Brushless dc motor
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Brushless dc motor

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It's a reference for seminar for electrical engineering or electrical and electronics students.

It's a reference for seminar for electrical engineering or electrical and electronics students.

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Brushless dc motor Brushless dc motor Presentation Transcript

  • BRUSHLESS DC MOTOR Biplab Nayak Regd. No.- 0901321003 Branch-EEE, 7th semester Bhubaneswar Institute of Technology
  • WHAT IS BRUSHLESS DC MOTOR ? Brushless DC motors are synchronous motors which are powered by a DC electric source via an integrated inverter, which produces an AC electric signal to drive the motor.
  • HISTORY OF BRUSHLESS DC MOTOR  British scientist Michael Faraday first experimented with the idea of the electromagnetic induction motor in the early 1800’s.  During that time, DC Motors did not contain permanent magnets. Instead, they operated similar to Brush DC Motors today, in that they had current flowing through the windings of the motor. In 1837 Americans Thomas and Emily Davenport transformed Faraday’s DC Motor into one that could be used for commercial use. These DC Motors became popular in printing presses and powered machine tools.
  • EQUIVALENT BLOCK DIAGRAM OF BRUSHLESS DC MOTOR
  • ADVANTAGES OF BRUSHLESS DC MOTOR No maintenance. Much longer operating life. No risk of explosion or possibility of RF radiation due to arcing, higher efficiency, rapid response etc.
  • DISASSEMBLED VIEW OF BRUSHLESS DC MOTOR
  • CONSTRUCTION OF BRUSHLESS DC MOTOR  Brushless motors can be constructed in several different physical configurations.  In the 'conventional' configuration, the permanent magnets are part of the rotor.
  • COMPARISON OF CONVENTIONAL AND BRUSHLESS DC MOTOR
  • BRUSHLESS DC MOTOR MAY BE CONTROLLED BY  Voltage-Fed Inverter Current-Fed Inverter
  • BLOCK DIAGRAM OF VOLTAGE-FED CONTROL
  • BLOCK DIAGRAM OF CURRENT- FED CONTROL
  • IF THE BRUSHLESS DC MOTOR RUNS IN IMPROPER WAY OR STOPS RUNNING, THEN HOW CAN THIS PROBLEM BE SOLVED?
  • BRUSHLESS DC MOTORS
  • APPLICATIONS OF BRUSHLESS DC MOTOR  Instrumentation  Medical  Appliances  Automotive  Factory Automation Equipment  Aerospace  Military
  • CONCLUSION  Although Brushless DC Motors are more expensive of the same kW rating than conventional DC Motor but there are many advantages.  Brushless DC Motors can run when submerged in fluids.  Brushless DC Motor does not produce brush or commutator particles or gases as by-products of operation.
  • REFERENCE  J.B. Gupta 2011. Theory & Performance of Electrical Machines. 14th Ed. Katson Books  Dr. P.S. Bimbhra 2011. Power Electronics. 4th Ed. Khanna Publishers  http://www.anaheimautomation.com
  • THANK YOU