The aim of the course is to familiarize the student with the issues of electrical circuit elements, the solution of AC electrical circuits, the issue of performance in these circuits and the magnetic properties of ferromagnetic materials in relation to the topic of rotating and non-rotating electrical machines and devices. Furthermore, the course deals with the basic principles and equations, properties, characteristics, structural arrangement and possibilities of application of DC machines, transformers, AC machines (asynchronous and synchronous), and electrical devices (switching devices and circuit breakers) according to the following overview: 1. Basic active and passive circuit elements, their circuit properties and characteristics. 2. Solution of DC and AC electrical circuits, phasors, impedance, method of loop currents and nodal voltages. 3. Three-phase AC circuits, performance in single-phase and three-phase AC circuits. 4. Magnetic properties of ferromagnetic materials, quantities and relations for magnetic circuits, losses in ferromagnetics. 5. Use of Maxwell's equations for electromagnetic design and derivation of functional principles of electrical machines and devices, electromechanical energy conversion. 6. Switching and protection devices, principle of operation, design, basic characteristics, use. 7. DC machines, principle of operation, basic arrangement and design, winding, basics of commutation, armature reaction and its effects, motor and generator operation, internal induced voltage, internal torque. 8. DC machine with external and series excitation, equivalent circuits, mathematical description, steady states and transients, static characteristics, starting, speed control, braking. 9. Single-phase transformer, principle of operation, possible arrangements and design, basic equations, magnetic equilibrium, equivalent circuit, phasor diagram, no-load and short-circuit losses. 10. Alternating current rotating machines, voltage induced in the winding, types of windings, rotating magnetic field. 11. Asynchronous machines, operating principle, slip, motor, generator, braking mode, structural arrangement, equivalent circuit, phasor diagram, power distribution, torque of an asynchronous machine. 12. Methods of starting asynchronous motors, frequency speed control, braking. 13. Synchronous machines, their classification, properties, principle of alternator and synchronous motor, structural design, mathematical description, phasor diagram, torque of a synchronous machine; speed control options, specifics of synchronous machines with permanent magnets.
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unspecified, Monologic (reading, lecture, briefing), Dialogic (discussion, interview, brainstorming), Work with text (with textbook, with book), Monitoring, Demonstration, Projection, Skills training, Laboratory work, Work-related activities
- Participation in classes
- 30 hours per semester
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