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Harmonics and Inverters

COURSE NO: E04-050
Harmonics and Inverters
Course Highlights

This online engineering PDH course provides basic information on inverter types, PWM, micro and mini non-linear loads and harmonic filtering.


Static UPS are almost perfect electric generators. They are highly reliable and, by nature, ensure an uninterrupted power supply. Regarding its electrical features, the inverter possesses characteristics superior to those of the mains, in terms of frequency and voltage stability. The only doubtful feature is its ability to provide a sinusoidal voltage regardless of the shape of the current drawn by the load.


The objective of this course is to elaborate on this topic and to show that modern inverters are excellent generators of sinusoidal voltage even when they supply non-linear loads. This is considered normal since UPS devices are designed and very often utilized to supply computer/microprocessor systems which draw non-sinusoidal currents.


This course is applicable to electrical engineers who are interested in learning about inverter technology and its impact on the quality of electrical energy, especially harmonics.
Learning Objectives

This continuing education course is intended to provide you with the following specific knowledge and skills:

  • Understanding the relationship between current and voltage distortions
  • Learning about inverter operating principles
  • Gaining a general overview of the different inverter types
  • Understanding inverters with PWM and appropriate regulation
  • Providing a general description on micro and mini-computer loads
  • Learning about the filtering of harmonics
Course Document
In this course, you need to review the course document titled, “Harmonics and Inverters” which is prepared by Velimir Lackovic, Char. Eng.
To view, print and study the course document, please click on the following link(s):
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of twenty (20) questions to earn 4 PDH credits.
The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: