What Problems Can Come With VFDs?Most people that buy and use a variable frequency drive (VFD) are aware of the benefits they offer, such as speed control over their motor application or energy savings. What most people don’t know
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AHFs are inActive harmonic filters (AHFs) have gained a lot of traction in the last couple of years. In the past, high costs meant that active harmonic mitigation methods were reserved for extremely large/complex applications with
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Tensions resolved between utility company and local community by replacing soft start with VFD to correct voltage sags due to medium voltage compressor startsA large land fill energy producer in Chicago faced a 
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The problem:While VFD's provide great advantages in energy savings and increased efficiency, they are the #1 cause of electrical power system pollution. Reactors have become the most common means of reducing this pollution (or dir
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A line reactor (also referred to as a "choke") is a variable frequency drive (VFD) accessory that consists of a coil of wire that forms a magnetic field as current flows through it. This magnetic field limits the rate of rise of t
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Table of Contents
Background of Harmonics
IEEE 519 - Recommended Practices for Harmonic Control
Effects of Harmonics
Types of Harmonic Mitigation Equipment
Harmonic Mitigation Cost
Measurement Considerations
Re
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