This video is based on material from Jim Phillips Power Systems Engineering live stream course brainfiller.co...
In this video, Jim answers the question, “What Are Harmonics?”
What are harmonics and how do they get into the power system? Electrical power system harmonics are multiples of a fundamental frequency typically 60 Hz. or 50 Hz. Jim walks you through multiple harmonic wave graphs and the math of harmonics and frequency overlay and some of the distortion that can occur. Six-pulse waveform has a lot of different harmonics that make it up based on certain types of loads. Like certain types of drives, rectifiers, resulting in the input current resembling as if it’s pulsed in six separate pulses instead of a clean sine wave. Jim then goes into a diagram explanation of harmonics analysis. The way that most harmonics get into the power system is the load, if you have a load that is distorting, or pulsing, or changing the characteristic of a current, that current can be rich in harmonics.
Non-linear loads are the biggest source of harmonics that can create serious problems on an electrical system. Learn more: brainfiller.co....
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15 окт 2024