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Chapter 1

Chapter 1. Overview of Electric Motor Drives. Energy • Electric Motors • History of Motor Control • Motor Control Methods • Electric Motor Drive Features. Energy sources include coal, nuclear power, natural gas, oil, water (hydroelectric or mechanical power), wind, and the sun. .

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Chapter 1

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  1. Chapter 1 Overview of Electric Motor Drives Energy • Electric Motors • History of Motor Control • Motor Control Methods • Electric Motor Drive Features

  2. Energy sources include coal, nuclear power, natural gas, oil, water (hydroelectric or mechanical power), wind, and the sun.

  3. Electrical energy consumption varies for different types of devices and motors.

  4. Electrical energy consumption varies for different types of devices and motors.

  5. Electric motors may use 1f AC, 3f AC, or DC power.

  6. Knife switches were the first devices used to start and stop electric motors.

  7. Manual motor starters can be used to control various types of motors.

  8. Two manual starters are required for forward and reverse operation of motors.

  9. Magnetic motor starters are used to control most types of motors. Magnetic motor starters also feature overload protection.

  10. Electric motor drives offer many motor control functions, including reduced motor speed and controlled acceleration/deceleration.

  11. Electric motor drives include built-in meters that measure and display voltage, current, power, frequency, and temperature.

  12. Motor drives include built-in monitoring and display of faults.

  13. In addition to controlling the motor speed, drives can be programmed for certain speed ranges.

  14. Drives can be programmed to allow a motor to coast to a stop or they can be programmed to apply a controlled braking force.

  15. Using an electric motor drive may save up to 70% in energy use and cost.

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