Motors and Drives

Courtesy: Toshiba International Corp.
Motors, Drives November 2, 2020

How to match drives (VFDs, VSDs) to the motor

Size a variable-speed drive (VSD) for the application, and ask if a general-purpose drive will do or if more embedded intelligence is needed. Do you need a VSD, variable frequency drive (VFD) or adjustable speed drive (ASD)? (Trick question)

By Joshua Jagnanan
Courtesy: Yaskawa America Inc.
Motors, Drives July 1, 2020

Top 5 VFD parameter changes explained

Programming variable frequency drives (VFDs) to fit most industrial applications require only the most basic settings to operate the motor. Understand these 5 VFD parameter changes to optimize VFD programming to fit most motor-drive applications.

By Christopher Jaszczolt
Courtesy: New Products for Engineers, CFE Media and Technology
Motors, Drives May 17, 2020

10 essential maintenance and troubleshooting tips for VFDs

A properly maintained variable frequency drive (VFD) can provide decades and cost-effective service. Making VFD inspections and maintenance part of facility oversight can improve outcomes.

By Lori Wade
Figure 1: At the Gwinnett County (Georgia) Department of Water Resources F. Wayne Hill Water Resource Center, the pipe gallery of the membrane process area is shown. The pumps are the permeate pumps, which are used to pump water from the from the tanks through the membranes. Courtesy: CDM Smith
Motors, Drives February 21, 2020

Top 5 Consulting-Specifying Engineer articles: February 14-20

Read the best articles from the past week. VFDs, NFPA 20 fire pumps, NEC 2017 changes, mergers and acquisitions, and designing circuit interrupters.

By Chris Vavra
Motors, Drives January 15, 2020

When are VFDs essential?

Engineers should understand variable frequency drive technologies, and the key considerations for designing a VFD to control a motor

By Shreeram Srinivasan, CDM Smith, Chennai, India; and Bernard Pettiford, PE, CDM Smith, Atlanta
Motors, Drives August 6, 2019

Three steps to size motors

Proper motor sizing precludes equipment failures, ensures efficiency and reduces maintenance issues.

By Bryan Sisler
Motors, Drives April 12, 2019

VFD: Swap it or upgrade?

There’s a lot to know behind the process of replacing a drive.

By Jonathan Kopczyk
Motors, Drives March 1, 2018

Your questions answered: Critical power: Motors, variable frequency drives, and variable speed drives

The Feb. 22, 2018, “Critical power: Motors, variable frequency drives (VFDs), and variable speed drives” webcast presenters addressed questions not covered during the live event.

By John Yoon, PE, LEED AP ID+C; and Kenneth Lovorn, PE
Motors, Drives October 17, 2017

Back to basics: VFDs and harmonic mitigation

Variable frequency drives (VFDs) have problems with application and operations; learn how to mitigate common issues.

By Syed M. Peeran, PhD, PE, Life Senior Member IEEE, Boston
Motors, Drives October 10, 2017

Your questions answered: Electric motor basics

The Sept. 27, 2017, “Electric motor basics” webcast presenter addressed questions not covered during the live event.

By Reece Robinson and Jim Swetye, Grundfos Pumps Corp.