Understanding Total Harmonic Distortion

White Paper Published by Cowles Andrus, Communications Specialist, Power Monitors Inc., September 2012 Email: candrus@powermonitors.com ABSTRACT This paper discusses the causes of Total Harmonic Distortion, how it is calculated, measured, and how it can impact a power distribution system. Total Harmonic Distortion (THD) can be a challenging concept because of the complexity of the powerContinue reading “Understanding Total Harmonic Distortion”

Advantages of 6-Pulse VFD with Lineator AUHF vs Active Front End (AFE) Drives

White Paper (August 20th, 2015) Published by Anthony (Tony) Hoevenaars, P. Eng , President and CEO Mirus International Inc. INTRODUCTION Active Front End (AFE) Drive manufacturers will claim that their technology provides the best solution for treatment of harmonics associated with variable frequency drives (VFDs). They are quick to point out benefits over standard 6-PulseContinue reading “Advantages of 6-Pulse VFD with Lineator AUHF vs Active Front End (AFE) Drives”

An Investigation on the Validity of Power-Direction Method for Harmonic Source Determination

Published by Wilsun Xu and Xian Liu, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada Yilu Liu, Department of Electrical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA Published in IEEE Transaction on Power Delivery, Vol. 18, No. 1, January 2003 Abstract The power-direction method has been used widelyContinue reading “An Investigation on the Validity of Power-Direction Method for Harmonic Source Determination”

Interaction between Grid-Connected PV systems & LED Lamps: Directions for Further Research on Harmonics and Supraharmonics

Published by Tatiano Busatto, Fahim Abid, Anders Larsson and Math H. J. Bollen, Electric Power Engineering, Luleå University of Technology, Skellefteå 931 87, Sweden Email: tatiano.busatto@ltu.se Gaurav Singh, Department of Electrical and Computer Engineering, Clemson University, Clemson, South Carolina 29634, USA                             Continue reading “Interaction between Grid-Connected PV systems & LED Lamps: Directions for Further Research on Harmonics and Supraharmonics”

The Importance of Good Power Quality

Published by Dr. Kurt Schipman & Dr. François Delincé , ABB Power Quality Products, Belgium ABSTRACT This paper explains the problems that are due to poor Power Quality in electrical systems and shows their possible financial consequences. Power Quality is characterized by parameters that express harmonic pollution, reactive power, and load unbalance. The best possibleContinue reading “The Importance of Good Power Quality”

Direction of Harmonics & Flicker

Published by Arbiter Systems, Inc.  Enabling Tomorrow’s Technology Today Overview As regulatory authorities impose ever-stricter requirements for power quality, utilities increasingly want to know which customer is imposing harmonics and flicker on the utilities power system. As a result, we are often asked if we can determine the “direction” of harmonic power flow, and whatContinue reading “Direction of Harmonics & Flicker”

A Comprehensive Review of Power Quality Issues & Measurement for Grid-integrated Wind Turbines

Published by Ahmed F. Zobaa and Ibrahim Ahmed, Department of Electronic and Computer Engineering, Brunel University London, Uxbridge, UB8 3PH, UK. Shady H.E. Abdel Aleem, Mathematical and Physical Sciences, 15th of May Higher Institute of Engineering, Cairo, Egypt. Journal Article: Recent Advances in Electrical & Electronic Engineering, 2019, 12, 210-222 (Volume 12, Issue 3 ,2019)Continue reading “A Comprehensive Review of Power Quality Issues & Measurement for Grid-integrated Wind Turbines”

Interpretation & Analysis of Power Quality Measurements

Published by Christopher J. Melhorn, Electrotek Concepts, Inc. Knoxville, Tennessee Mark F. McGranaghan, Electrotek Concepts, Inc. Knoxville, Tennessee ABSTRACT This paper describes advances in power quality monitoring equipment and software tools for analyzing power quality measurement results. Power quality monitoring has advanced from strictly problem solving to ongoing monitoring of system performance. The increased amountContinue reading “Interpretation & Analysis of Power Quality Measurements”

The Effects of Changes to IEEE 519-1992 to 2014

Published by EATON, Powering Business Worldwide Application Note AP040094EN, Effective November 2014 Introduction Recent changes have been made to IEEE 519. These revisions add clarity to the 1992 document as well as present new definitions, methods and recommendations. This brief summary of changes to IEEE 519 as it pertains to low voltage adjustable frequency drivesContinue reading “The Effects of Changes to IEEE 519-1992 to 2014”