Category Archives: Power Quality

Electric Power Quality and Ship’s Safety

Published by J. Mindykowski2, E. Szmit1, T. Tarasiuk21 Polish Register of Shipping, Electrical and Automation Department2 Department of Marine Electrical Power Engineering of Gdynia Maritime University 1.Introduction The issue of electric power quality onboard ships has seemed of utmost importance, in particular nowadays when a great progress in implementation of electric drives for ship’s thrusters,Continue reading “Electric Power Quality and Ship’s Safety”

Transient Issues Related to Power Factor Correction

Published by Electrotek Concepts, Inc., PQSoft Case Study: Transient Issues Related to Power Factor Correction, Document ID: PQS0605, Date: April 1, 2006. Abstract: Power factor correction is an important facet of power quality. Capacitors may be installed on customer systems to minimize charges for poor power factor on their electric bill. These installations may create problemsContinue reading “Transient Issues Related to Power Factor Correction”

Flywheel Size Design Considerations and Experimental Verification Using a 50-kW System for Voltage Sag Compensator with Flywheel Induction Motor

Published by Shuhei Kato, Miao-miao Cheng, Hideo Sumitani and Ryuichi Shimada,Integrated Research Institute, Tokyo Institute of Technology, Japan SUMMARY Flywheel energy storage systems can be used as an uninterrupted power supply system because they are environmentally friendly and have high durability. The use of a simple voltage sag compensator with a low-speed heavy flywheel andContinue reading “Flywheel Size Design Considerations and Experimental Verification Using a 50-kW System for Voltage Sag Compensator with Flywheel Induction Motor”

Supraharmonics–The Next Big PQ Concern

Published by Mirus International Inc., Harmonic and Energy Saving Solutions: Supraharmonics–The Next Big PQ Concern, Sept. 2020 Mirus International Inc., 31 Sun Pac Blvd., Brampton, Ontario, CanadaL6S 5P6, Tel: (905) 494-1120, Fax: (905) 494-1140, Toll Free: 1-888 TO MIRUS (1-888-866-4787), Website: http://www.mirusinternational.com, E-mail: mirus@mirusinternational.com

General Reference – Power Factor Correction

Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference – Power Factor Correction, Document ID: PQS0311, Date: April 16, 2003. Abstract: Simply stated, power factor is a measurement of how efficiently a facility uses electrical energy. A high power factor means that electrical power is being utilized effectively, while a low power factor indicates poorContinue reading “General Reference – Power Factor Correction”

K-factor & Transformers

Published by Pacific Crest Transformers, 300 West Antelope Road – Medford, Oregon 97503 Tel : (541) 826 – 2113 Fax : (541) 826 – 8847. March, 2015. Transformers serving heavy nonlinear loads are subject to increased winding temperatures due to the harmonic currents generated by those loads. This overheating can result in a shortened serviceContinue reading “K-factor & Transformers”

Where to Go For Help

Published by CEA Technologies Inc. (CEATI), POWER QUALITY Energy Efficiency Reference Guide, Chapter 5 – Where to Go For Help. Web Resources IEEE Standards Information Home of the IEEE standards; in particular 446; 519; 1100 (“The Emerald Book”, considered the key IEEE reference on power quality); 1159; 1250 and 1346. Copper.org A site by theContinue reading “Where to Go For Help”

Solving and Mitigating Electrical Power Problems

Published by CEA Technologies Inc. (CEATI), POWER QUALITY Energy Efficiency Reference Guide, Chapter 4 – Solving and Mitigating Electrical Power Problems. 4.1 Identifying the Root Cause and Assessing Symptoms Power quality technologists employ technical instrumentation. This instrumentation can range from simple digital multi-metering through to sophisticated waveform analysis instruments. True power quality monitoring requires full-timeContinue reading “Solving and Mitigating Electrical Power Problems”

Power Quality Problems

Published by CEA Technologies Inc. (CEATI), POWER QUALITY Energy Efficiency Reference Guide, Chapter 3 – Power Quality Problems. 3.1 How Power Quality Problems Develop Three elements are needed to produce a problematic power line disturbance: A source A coupling channel A receptor If a receptor that is adversely affected by a power line deviation isContinue reading “Power Quality Problems”