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E159708
B-15
B: Three-Phase Power Measurement
Electro
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Figure B.11 shows a current waveform with a slight amount of harmonic distortion.
The waveform is still periodic and is fluctuating at the normal 60 Hz frequency.
However, the waveform is not a smooth sinusoidal form as seen in Figure B.10.
Figure B.11: Distorted Current Waveform
The distortion observed in Figure B.11 can be modeled as the sum of several sinusoi-
dal waveforms of frequencies that are multiples of the fundamental 60 Hz frequency.
This modeling is performed by mathematically disassembling the distorted waveform
into a collection of higher frequency waveforms.
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