Published by Richard Lam, CHK Power Quality Pty Ltd. Website: http://www.chkpowerquality.com.au Abstract. Transformer harmonic current derating metrics; Harmonic Loss Factor, K-Factor, and Factor K are introduced, and used to calculate derating factors for dry and oil-filled type transformers. Introduction The introduction of Switched Mode Power Supplies (SMPS) in office equipment and LED lighting, Variable Frequency/SpeedContinue reading “An Introduction to Transformer Harmonic Current Derating Metrics”
Tag Archives: Eddy Current
Large-Power Synchronous Motor Braking by Field Current
Published by Marian HYLA, Silesian University of Technology, Department of Power Electronics, Electrical Drives and Robotics Abstract. The paper presents the braking process of a large-power salient-pole synchronous motor forced by field current. The motor control was carried out using a microprocessor block for the excitation of large-power synchronous motors. Cases of free retardation andContinue reading “Large-Power Synchronous Motor Braking by Field Current”
Transformer Losses and Efficiency
Published by Alex Roderick, EE Power – Technical Articles: Transformer Losses and Efficiency, June 16, 2021 In this article we will learn about the four main types of transformer losses and calculations for finding the efficiency of a transformer. Transformers, like all devices, are not perfect. While ideal transformers do not have losses, real transformers haveContinue reading “Transformer Losses and Efficiency”
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