Variable frequency drive is widely used in high-speed machinery as this technology offers several benefits

 

Variable Frequency Drive Market
Variable Frequency Drive

A Variable Frequency Drive (VFD) is an electronic controller that changes the voltage or frequency of an induction motor to minimize energy waste. The VFD is often the best choice for certain applications, including lubrication systems and pneumatics. Variable-speed drives also save energy by optimizing power supply to the driven equipment. This technology has several benefits, which make them a popular choice for high-speed machinery.

The Global Variable Frequency Drive (VFD) Market is estimated to be valued at US$ 18,878.1 million in 2021 and is expected to exhibit a CAGR of 8.4% over the forecast period (2021-2028).

There are many advantages to using a variable frequency drive, or VFD, in a machinery. These drives are more energy-efficient than standard DC drives, and can be designed to power more machines at once. This type of drive also minimizes the power surges needed to start the motor, which can be as much as eight times the normal full-load current. VFDs are also more energy-efficient than standard DC drives, and can save 40% on a power bill. Energy efficiency is a top concern worldwide, and the variable frequency drive is gaining popularity in a variety of end-use industries.

The AC power fed into the drive's DC bus is converted into DC using a capacitor. Similar to a reservoir in a plumbing system, the capacitor absorbs the AC ripple and delivers smooth DC power. The DC bus voltage in this case becomes 650VDC. The actual DC bus voltage depends on the AC line feeding the drive, the impedance of the power system, and the reactors or harmonic filters installed on the drive.

A variable frequency drive interface is a key interface for controlling and monitoring a motor. It may communicate with a PLC via serial protocols, relay inputs, or 0-10V analog signals. Most VFDs block out programming changes while they are running. Programmable parameters typically include the motor nameplate information, speed reference source, on/off control source, and braking control. Some models have debugging information that can help troubleshoot problems and improve the efficiency of an equipment. Recently in May 2021, Emerson launched its Copeland VFD product lines designed for maximum compatibility with compression products of Copeland for reducing costs and complexities of VFD implementation.

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