Browsing by Author "Anwar ul haq"

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    Brushless Dc Motor Controller
    (University of Management and Technology, 2013) Abdullah, Bilal; Anwar ul haq; Talat, Taimoor
    Electrical equipment often has at least one motor used to rotate or displace an object from its initial position. There are a variety of motor types available in the market, including induction motors, servomotors, DC motors (brushed and brushless), etc. Depending upon the application requirements, a particular motor can be selected. However, a current trend is that most new designs are moving towards Brushless DC motors, popularly known as BLDC motors. Brushless DC motors (BLDCM) are generated by virtually inverting the stator and rotor of simple DC motors. By removing of brushes we can eliminate many problems associated with brushes. Another advantage is the ability to produce a larger torque because of the rectangular interaction between current and flux. Classical DC motors are no doubt good and simple but inefficient in some ways. Although dc motors possess good control characteristics but their performance and applications are limited due to sparking and commutation problems. The Brushless DC (BLDC) motor is able to overcome the limitations mentioned above and satisfy the requirements of a variable speed drive. BLDC motors have many similarities to AC induction motors and brushed DC motors in terms of construction and working principles respectively. Like all other motors, BLDC motors also have a rotor and a stator.