What exactly are harmonics and how do they "appear"?
May 21, 2012 · "how are harmonics generated? The signal is just "on" or "off", how are there first, third, and fifth harmonics and why do they get weaker?" // Although not a satisfactory answer, you could …
How do I calculate THD? - Electrical Engineering Stack Exchange
Apr 24, 2024 · I want to calculate the total harmonic distortion of the signal using this graph and formula. The formula is taken from this page: Calculating harmonic distortion First Question: So my problem is to
filter - What is the harmonic content of a PWM signal? - Electrical ...
To properly design a filter for this application to hit a specific harmonic distortion target, I need to know the harmonic content of the PWM signal. How can I predict what that harmonic content is?
amplifier - Calculate total harmonic distortion - Electrical ...
May 18, 2020 · Calculate total harmonic distortion Ask Question Asked 5 years, 7 months ago Modified 2 years, 1 month ago
power electronics - Electrical Engineering Stack Exchange
May 8, 2025 · I'm working on a project involving multiple non-linear electrical loads, and I want to estimate the total THDi (Total Harmonic Distortion of Current) and, if possible, THDv (Total Harmonic …
Why harmonic distortion and not at other frequencies?
Apr 22, 2020 · In understanding harmonic distortion, one piece of the puzzle that is missing for me is: - why does the distortion manifest at harmonic frequencies and not other frequencies. Feel free to …
SMPS: What is current mode instability (aka “sub-harmonic oscillation”)?
Oct 22, 2014 · Sub-harmonic oscillations in current-mode-controlled converters are easily revealed through simple drawings as shown in akellyirl answer. However, it is less known that these …
Filter design according to harmonics in an inverter
Apr 17, 2024 · According to the Fourier series, when AC waves of different frequencies are added to the fundamental frequency, we can obtain waves such as square and sawtooth. When we filter out the …
50/60Hz Noise Harmonics - Electrical Engineering Stack Exchange
Jun 29, 2017 · Why are only the odd harmonics of 60Hz noise visible? Most loads that generate distortion on the power line are symmetrical with respect to voltage, so they produce only odd …
Help me understand FFT and harmonic distortions - Electrical ...
Jan 9, 2015 · I'm new to FFT and harmonic distortions. I'm dealing with a power system where the phase currents are distorted. Now I don't understand the concept of FFT and why the harmonics …