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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.
  • Three-Level AC Drive Eliminates Long Motor Cable Issues
    This alternative technology is ideal for petrochemical applications.
  • 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
  • AC and DC Drives: Drive Heat Dissipation and Enclosure Sizing
    This is an upgrade of the Application Notes Binder Article 1B. This upgrade reflects the latest product offerings from Reliance Electric Standard Drives. AC and DC drives are very efficient devices. AC drive efficiencies are >= 95%, while DC drive conversion efficiency is often over 98%. Even
  • AC Motors
    A synchronous and synchronous motors are the two main categories of ac motors. The induction motor is a common form of asynchronous motor and is basically an ac transformer with a rotating secondary. The primary winding (stator) is connected to the power source and the shorted secondary (rotor
  • The Difference Between The Self-Drive And External-Drive Buzzers
    Depend on the driving signal, the buzzer divide into self drive and external drive. However inner circuit/ no circuit, DC/ AC, and active/ passive are all mean the same.
  • When to use a Soft Starter or an AC Variable Frequency Drive
    A common question when deciding between a soft starter or a drive is, which one to select? The purpose of this publication is to show similarities and differences between the soft starter and the drive.
  • Braking and Regenerative Energy with AC Drives
    What is Regenerative Energy? When a motor turns faster than the commanded speed as set by its AC variable speed drive, the motor in effect acts as a generator. An example of this would be the control of an elevator car as it descends. With the help of gravity, the load will readily lower. In fact

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