ECG 741 Power Distribution Transformers~eebag/EE 741 - Transformers I.pdf· PDF fileExcitation Current in a Real Transformer Even when no load is connected to the secondary coil of the transformer, a current will flow in the primary coil. This current consists of: 1. Magnetization current i m is needed to produce the flux in the core; 2. Core-loss current i h+e corresponds to hysteresis and eddy current losses. Flux causing the
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