Inverters – Operation and Maintenance (A8019)

In Electrical Engineering

Details

Learn the design and operation of inverter drives and control features provided by inverter drive systems.

Prerequisites

This lesson is designed for participants familiar with AC and DC theory, AC motor theory, electrical safety, electrical print reading, and the proper use of electrical test instruments.  Describe the procedures for setting it up. Know how to attach the leads to the system and take a Wheatstone bridge. Describe how to take a reading with a Wheatstone bridge and interpret it.  Identify the components, range.

Description

This lesson explains the design and operation of inverter drives, and describes control features provided by inverter drive systems.  This lesson provides procedures for inspecting and maintaining inverter drives, and gives explanations of common error messages.

Objectives

Inverters - Operation and Maintenance provides users with the knowledge to do the following:  State the function and parts of inverter drives. Describe the principle of operation of pam and pwm inverters.  Review the operation of a typical induction motor and explain the formula for synchronous speed.  Explain how to calculate slip percentage and how inverters compensate for slip.  Describe the three types of inverter drives and describe open-loop and closed-loop control and how flux-vector control drives work.  Explain how an inverter in a variable-torque application can conserve energy, and how an inverter drive can be used for soft-starting.  Describe environmental conditions that adversely affect inverter drivers and describe safety precautions for working with drives. Give examples of error messages associated with electrical or motor problems.  Describe a drive over temperature fault.

Contents

This lesson explains the design and operation of inverter drives, and
describes control features provided by inverter drive systems.  This
lesson provides procedures for inspecting and maintaining inverter
drives, and gives explanations of common error messages.

  • Inverters – Operation and Maintenance

Curriculum

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