Lessons – Alawi Midher

Effect of Pulse width and location on SVM reverse sequence harmonics

This post may seem like a massive leap from the preceding posts, you may look at the title and ask yourself; what is SVM and whats reverse sequence. Well, you don’t need to bother with any of that. If you know… good, if you don’t that’s fine you will still benefit from the findings presented.Continue reading “Effect of Pulse width and location on SVM reverse sequence harmonics”

Effect of [Saw-tooth Vs Triangular] carriers on Modulation Harmonics

In the previous post, we developed an analytical expression which pinpoints the harmonic content produced by the PWM procedure. We can now utilize that expression to examine the two most widely used carriers; the Saw-tooth and Triangular carriers. But before we compare the Saw-tooth and Triangular carriers, I invite you to check the previous articleContinue reading “Effect of [Saw-tooth Vs Triangular] carriers on Modulation Harmonics”

Why always Saw-tooth or Triangular Carriers in PWM?

Any carrier based PWM technique is done using either a sawtooth or a triangular carrier (at least to the best of my knowledge) But ever asked yourself: Why do we restrict ourselves to these two carriers in particular? What is the criteria of which we decide that a certain carrier is suitable? To Answer theseContinue reading “Why always Saw-tooth or Triangular Carriers in PWM?”

Double Fourier Series

Joseph Fourier “invented” his famous, ingenious, and whats considered by many engineers as the most useful equation in their toolkit. However, the original Fourier series is concerned only with an equation of one variable dependency (often as a time variable). But what happens when we have a function that depends on TWO Variables to beContinue reading “Double Fourier Series”