shop.autorenwelt.de\/products\/a-sensorless-drive-system-of-bldc-motor-analysis-simulation-and-implementation-of-a-new-sensorless-system-for-bldc-motors-with-the-120-180-degree-commutations-von-boyang-hu-yash-shrivastava-swamidoss-sathiakumar","provider":"Autorenwelt Shop","version":"1.0","type":"link"}