Basic properties of linear circuits in stationary and Sinusoidal Steady-State, Linear circuit elements, Analysis of linear electric circuits. Three-phase system. Transfer properties of linear circuits. Transient phenomena. Basic principles of computer simulation of electrical circuits. Lecture topics: 1. Definition of basic quantities in the theory of electrical circuits: charge, current, voltage, energy, power, Magnetic flux, Maximum, Average and RMS Value of quantities. 2. Passive elements of electrical circuits parameters: resistance, capacitance, inductance, conductivity, mutual inductance. 3. Basic analysis of electrical circuits. Kirchhoff's laws, Serial and Parallel combinations, Linear sources, Thevenin's and Norton's Theorem, Superposition, Wye-Delta Transformations, Basic methods of analysis of non-linear elements in circuits 4. Circuit equations - using mesh and nodal analyses. 5. Introduction to circuit simulation I: circuit simulators, SPICE, netlist, calculation of quantities in DC circuit 6. AC circuits analysis: Sinusoidal waveform and current, Voltage and current phasors, using at circuits elements, Instantaneous, average, apparent and reactive power. 7. Elements in AC circuits, Impedance and Admittance, Complex power, Resonance. Loss Factor and Circuit Quality 8. Multi-phase systems, Three-phase system, Phasor diagram, Balanced and Unbalanced Wye and Delta connections, Power in Three-phase systems, 9. Electrical circuit analogs of linear physical circuits, magnetic circuits 10. Introduction to transient first-order phenomena 11. Transmission functions - complex circuit transmission, normalized transmission function, frequency characteristic of the integration and derivation cell. 12. Two-ports, definition of matrix Z, Y, K, H, A and B, matrix of basic transmission circuit structures and their properties. 13. Introduction to circuit simulation II: harmonic transmission analysis, transient analysis 14. Non-harmonic periodic , Fourier Series a substitution solution. Performance in non-harmonic periodic course. Harmonic distortion. Determination of Fourier Coefficients for Circuit Simulation. Exercise content: Computational: Exercise concepts - Voltage, Current, Resistance, Conductivity, Circuit Elements and Their Sorting, Examples of Simplified Bipolar Simplification, Voltage Divider, Circuit Equivalence, Thevenin and Norton Theorem, DY Transformation with Resistors, Examples of Circuit Equations (resistor, capacitor, inductor), phasor diagram, circuits LR, RC, LCR, linear DC power supply, complex power output, coil and capacitor alternating circuits, three-phase system, examples of double-port transmission (derivation and integration cell) first order transient process, non-linear circuits, harmonic distortion. Netlist file structure analysis, netlist editing, simulation input and evaluation basics laboratory measurements: Basic electrical measurements - measurement of DC current, voltage, power and resistance, measurement of parameters of circuit elements - resistance, capacity, nonlinear characteristic, internal resistance of the source Measurement on three-phase system - Voltages and currents in the connection of sources and voltages to the star and to the triangle.
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