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:
Jun. 26, 2007
Filed:
Oct. 03, 2005
Pyeong Ki Park, Gwangju, KR;
Koji Hamaoka, Gwangju, KR;
Han Joo Yoo, Gwangju, KR;
Jeong Ho Seo, Gwangju, KR;
Hun Yub Bae, Gwangju, KR;
Yun Jeong Kim, Gwangju, KR;
Kwang Kyo OH, Gwangju, KR;
Pyeong Ki Park, Gwangju, KR;
Koji Hamaoka, Gwangju, KR;
Han Joo Yoo, Gwangju, KR;
Jeong Ho Seo, Gwangju, KR;
Hun Yub Bae, Gwangju, KR;
Yun Jeong Kim, Gwangju, KR;
Kwang Kyo Oh, Gwangju, KR;
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Abstract
A BLDC motor phase commutation method is provided, which can correctly detect phase commutation timing and position detection timing of a BLDC motor in a compressor to stabilize rotation and RPM of the compressor, thereby minimizing noise and vibration. When the BLDC motor rotates through a mechanical angle corresponding to one period, the BLDC motor operates according to a first scheme in which operation of the BLDC motor in the first phase commutation section of a period is performed in the same manner as in the last phase commutation section of a period immediately prior to the period. After the BLDC motor switches to sensorless mode, the BLDC motor operates according to a third scheme in which the first phase commutation section of a period has a time interval equal to the average of time intervals of first phase commutation sections of periods prior to the period.