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The paper presents the analytical solution for the i-Φ magnetic characterization for two different types of iron-core devices (small rated power inductors, reactors or chokes) widely encountered in electronic circuitry. The proposed method bases on the fundamental laws of electromagnetism and a special adopted function for the H-B curve description of the core laminations. The manufacturer data are...
The paper presents a fast and efficient method for determining the solutions of the ferroresonant circuits generated at the switching of different single-phase low-voltage iron-core devices. These are widely encountered in modern electric installations as no-loaded power transformers, magnetic choke or shunt reactors. The here suggested procedure basically relies on the solutions of the nonlinear...
The paper analysis both numerically and experimentally the no-load miniature power transformer energizing process. The transient state characterization targets the predetermination of the main inrush current features: amplitude, duration and waveform signature. The whole quantitative investigation is carried out on a particular core-shaped devices (E+I), widely used in small power applications. The...
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