Published by Electrotek Concepts, Inc., PQSoft Case Study: Voltage Notching and Distribution Systems II – Large DC Drive Examples, Document ID: PQS0506, Date: June 30, 2005. Abstract: This case study describes voltage notching associated with large DC drives. The notching is a normal characteristic of a phase-controlled rectifier but this paper illustrates problems that can occurContinue reading “Voltage Notching and Distribution Systems II – Large DC Drive Examples”
Tag Archives: Harmonics
Voltage Notching and Distribution Systems – Large Induction Motor Drive
Published by Electrotek Concepts, Inc., PQSoft Case Study: Voltage Notching and Distribution Systems – Large Induction Motor Drive, Document ID: PQS0320, Date: July 18, 2003. Abstract: This case describes voltage notching associated with large adjustable speed drives. The notching is a normal characteristic of a phase-controlled rectifier but this paper illustrates problems that can occur onContinue reading “Voltage Notching and Distribution Systems – Large Induction Motor Drive”
PQ Investigation at a Battery Facility
Published by Electrotek Concepts, Inc., PQSoft Case Study: PQ Investigation at a Battery Facility, Document ID: PQS0402, Date: March 30, 2004. Abstract: This case study presents the results of a power quality investigation at a battery manufacturing facility. The facility had been experiencing a high rate of motor failures and was experiencing problems with its computerContinue reading “PQ Investigation at a Battery Facility”
A Power Quality and Load Analysis of a Cryptocurrency Mine
Published by Keaton A. Wheeler, Anthony W. Bowers, Charlie H. Wong, Jonathan Y. Palmer and Xue Wang, Primary Engineering and Construction, Saskatoon/Kelowna, Canada{kwheeler, abowers, cwong, jpalmer & swang}@primaryeng.comPublished in: 2018 IEEE Electrical Power and Energy Conference (EPEC)Date of Conference: 10-11 Oct. 2018DOI: 10.1109/EPEC.2018.8598358 Abstract— This paper conducts a load and power quality analysis on aContinue reading “A Power Quality and Load Analysis of a Cryptocurrency Mine”
Can neutral currents, such as the 3rd harmonic, be reduced by the use of 3rd harmonic blocking filters?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. Some manufacturers are promoting the use of 3rd harmonic (180 Hz) blocking filters for the treatment of high neutral currents caused by non-linear loads such as personal computers. These devices are parallel L-C filters tunedContinue reading “Can neutral currents, such as the 3rd harmonic, be reduced by the use of 3rd harmonic blocking filters?”
General Reference Common Power Quality Problems and Solutions
Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference Common Power Quality Problems and Solutions, Document ID: PQS0315, Date: July 18, 2003. Abstract: Power quality is a frequently used term that means different things to different people. Common power quality problems include all of the issues that arise from the incompatibility between a utility’s powerContinue reading “General Reference Common Power Quality Problems and Solutions”
Am I not safe from harmonics if I use K-Rated transformers and oversized neutrals?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. K-Rated transformers made their appearance several years ago as a means of preventing transformers from failing when subjected to heavy non-linear loading. They are essentially ‘beefed up’ transformers with extra steel in their cores andContinue reading “Am I not safe from harmonics if I use K-Rated transformers and oversized neutrals?”
How reliable are transformer energy efficiency tests (including Independent 3rd Party) under non-linear loading?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. It is much more difficult to accurately determine the energy efficiency of a transformer under non-linear loading than it is under linear loading. The industry accepted technique for measuring transformer efficiency under linear load involvesContinue reading “How reliable are transformer energy efficiency tests (including Independent 3rd Party) under non-linear loading?”
Harmonics and Reduction of Energy Consumption in Lighting Systems by Using LED Lamps
Published by Natthanon Phannil, Chaiyan Jettanasen and Atthapol Ngaopitakkul *Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand; Emails: aun_2535_006@hotmail.com (N.P.); chaiyan.je@kmitl.ac.th (C.J.)*Correspondence: atthapol.ng@kmitl.ac.th; Tel.: +66-(0)2-329-8330 Abstract This paper proposes the study and analysis of harmonics, energy consumption and power quality of light emitting diode (LED) lamps equipped in building lighting systems.Continue reading “Harmonics and Reduction of Energy Consumption in Lighting Systems by Using LED Lamps”
Review of Ship Microgrids: System Architectures, Storage Technologies and Power Quality Aspects
Published by Shantha Gamini Jayasinghe1,*, Lasantha Meegahapola2, Nuwantha Fernando2, Zheming Jin3 and Josep M. Guerrero3 1Australian Maritime College, University of Tasmania, Launceston 7250, Australia,2School of Engineering, Royal Melbourne Institute of Technology, Melbourne 3001, Australia; lasantha.meegahapola@rmit.edu.au (L.M.); nuwantha.fernando@rmit.edu.au (N.F.)3Institute of Energy Technology, Aalborg University, Aalborg 9220, Denmark; zhe@et.aau.dk (Z.J.);joz@et.aau.dk (J.M.G.)*Correspondence: shanthaj@utas.edu.au; Tel.: +61-363-249-752 Abstract: Ship microgridsContinue reading “Review of Ship Microgrids: System Architectures, Storage Technologies and Power Quality Aspects”
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