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  • AC Drive Motors -- Influence of Drive on Acoustical Noise
    effects of the waveform should be carefully considered. One effect is the generation of acoustical noise in addition to the noise ordinarily produced by an AC motor. This technical guide explains this phenomenon and gives recommendations on minimizing noise when using ABB adjustable frequency drives.
  • AN1162 - Sensorless Field Oriented Control (FOC) of an AC Induction Motor (ACIM)
    AN1162 Sensorless Field Oriented Control (FOC) of an AC Induction Motor (ACIM) operate at a speed that is roughly proportional to the Author: Mihai Cheles input frequency. As you decrease the frequency of the Microchip Technology Inc. drive voltage, you also need to decrease the amplitude Co-Author
  • Using Regenerative Converter Units to Recover Over Voltage Energy in AC Drive Systems (.pdf)
    Regeneration occurs in an AC variable frequency drive system when the load overhauls the motor. This can occur when trying to decelerate the load, or when some external force causes the motor to overhaul, causing the motor to act like a generator. The energy contained in the rotating equipment
  • Selecting Explosion-Proof Motors and Variable Frequency Drive Controllers for Hazardous Environmental Applications
    important to the success of a XP motor operated on variable frequency drive power. The proper application of variable-frequency drive controller power to AC induction motors can be difficult even in relatively simple applications. When using a variable-frequency controller, the non-pure sine wave
  • Using AC PWM Drives on Non-Standard Voltages and Frequencies
    nominal value. Applications requiring voltage reduction beyond this range have special motor and drive considerations. Input frequency can be either 50 or 60 Hz. Input frequency is not related to how much output frequency can be attained, since AC is first converted to DC and then back to AC again. Within
  • Reference Guide: Glossary of Terms
    AC Motor - AC Motors may be operated at a constant speed, without variable speed control, or may be furnished with a variable frequency controller for variable speed control. Variable speed AC Motors generally provide a 10:1 drive turndown ratio, typically for powering a feeder.
  • Motors and Drives: A Practical Technology Guide
    electrical principles to DC and AC motor principles of operation. The initial cost of a motor only represents about 3% of its total lifetime expense, with operating costs representing the other 97%. Therefore, energy savings with VFDs (variable frequency drives) is a topic that faces many consumers
  • Synchronous & Induction Motors: Discovering the Difference
    induction motors can be overcome using a variable frequency drive (VFD) or a vector drive

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