Transformers and electric machines. Lecture course

The issues of the general theory of transformers are considered, starting with the device, the principle of operation and idle conditions, work under the load of a double -locking transformer. The basic ratios for voltages, currents and complex resistances of the ideal transformer are displayed, and methods for taking into account the features of real transformers in practical calculations are shown.
The detailed output of equilibrium equations of the stresses of the above transformer is given, the most commonly used substitution circuits are shown. The issues of the work of transformers in three -phase electric networks are considered, including asymmetric modes. The features of one- and three-phase autotransformers, as well as welding transformers, are characterized.
intended for students studying in the direction of 13.03.02 Electric power and electrical engineering, as well as students of other engineering specialties