Introduction

This course covers Basics of AC Drives and related products.
Upon completion of Basics of AC Drives you should be able to:
• Explain the concept of force, inertia, speed, and torque
• Explain the difference between work and power
• Describe the construction of a squirrel cage AC motor
• Identify the nameplate information of an AC motor
necessary for application to an AC Drive
• Describe the operation of a three-phase rotating magnetic
field
• Calculate synchronous speed, slip, and rotor speed
• Describe the relationship between V/Hz, torque, and
current
• Describe the basic construction and operation of a PWM
type AC drive
• Describe features and operation of the Siemens

MICROMASTER and MASTERDRIVE VC

• Describe the characteristics of constant torque, constant
horsepower, and variable torque applications
This knowledge will help you better understand customer
applications. In addition, you will be able to describe products
to customers and determine important differences between
products. You should complete Basics of Electricity before
attempting Basics of AC Drives. An understanding of many of
the concepts covered in Basics of Electricity is required for
Basics of AC Drives.