Active Harmonic Conditioners

This Application Note discusses the use of active filters to reduce harmonic currents in installations. Active filters work by providing the harmonic current required by the load instead of it being drawn from the supply.

The major advantage of an active filter is that, because it responds only to downstream current harmonics, they can be distributed around an installation without cross interference. They can be programmed to respond to selected or all harmonic frequencies and quickly adapt to changes in load profile.

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