Tag: VFD

A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.

Variable Frequency Drives (VFDs) in Municipal Projects

Variable Frequency Drives (VFDs) in Municipal Projects

What kind of difference can a variable frequency drive—better known as a VFD—make for a municipality? A significant one. Just look at the town of Mooresville in North Carolina, where a VFD developed by Eaton has not only boosted the energy efficiency of the municipal water treatment plant, but has

HVAC Innovations

HVAC Innovations

Efficiency is the buzzword for innovations in HVAC technologies. “Government mandates are requiring higher efficiencies overall from the building, which includes everything from the HVAC all the way to the glass in the door,” points out Steve Ulm, spokesperson for SEMCO. “Efficiency is driving the construction industry as a whole.”

Integrating CHP with Microgrids

Integrating CHP with Microgrids

While combined heat & power (CHP) may not be appropriate for integration into all microgrids, it definitely does have its place in a lot of them.

CHP systems output heat (or cooling), as well as electricity, primarily as a topping cycle. “The prime mover is typically a reci­procating engine or a turbine,”

Selecting the Right Fan for the Job

Selecting the Right Fan for the Job

There is an industry-wide push right now to use fan arrays based on efficiency, redundancy, and fit. Not too long ago, the only fans in use in air handlers were double-width, double-inlet (DWDI) fans. In recent years, engineers and facility personnel have begun to understand how plenum fans, if applied

Tapping In to the Cost-Saving Power of VFDs

Tapping In to the Cost-Saving Power of VFDs

What kind of difference can a variable frequency drive—better known as a VFD—make for a municipality? A significant one. Just look at the town of Mooresville in North Carolina, where a VFD developed by Eaton has not only boosted the energy efficiency of the municipal water treatment plant, but has

How the Variable Frequency Drive (VFD) Was Developed

How the Variable Frequency Drive (VFD) Was Developed

Finding Perfect Harmony
Peter Hammond, now a consulting engineer with Siemens, thought a lot about how to solve a serious problem with medium-voltage VFDs in the late 1980s when he was with Robicon. He had been designing low-voltage VFDs for many years. Then a solution occurred to him as the company, now

Regulation of Commercial Fan Efficiency

Regulation of Commercial Fan Efficiency

Fans consume 14% of the electricity purchased by industrial and commercial buildings (Nadal et al. 2002). Yet, fan efficiency has escaped the attention of those who design efficiency into the air systems they specify. That is about to change. The US Department of Energy (DOE) will publish their proposed rule this year covering

Guest Commentary: The Benefits of Variable Frequency Drives

Guest Commentary: The Benefits of Variable Frequency Drives

With the cost of energy and water and wastewater services continuing to rise, operators are looking for ways to reduce the costsof these basic, yet crucial-to-life, utilities. Proposed energy efficiency standards from the US Department of Energy (DOE) and other federal measures could help.

Electrical Training Works!

Electrical Training Works!

2016 Training Courses. click here to view brochure
• Building Automation Technology
• Emergency Generators/UPS
• NFPA 70e CAL/OSHA Safety
• 5-Day Power System Design, Protection and System Studies
• NFPA-70b Electrical Maintenance
• California Fire Alarm Systems & Code
• Electrical Grounding and NEC
• HV Electrical Maintenance
• VFD and Electric Motor Control Training
[text_ad

Enter Your Log In Credentials
×