Analysis power circuits

This course presents an analysis of simple electrical circuits in permanent sinusoidal mode. It is created a basic knowledge base for the effective understanding of the issues that have to do with power systems analysis and include the absolutely necessary knowledge needed by an electrical engineer.

Objectives

Targets of the lesson: To give to all students all the knowledge that is necessary in order to be able to solve simple power circuits problems. To teach the way how can we combine the new knowledge with older knowledge during solving practical problems To develop the capability of the students to solve practical problems

Prerequisites

There ane no prerequisite courses

Syllabus

Sinusoidal steady-state analysis of single phase circuits: The sinusoidal source, the sinusoidal response, the concept of phasors, the passive circuit elements in the frequency domain, laws and methods for circuit analysis in the frequency domain, series and parallel resonance. Power in circuits with sinusoidal excitation: Instantaneous, real and reactive power, the concept of complex power, apparent power, the power triangle, power factor correction, equivalent circuits of loads. Circuits with periodic non sinusoidal excitation: Harmonics, power with periodic non sinusoidal voltages and currents. Multiphase circuits: Two-phase system. Symmetrical three- phase system under symmetrical load. One phase equivalent circuit. Symmetrical three- phase system under unsymmetrical load. Shift of the neutral point of the load in relation to neutral point of the source. Active, reactive and apparent power of the three- phase circuits with symmetrical and unsymmetrical load. Measurement of active and reactive power in symmetrical and unsymmetrical three- phase circuits. The two Wattmeter method (ARON). Phase sequence. Symmetrical components: Definition of symmetrical component transformation. Loads sequence impedances. Unsymmetrical three- phase voltages with symmetrical loads. Sequence circuits. Symmetrical component powers.