Title page for etd-0718107-161603


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URN etd-0718107-161603
Author An-Li Chao
Author's Email Address No Public.
Statistics This thesis had been viewed 5564 times. Download 22 times.
Department Electrical Engineering
Year 2006
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A Sensorless Speed Control Driver for Two-phase Half Wave Brushless DC Fan Motor
Date of Defense 2007-07-13
Page Count 167
Keyword
  • Sensorless
  • Two-phase Brushless DC Fan Motor
  • P.W.M
  • Abstract The design and implementation of speed control driver, which is applied to two-phase brushless DC fan motor is presented in this thesis. In addition, motor coils current limiter, output-stage Snubber circuit, and lock detection and auto-restart circuit are added to the driver for the sake of increasing stability and robustness. Because of high frequency energizing noise and dispensable power consumption problems generated by open-loop fixed frequency PWM speed control approach, several closed-loop speed control methods with speed estimation signal feedback are adopted for improvement. Furthermore, this thesis proposes a sensorless driving control strategy to eliminate Hall sensor in rotor position detection, and similarly has closed-loop speed control methods to achieve the goal of driver cost reduction, size decrease, and good control performance.
    Advisory Committee
  • I-Chih Kao - chair
  • Yung-Chun Wu - co-chair
  • Jerome Chang - co-chair
  • Geeng-Kwei Chang - co-chair
  • Tzuen-Lih Chern - advisor
  • Files
  • etd-0718107-161603.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2007-07-18

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