PQBlog

Reliability of Open Public Electric Vehicle Direct Current Fast Chargers

Published David Rempel1, Carleen Cullen1,2, Mary Matteson Bryan1, Gustavo Vianna Cezar3, 1Department of Bioengineering, University of California, Berkeley, CA, USA2Cool the Earth, Kentfield, CA, USA3SLAC National Accelerator Laboratory, GISMo Group, CA, USA Abstract. In order to achieve a rapid transition to electric vehicle driving, a highly reliable and easy to use charging infrastructure is criticalContinue reading “Reliability of Open Public Electric Vehicle Direct Current Fast Chargers”

Hybrid Switch for Capacitors Bank used in Reactive Power Compensation

Published by Adam RUSZCZYK1, Krzysztof KÓSKA1, Konrad JANISZ2ABB Corporate Research Centre, Poland (1), AGH University of Science and Technology, Poland (2) Abstract. This paper describes new concept of a switch dedicated for control of three-phase capacitor bank used for low voltage, reactive power compensation. The proposed device utilizes fully controlled IGBT transistors that gives possibilityContinue reading “Hybrid Switch for Capacitors Bank used in Reactive Power Compensation”

Power Quality – IEEE 519-2022

Published by Comsys AB, website: comsys.se, ADF Technology: Power quality – IEEE 519-2022 A commonly used and very important standard is IEEE 519-2022 (previous versions IEEE 519-1992 and IEEE 519-2014). The standard, among other things, puts two requirements on harmonics; and absolute maximum THDU level, and a variable maximum TDD level. All limits are appliedContinue reading “Power Quality – IEEE 519-2022”

Tropical Climate Effects on Corona Power Losses on 275 kV Transmission Lines in the South Sulawesi System

Published by Ikhlas KITTA, Salama MANJANG, Ida RACHMANIAR, Faris MARICARElectrical Engineering Department, Hasanuddin University, Indonesia Abstract. Electricity losses are very dependent on electric current and loss of the corona phenomenon. It is very clear that losses depend on network parameters, load behaviors and climatic factors. South Sulawesi is a tropical climate. This sector must beContinue reading “Tropical Climate Effects on Corona Power Losses on 275 kV Transmission Lines in the South Sulawesi System”

Solving Electric Vehicle Development Challenges

Published by Mark Patrick, EE Power – Technical Articles: Solving Electric Vehicle Development Challenges, July 14, 2022. A potentially viable approach to solving the development challenges associated with electric vehicles to save both weight and cost. The growth in EV adoption is a clear and obvious trend, confirmed in several recent industry reports. While the pandemicContinue reading “Solving Electric Vehicle Development Challenges”

Are You Compliant with the IEEE 519-2022 Edition?

Published by Elspec LTD, website: elspec-ltd.com The IEEE 519 standard defines the voltage and current harmonics distortion criteria for electrical systems design. The IEEE 519-2022 edition replaces the 2014 edition from December 2022. The IEEE 519-2022 edition includes two important changes: • Installations with mixed loads and Inverter Based Resources/Distributed Energy Resources• Even current harmonicsContinue reading “Are You Compliant with the IEEE 519-2022 Edition?”

Understanding the IEEE 519–2014 Standard for Harmonics

Published by Elspec LTD, website: elspec-ltd.com The IEEE 519-2014 standard defines the voltage and current harmonics distortion criteria for the design of electrical systems. The existed voltage and current waveforms in every part of the system are explained in this standard, and the waveform distortion goals for the system designer are established. The standard isContinue reading “Understanding the IEEE 519–2014 Standard for Harmonics”

Assessment of the Impact of the Micro Wind Turbine on the Power Quality in the Distribution Network

Published by Marek GAŁA, Andrzej JĄDERKO, Politechnika Częstochowska, Wydział Elektryczny Abstract. The article presents the principles of measurements and assessment of power quality characteristics, with the power supplied by the micro wind turbine connected to the distribution network. It describes the basic technical parameters of the vertical axis micro wind turbine 10 kW and theContinue reading “Assessment of the Impact of the Micro Wind Turbine on the Power Quality in the Distribution Network”

HARMONICS: Understanding the Facts – Part 3

Published by Richard P. Bingham Abstract. Understanding what is important to know about harmonics can be challenging for those without extensive electrical engineering backgrounds. This is third and final part of a three part series. This part will provide details on what causes harmonic problems and suggested solutions. What they look like One recent surveyContinue reading “HARMONICS: Understanding the Facts – Part 3”

HARMONICS: Understanding the Facts – Part 2

Published by Richard P. Bingham Abstract. Understanding what is important to know about harmonics can be challenging for those without extensive electrical engineering backgrounds. In this two part series, this second article will help to clarify why you need to be concerned about them, how and where to find them, and when they are aContinue reading “HARMONICS: Understanding the Facts – Part 2”