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Vfd Variable Frequency Drive - India

price: contact company for price

A VFD controls AC motor

speed. The

drive converts the fixed supply frequency (60 Hz) to a variable-

frequency, variable-voltage output to enable precise motor speed

control. Many VFDs even have the potential to return energy to the power

grid through their regenerative capability.

Energy is lost primarily in three areas:




The third area, energy conversion-converting energy into useful work via motors, heat exchangers, process heaters, pumps, motors, fans, compressors, and so forth—represents a large opportunity for energy savings in manufacturing.

Industrial electric motor-driven systems represent the largest single category of electricity use in the U.S.—more than 65 percent of power demand in industry. Consequently, motor-driven systems offer the highest energy savings potential in the industrial segment.

Supporting this statistic, studies show that 97 to 99 percent of motor life cycle costs are expended on the energy that the motor uses. This fact alone should be a driving motivation for companies to perform a periodic energy consumption analysis on the motor systems they use in their facilities.

Inefficient and ineffective control methods in two areas waste motor systems' energy:

Mechanical flow control (pumps, fans, compressors)

Energy recovery (regeneration of braking energy or inertial energy)

A VSD - variable speed drive is an effective tool in conserving and recovering energy in motor systems.

Company Contact:

  • Phone: 912267059033

  • Address: Daffodil, Sepal, Sama Savli Road, Behind Gangotri, Baroda Gujarat, India

  • Email: Email

Published date: October 16, 2013 -

  • Business Description: VFDs.in Variable Frequency Drive used to control a motor's speed or

    torque can net substantial energy savings. But VFDs, also known as

    adjustable speed drives and variable speed drives (VSD), can induce

    unwanted motor shaft voltages. A maintenance free, long life shaft

    grounding ring that protects attached equipment as well as the motor's

    bearings is warranted.

    Bearing protection for induction motors

    A bearing protection ring is available for any NEMA or IEC motor size. It can be factory installed inside new motors or quickly and easily retrofitted even in the field using conductive epoxy (at right).

    VFD, used to control a motor's speed or torque, can net substantial savings in energy costs, up to 30 percent. Because of this, they have been cited as a key technology to make industrial HVAC systems, automated assembly lines, and other processes more energy efficient.

    But VFD, also known as variable speed drives (VSD) and ac drives, can induce unwanted motor shaft voltages. Without effective mitigation, these electrical discharges can destroy bearings, causing premature motor failure.

    In fact, the costly repair or replacement of failed motor bearings can wipe out any savings that an AC drive yields and severely diminish the reliability of an entire motor driven system. And when a VFD controlled motor fails, warranty claims against motor and VFD manufacturers may not pan out. Because systems that use VFDs are so varied, the liability question is a hot potato.

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