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Image of a Variable Frequency Drive (VFD) and its components. The VFD has a human machine interface, or display, control buttons, power supply terminals, and control board terminals.
Image of a Variable Frequency Drive (VFD) and its components. The VFD has a human machine interface, or display, control buttons, power supply terminals, and control board terminals.

Variable Frequency Drive (VFD) Basics

The THORS Variable Frequency Drive (VFD) Basics course is relevant for learners who are new to the industry, as well as experienced learners that require a deeper knowledge of the Variable Frequency Drives (VFDs). Ready to take the next step? Explore the course details and see everything we’ve packed into this program!

Learning Hours: 2

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Course Description

The THORS Variable Frequency Drive Basics course is relevant for learners who are new to the industry, as well as experienced learners that require a deeper knowledge of the Variable Frequency Drives (VFDs). The course explores the major components and types of VFDs and examines how the VFDs control the speed and directional movement of the motor effortlessly.

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Who will benefit from this Variable Frequency Drive (VFD) course?

Learners who are new to the industry, as well as experienced learners that require a deeper knowledge of the Variable Frequency Drives (VFDs).

Course Classification

This manufacturing course by THORS eLearning Solutions covers identification of key terms and understanding of key concepts.

*THORS uses the Bloom’s Taxonomy Methodology for our course development.

Certificate Awarded for Variable Frequency Drive (VFD) Basics

Example of certificate awarded upon successful completion of the course.

*upon successful completion

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Learning Objectives

  1. Identify the major components of VFDs.
  2. Examine the working principle of the major components in a VFD.
  3. Understand how the VFD functions.
  4. Recognize the electrical concepts related to a VFD.
  5. Elaborate on the different types of VFDs.
The Width Modulation (PWM) is a type of VFD that utilizes the PWM technique to supply stable voltage output.
Variable Frequency Drive (VFD) Basics course

Table of Contents

  1. VFD Components
    1. Functional Components
      1. Input Rectifier
      2. DC Bus
      3. Inverter
    2. Control Unit Components
      1. Human Machine Interface (HMI)
      2. Thermal Cooling System
      3. Power Input and Output (I/O) Terminals
      4. Control Board Terminals
      5. Option Boards
      6. VFD Nameplate
  2. VFD Operation and Types
    1. Input Power Supply
    2. VFD Working Principle
    3. Types of VFDs
      1. Classification by Input and Output Power
        1. Single-Phase Input and Single-Phase Output VFD
        2. Single-Phase Input and Three-Phase Output VFD
        3. Three-Phase Input and Three-Phase Output VFD
        4. Single-Phase and Three-Phase Input for a Three-Phase Output VFD
      2. Classification by Design
        1. Voltage Source Inverter (VSI)
        2. Current Source Inverter (CSI)
        3. Pulse Width Modulation (PWM)
      3. Classification by Size
        1. Micro-Sized VFDs
        2. Small-Sized to Medium-Sized VFDs
        3. Macro-Sized VFDs
      4. Classification by Performance
        1. Low Performance VFDs
        2. General Performance VFDs
        3. High Performance VFDs
      5. Classification by Environment
        1. National Electrical Manufacturers Association (NEMA)
        2. Ingress Protection (IP) Ratings

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