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Introduction to Electric Motors

Learn about the origin of modern day electric motors. Also learn about different types of electric motors such as DC motors, stepper motors, servo motors etc. Find out about the best practices to keep the motors well maintained for optimum performance. Prepared by Kollmorgen (http://www.kollmorgen.com/en-us/home/)

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Introduction to Electric Motors

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  1. Introduction to Electric Motors

  2. What is an Electric Motor? An electric motor is an electromagnetic device that converts electrical energy into mechanical energy The first electric motor was invented by William Sturgeon in 1832 The first commercially successful electric motor was created in 1873 Today, electric motors can be found in a variety of appliances including industrial fans, blowers, machine tools, house hold appliance etc.

  3. Types of Motors • DC Motors: An electric motor that runs on direct current electricity is known as a DC motor DC motors can run directly on rechargeable batteries making them more portable to use Two main types of DC motors are Brush DC & Brushless DC motor Brush DC motor uses and internal powers supply with stationary magnets, while Brushless DC motors use rotation permanent magnet

  4. Types of Motors • Stepper Motors A stepper motor is a brushless DC motor that drives full rotation into multiple steps The motor's position can move and hold at one of these steps without any feedback sensor Stepper motors are used in Floppy disk drives, plotters, CD ROMs, scanners and many other appliances.

  5. Types of Motors • Servo Motors Servo motors are used in servomechanisms. A Servomechanism is an automatic device that uses error sensing to improve machine performance Servo Motors are capable of producing 8,000 to 70,000 RPMs for high torque requirements in special design applications

  6. Tips for Efficient Motor Operation • Properly lubricate moving parts • Keep motor couplings properly aligned • Properly align tension belts while installing the motor • Keep bearings clean and lubricated • Check proper supply voltage

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