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  • Harmonic Drives ROI
    Harmonic Drive located in Peabody, MA is a leading manufacturer of precision gears, gearheads, servo actuators and motion control systems. The Pratt and Whitney Labmaster Universal has helped Harmonic Drive achieve the high precision they need. Accurate to 0.000002-inch (2 millionths of an inch
  • Matrix Drive Benefits for Managing Drive Harmonics
    Trap filters are a common solution for managing drive harmonics, but matrix drives can provide additional benefits for the user without the need for peripheral equipment and costs.
  • Harmonic Mitigation in Variable Frequency Drives: 6-Pulse Drive with Matrix AP Harmonic Filter vs. AFE Drive
    The proliferation of variable frequency drives (VFDs) has brought increased attention to harmonic effects created by drives. A standard 6-pulse drive with no harmonic mitigation technology may interfere with neighboring equipment, reduce equipment life, and negatively impact the utility power
  • Active Harmonic Filters vs. 18-Pulse Drives
    The following document will provide a comparison of 18-pulse drives with the use of 6-pulse drives combined with an active harmonic filter. However before we can compare these two systems we need to take time to give an overview how both of these different solutions work and can aid a facility
  • A New Solution for Harmonics Generated by Variable Speed Drives (.pdf)
    The need for harmonic mitigating devices is growing because of the rapid increase in variable speed drive (VSD) usage in industrial and commercial applications and the corresponding growth in harmonic-related problems. A new state-of-the-art passive universal harmonic filter (UHF) is designed
  • Harmonics and IEEE Std 519
    IEEE Std 519 was first introduced in 1981 to provide direction on dealing with harmonics introduced by static power converters and other nonlinear loads so that power quality problems could be averted. It is being applied by consulting engineers and enforced by Utilities more frequently in recent
  • Effects of Harmonic Currents on Semiconductor Fuse Ratings
    paper described problems caused by premature opening of fuses in the a.c. line inputs to adjustable-speed drives which drew unusually high harmonic currents.
  • Design Considerations When Applying Various ASD Topologies to Meet Harmonic Compliance
    In order to limit the harmonic distortion. produced by Adjustable Speed Drives (ASD's),. manufacturers have introduced several methods of both. passive and active harmonic mitigation. Users of ASD's. however, who are faced with the various options often. find it difficult to select the most
  • Selecting Explosion-Proof Motors and Variable Frequency Drive Controllers for Hazardous Environmental Applications
    Applying variable frequency power to explosion-proof motors in hazardous locations requires special considerations regarding UL 674, motor ratings and variable frequency drive characteristics to name a few. The attached paper (D-7154), originally published in Machine Design, highlights the issues

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