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суммарное действующее значение основной и последующих гармоник
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To find the total RMS value of any distorted wave, you have to take "the square root of the sum of the squares" of the RMS value of the fundamental and the series of harmonics. (admittedly it's easier to see this demonstrated than to explain it!!)
Here's the equation (The letter "I" stands for current):
[http://www.lehmanengineering.com/quiz/quiz5sol.html] |
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Тематики
- качество электрической энергии
- счетчик электроэнергии
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