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Are 18 pulse drives a common harmonic control solution vs drive line filters?

There are pros/cons to both solutions. A drive Line Reactor has advantages in cost, moderate harmonic reduction, and protection for AFD. Disadvantages are may require larger enclosure, harmonic reduction may not be sufficient, possible voltage drop issues and produces heat. In regard to a 18 pulse drive, this tends to be the most costly way to reduce harmonics, much larger footprint, increased losses, and at light loads draws unbalanced current.
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