Active Harmonic Filter for VFD Systems Modern factories use more variable frequency drive equipment than before. A variable frequency drive helps control motor speed, reduce energy waste, and improve process control. But when many VFD systems operate in the same electrical network, VFD harmonics can become a serious power quality problem. VFD harmonics create harmonic distortion in the current wav...
Active Harmonic Filter for Welding Machines Welding machines are common in factories, workshops, steel plants, automotive production, shipyards, and metal processing sites. They are useful machines, but they can create serious power quality problems. The main issue is welding machine harmonics. Modern welding machines often use power electronic converters. These converters do not draw current in a...
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