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- What exactly are harmonics and how do they appear?
"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 accept the fact that any physically realizable continuous-time signal can be represented as an infinite sum of sinusoids (that's a Fourier series) Thus, any sinusoidal signal doesn't have harmonics, or it
- How do I calculate THD? - Electrical Engineering Stack Exchange
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? Is it going to vary dramatically with the pulse widths? Or will there be certain simplifying assumptions I can make?
- Filter design according to harmonics in an inverter
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 harmonics in
- Transformer Harmonics - Electrical Engineering Stack Exchange
The current harmonic components (caused by non-linear loads) generate these voltage drops The voltage at the transformer terminals then becomes the original voltage added to these voltage drops (which contains harmonics), becoming a "distorted signal", so to speak
- failure - Harmonics are bad. . . But how bad? - Electrical Engineering . . .
In power systems, there are rules and regulations stating what levels of harmonic distortion is acceptable One example I've seen for voltage distortion is: THD lt; 8%, single component harmonic
- How do I simulate an RF mixer in PSS or harmomic balance with an . . .
However, I have severe trouble getting a harmonic balance or periodic-steady-state simulation to succeed with sensible results When I use the shooting engine, PSS fails to converge with messages such as the following: Conv norm = 44 7e+03, max dV(I28 net8) = 11 032 V, took 14 92 s
- Why harmonic distortion and not at other frequencies?
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 simply point me at a textbook reading that explains it, if that's easier! I understand that non-linear loads can create distortion
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