go to the Capacitors and filters product page Anonymous asked on Jan 28th, 2015 in Capacitors and filters

What is the difference between ABB passive filters and ABB active filters and how are they working?

Kurt Schipman, Global Product Marketing Manager Capacitors and filters

ABB's answer

Passive filters consist of passive components (capacitors, reactors …) that create a low impedence path. ABB active filters (AHFs) use active components (semiconductors) to filter the load harmonics. An active filter injects harmonic into the network which are the same in magnitude but opposite in phase (180 deg out of phase) of the load harmonics thereby cancelling them. It results in a clean line current. For LV networks that have typically dynamic load patterns, ABB active filters are a better choice as they adapt to the load automatically and can grow with the installation.

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  • Kurt Schipman

    Kurt Schipman

    Global Product Marketing Manager Capacitors and filters

    High Voltage Products

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