safe
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- Mar 28, 2009
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Why Not The Fifth Harmonic?
The Fundamental is a simple sine waveform. The Third Harmonic adds two waves located with one on either side of the Fundamental and drops the "effective" rpm by a factor of three. (from 3600 to 1200) The Seventh Harmonic adds two waves on each side of the fundamental and drops the "effective" speed by a factor of seven. (from 3600 to 514)
What about the Fifth Harmonic?
The problem with the 5th, 9th, 13th, etc Harmonics is that the peak of one of the waves ends up aligning with the Fundamental and that makes the overall peak much higher.
When you see it visually is makes perfect sense... you just can't use the Fifth Harmonic !
Not only this, but for Six Phase power the Fifth Harmonic actually SPINS BACKWARDS relative to the Fundamental and so in effect it would act like a brake.
You just can't use it...
The Fundamental is a simple sine waveform. The Third Harmonic adds two waves located with one on either side of the Fundamental and drops the "effective" rpm by a factor of three. (from 3600 to 1200) The Seventh Harmonic adds two waves on each side of the fundamental and drops the "effective" speed by a factor of seven. (from 3600 to 514)
What about the Fifth Harmonic?
The problem with the 5th, 9th, 13th, etc Harmonics is that the peak of one of the waves ends up aligning with the Fundamental and that makes the overall peak much higher.
When you see it visually is makes perfect sense... you just can't use the Fifth Harmonic !
Not only this, but for Six Phase power the Fifth Harmonic actually SPINS BACKWARDS relative to the Fundamental and so in effect it would act like a brake.
You just can't use it...
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