The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2019
Filed:
Oct. 25, 2016
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Industry-university Cooperation Foundation Hanyang University (Iucf-hyu), Seoul, KR;
Young Jae Park, Gyeonggi-do, KR;
In Gun Kim, Gyeonggi-do, KR;
Hyun Seok Hong, Gyeonggi-do, KR;
Min Jae Kim, Gyeonggi-do, KR;
Sin-Ae Kim, Gyeonggi-do, KR;
Hyo Won Sin, Gyeonggi-do, KR;
Ju Lee, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Industry-University Cooperation Foundation Hanyang University (IUCF-HYU), Seoul, KR;
Abstract
A device and control method for driving a sensorless brushless DC (BLDC) motor, particularly related to a technology configured to increase the accuracy of detection of Zero Cross Point through a non-commutation period in a pulse width modulation (PWM) control. The device for driving a sensorless BLDC motor to switch a current applied to a stator winding based on a position of a rotor includes a three phase inverter configured to convert a DC input voltage into a three phase AC voltage and supply the three phase AC voltage to the BLDC motor; a terminal voltage detector configured to detect a three phase terminal voltage from an output terminal of the three phase inverter; and a controller configured to perform a PWM control of the terminal voltage based on a three phase back electromotive force (EMF) included in the detected terminal voltage. The PWM control includes a non-commutation control in which the switching of the current does not occur.