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This course accepted in:

 

• Alabama (P.E.)

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Abbreviations:

AOP-Areas of Practice

LAR-Laws & Rules

P.E.-Professional Engineers

 

Explore all PDH CEU CPC CPD and Webinars for Engineers

Variable Frequency Drives

Course No. E-3014

Credit: 3 PDH

Course Fee: $86.85 Purchase course

Subject Matter Expert: Robert J. Scoff, P.E.

 

Overview

This course shows how the various parts of a Variable Frequency Drive (VFD) work and how they are integrated to make an operating system. It starts with a review of AC and DC theory that is applicable to the way that an Inverter (another name given to VFD’s) works. An explanation is given of how the various solid state electronic components work. This course then shows how a three phase constant frequency (60 hertz in the USA) input voltage is turned into a DC voltage, and then the DC voltage is turned into a three phase, variable frequency, variable voltage output. There are many pictures that give a real feeling of how these devices really operate. A historical overview is also presented to show the development of the technology of VFD’s.

The course was designed for electrical engineers as well as engineers of other disciplines. Electrical engineers will have a deeper understanding of how basic principles and basic devices are put together to make this versatile machine work. This will help them as they apply it to various projects. Engineers in other disciplines will also find it useful to have an understanding of how variable frequency drives work, as they work with mechanical, chemical, and building systems. The more that we, as engineers, understand how things in other disciplines work, the better that we can do our specific jobs.

There is very little math involved in this course, although it always helps to understand basic algebra. This course is built on understanding the parts of an inverter, and how they work together to make an operating system.

The student must take a multiple choice quiz consisting of twenty questions at the end of the course to obtain PDH credit.

 

Specific Knowledge or Skill Obtained

This course teaches the following specific knowledge and skills:

  • Some history of VFD’s.
  • Definitions of applicable electrical terms.
  • Learn the operation of the solid state devices that are used in inverters.
  • Learn how the various parts of an Inverter work together to generate a variable frequency, variable voltage signal from a 60 Hertz input voltage.
  • Learn how the controls work to make an inverter work.
  • Learn how to handle a few of the problems encountered when VFD’s are applied in the work world.

 

Course

Click on the following link to the PDF document to review the course material before taking the quiz for credit.

Variable Frequency Drives

 

Having trouble downloading the PDF file?

If clicking the link does not bring you to the PDF file, then right-click the link. Click "Save Target As" and save on your desktop. To view the file, double-click the icon on your desktop and return to this page to take the quiz. You may want to bookmark this page for your convenience. If you have questions, Live Support Chat can help.

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To receive PDH credit for this course, you must pass a multiple-choice quiz. Click the button below to Purchase Course and Take Quiz. To take the quiz, your computer must be set to accept cookies. See how to check your cookie settings.

 

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