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특허 상세정보

Method and apparatus for applying a commutation advance automatically in a brushless DC motor

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H02P-006/18   
미국특허분류(USC) 318/400.34; 318/400.01; 318/400.32; 318/400.35; 318/400.36; 318/599; 318/459; 318/400.14; 318/721; 388/901; 388/909; 388/928.1
출원번호 US-0108725 (2011-05-16)
등록번호 US-8680799 (2014-03-25)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Cooper, Alan A. R.
인용정보 피인용 횟수 : 0  인용 특허 : 15
초록

To achieve peak acoustic and power performance, the coil or applied current should be in phase or substantially aligned with the back electromotive force (back-EMF) voltage. However, there are generally phase differences between the applied current and back-EMF voltage that are induced by the impedance of the brushless DC motor (which can vary based on conditions, such as temperature and motor speed). Traditionally, compensation for these phase differences was provided manually and on an as-needed basis. Here, however, a system and method are provided th...

대표
청구항

1. A method for reducing acoustic noise in a brushless direct current (DC) motor, the method comprising: applying a drive signal to a drive circuit;determining a zero-crossing for a back electromotive force (back-EMF) voltage for the brushless DC motor based at least in part on the drive signal;measuring an applied current applied to the brushless DC motor by the driver in response to the drive signal;comparing the zero-crossing for the back-EMF voltage to a zero-crossing for the applied current; andincrementally adjusting the drive signal so as to subst...

이 특허에 인용된 특허 (15)

  1. Cassat Alain M. (Pully CHX) Cardoletti Laurent (Montreux CHX). Closed loop control of a brushless DC motor at nominal speed. USP1993095245256.
  2. Lawler Jack Steward ; Bailey John Milton. Constant power speed range extension of surface mounted PM motors. USP2001056236179.
  3. Bhaumik,Jaydip; Brenden,Jason P.; Dahlberg,Dames A.; Peterson,Michael; Wilson,Ross. Digital spindle control architecture. USP2006047034478.
  4. Cameron Scott W. (Milpitas CA). Method and apparatus for starting a sensorless polyphase DC motor in dual-coil mode and switching to single coil mode at. USP1995105455885.
  5. Cameron Scott W. (Phoenix AZ). Method and apparatus for starting polyphase dc motor. USP1996115572097.
  6. Tang Shi-Ming (Puchon-shi KRX) Lee Sang-Yong (Puchon-shi KRX). Model reference following commutation circuit and adjusting method thereof. USP1997045616996.
  7. Moreira Julio C. (St. Joseph MI). Motor control for brushless permanent magnet using only three wires. USP1996015481166.
  8. Fukamizu, Shingo; Yamamoto, Yasunori; Kuroshima, Shinichi. Motor drive device. USP2009057531976.
  9. Yasohara, Masahiro. Motor driver. USP2003016512343.
  10. Kurosawa, Minoru; Kokami, Yasuhiko. Motor driving apparatus and method for control of motor revolution. USP2011037915844.
  11. Allison, III, Rex L.. Sample and hold time stamp for sensing zero crossing of back elecromotive force in 3-phase brushless DC motors. USP2013018358093.
  12. Gontowski, Jr., Walter S.. Sensorless motor driver with BEMF mask extender. USP2003016504328.
  13. Menegoli Paolo. Simple back emf reconstruction in pulse width modulation (PWM) mode. USP2000126163120.
  14. Paolo Menegoli ; Ender Tunc Eroglu ; Whitney Hui Li. System and method for optimizing torque in a polyphase disk drive motor. USP2002126498446.
  15. Rizzo, Richard. Wild frequency avionic refrigeration system and controller therefor. USP2010057721564.