Harmonics Analysis & THD with MATLAB



What you’ll learn

  • What is Harmonics & why it is important to know about it?

  • What is Total Harmonics Distortion (THD)?

  • What is role of Fourier Analysis?

  • How to calculate Fourier coefficients & THD?

  • How to plot the harmonics spectrum of different waveform?

  • How to use the MATLAB’s tool to analyse the waveform for power quality

  • How to obtain THD & harmonics spectrum

  • Analysis of Harmonics & issues associated with Inverter: DC to AC Converter

  • Analysis of Harmonics & issues associated with Rectifier: AC to DC Converter

  • Analysis of Harmonics & issues associated with Regulator: AC to AC Converter


  • Basic knowledge of integration is required to understand Fourier analysis.

  • Basic knowledge of MATLAB simulation is required to use THD function and FFT tool of MATLAB covered in last section.

Hello Everyone!

Wishing you a have happy and healthy life. Stay safe, stay blessed.

As I experienced that many students found difficulties in understanding harmonics analysis and total harmonics distortion. This is due to fact that most engineering students are go through these important topic as a only part of their other main subject like inverter or power quality analysis. That’s why I decided to built a course on particular topic “Harmonics Analysis & THD”. You may like to check the detail about this course.


This course explains harmonics, requirement of fourier analysis & total harmonics distortion in detail. Main aim of this course is to help student for clearing all doubt about harmonics & its calculation methods.

First section covers method to obtain THD and harmonics spectrum of different waveform. It explains important of harmonics analysis and role of Fourier series in obtaining harmonics spectrum.

Second includes MATLAB programming & simulation tools to obtain THD as well as harmonics spectrum of different waveform. It explains about using FFT toolbox and THD function of MATLAB

Third section analyze harmonics profile of all kinds of power electronics converters and explains how it produces harmonics at different stages and effect how it affects load side as well as supply side.

Who this course is for:

  • This course is suitable for the diploma or degree students of electrical engineering, power electronics engineering, electronics engineering & power engineering.
  • This course is suitable for the person working with power electronics inverters or power quality related projects or industries.
  • This course is recommended for those who are going to use power quality analyser in their project.
  • This course is must for those who are interested in inverter or power quality related projects & dissertation works.
  • This course is useful for Mtech, ME, PG, Phd students of Electrical & Power Electronics Engineering

Dr. Jignesh Makwana has started their academic career in 2004. He received Phd degree in Electrical Engineering with the specialization in power electronics & drive from Indian Institute of Technology Roorkee in 2013. His interest and enthusiasm for teaching & learning, research & development and innovations in all fields lead him as good contributors in academic & industrial field.  He has vast academic experience with various reputed universities & institutes.  Dr. Jignesh Makwana has international exposure of visiting several countries and representing expertise in field of power electronics converters, artificial intelligence, renewable energy, etc. He published numbers of research papers in international and national conferences and reputed journals. He guided numbers of UG and PG students for their dissertation and project works. He is former head of the department of Electrical Engineering Department at Marwadi University, Rajkot, Gujarat. He is founder & director of RhyMak Electronics which involves in design and development of electrical vehicles & accessories and electronic products. He provided consultancy service to several industries for design of power electronics and special motors. Hi is also founder and active online instructor at Rhyni – Tech Skills & Fundamentals, hub of online self paced courses, with 3500+ students from 120+ countries.

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Author: Ho Quang Dai

I am Ho Quang Dai, from Vietnam – A country that loves peace. I share completely free courses from major academic websites around the world. Hope to bring free knowledge to everyone who can’t afford to buy

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