5.00 credits
30.0 h + 30.0 h
Q2
Teacher(s)
Dehez Bruno;
Language
French
Prerequisites
- LEPL 1202 (Physics)
- LELEC 1370 (Measurements and electrical circuits)
The prerequisite(s) for this Teaching Unit (Unité d’enseignement – UE) for the programmes/courses that offer this Teaching Unit are specified at the end of this sheet.
- LELEC 1370 (Measurements and electrical circuits)
The prerequisite(s) for this Teaching Unit (Unité d’enseignement – UE) for the programmes/courses that offer this Teaching Unit are specified at the end of this sheet.
Main themes
- Single-phase and three-phase transformers
- General Theory of electromechanical converters
- Rotating field machines
- Asynchronous machines
- Synchronous machines
- DC Machines
- General Theory of electromechanical converters
- Rotating field machines
- Asynchronous machines
- Synchronous machines
- DC Machines
Learning outcomes
At the end of this learning unit, the student is able to : | |
| 1 |
In consideration of the reference table AA of the program " Master's degree civil engineer mechanics ", this course contributes to the development, to the acquisition and to the evaluation of the following experiences of learning: Contribution of the course to the program objectives Axis 1 (1.1, 1.2, 1.3), Axis 3 (3.3), Axis 5 (5.4) Specific learning outcomes of the course At the end of the course, students will be able to: - Link the fundamental concepts (Faraday's law, energy and magnetic co-energy, ...) to the general equations of an electromechanical converter; - Build the steady state model (equations and equivalent circuit) of a rotating field machine, an asynchronous machine (three or single-phase), a synchronous machine and a DC machine; - Build the steady state model (equations and equivalent circuit) of the transformer (single or three phase); - Experimentally determine the parameters of these models - Use these models to predict operating conditions of these devices depending on the supply and the load. In addition, the student will be able to: - Determine and interpret the characteristic quantities of an electromechanical converter or transformer; - Identify the main electromechanical converters structures; - Establish the conditions guaranteeing the energy conversion in an electromechanical converter; - Explain the principle of the universal motor; - Explain the ways to increase the starting torque, to reduce the starting current or to vary the speed of an electromechanical converter; - Explain how to connect and control an alternator on the grid. |
Content
- Introduction, reminder of the basics of electrical circuits (1h)
- The single-phase transformers (4h): structure, fundamental laws, models of the ideal transformer, of the perfect transformer and of the real transformer, on load operation, experimental parameter identification
- Three-phase transformers (1 hour): structure, connection modes, single-phase equivalent circuit
- The general theory of electromechanical converters (2 hours): classification, structure, basic assumptions, electrical and mechanical equations, magnetic energy and co-energy, electromagnetic torque
- Rotating field machines (4h): general design features, equations, supply, equivalent circuit, saturation, synchronous and asynchronous operating modes, main structures of rotating field machines
- The three-phase asynchronous machine (5h): specific design features, equations, equivalent circuit, phasor diagram (the circle diagram), torque-speed characteristic, operating point, saturation, iron losses, power and efficiency, practical problems (current-starting torque vs efficiency, speed control), specific applications (phase shifter and induction regulator, electrical axis - Selsyn, synchronoscope, Leblanc damper)
- The single-phase induction motor (1 hour): structure, principle and equations
- The synchronous machine (4h): specific design features, equations, equivalent circuits, phasor diagram, operating point (stability), active and reactive power control, connection and control of an alternator on the grid
- The DC machine (2h): specific design features, structure, equations, operating and excitation modes, starting, universal motor
- Introduction, reminder of the basics of electrical circuits (1h)
- The single-phase transformers (4h): structure, fundamental laws, models of the ideal transformer, of the perfect transformer and of the real transformer, on load operation, experimental parameter identification
- Three-phase transformers (1 hour): structure, connection modes, single-phase equivalent circuit
- The general theory of electromechanical converters (2 hours): classification, structure, basic assumptions, electrical and mechanical equations, magnetic energy and co-energy, electromagnetic torque
- Rotating field machines (4h): general design features, equations, supply, equivalent circuit, saturation, synchronous and asynchronous operating modes, main structures of rotating field machines
- The three-phase asynchronous machine (5h): specific design features, equations, equivalent circuit, phasor diagram (the circle diagram), torque-speed characteristic, operating point, saturation, iron losses, power and efficiency, practical problems (current-starting torque vs efficiency, speed control), specific applications (phase shifter and induction regulator, electrical axis - Selsyn, synchronoscope, Leblanc damper)
- The single-phase induction motor (1 hour): structure, principle and equations
- The synchronous machine (4h): specific design features, equations, equivalent circuits, phasor diagram, operating point (stability), active and reactive power control, connection and control of an alternator on the grid
- The DC machine (2h): specific design features, structure, equations, operating and excitation modes, starting, universal motor
- The single-phase transformers (4h): structure, fundamental laws, models of the ideal transformer, of the perfect transformer and of the real transformer, on load operation, experimental parameter identification
- Three-phase transformers (1 hour): structure, connection modes, single-phase equivalent circuit
- The general theory of electromechanical converters (2 hours): classification, structure, basic assumptions, electrical and mechanical equations, magnetic energy and co-energy, electromagnetic torque
- Rotating field machines (4h): general design features, equations, supply, equivalent circuit, saturation, synchronous and asynchronous operating modes, main structures of rotating field machines
- The three-phase asynchronous machine (5h): specific design features, equations, equivalent circuit, phasor diagram (the circle diagram), torque-speed characteristic, operating point, saturation, iron losses, power and efficiency, practical problems (current-starting torque vs efficiency, speed control), specific applications (phase shifter and induction regulator, electrical axis - Selsyn, synchronoscope, Leblanc damper)
- The single-phase induction motor (1 hour): structure, principle and equations
- The synchronous machine (4h): specific design features, equations, equivalent circuits, phasor diagram, operating point (stability), active and reactive power control, connection and control of an alternator on the grid
- The DC machine (2h): specific design features, structure, equations, operating and excitation modes, starting, universal motor
- Introduction, reminder of the basics of electrical circuits (1h)
- The single-phase transformers (4h): structure, fundamental laws, models of the ideal transformer, of the perfect transformer and of the real transformer, on load operation, experimental parameter identification
- Three-phase transformers (1 hour): structure, connection modes, single-phase equivalent circuit
- The general theory of electromechanical converters (2 hours): classification, structure, basic assumptions, electrical and mechanical equations, magnetic energy and co-energy, electromagnetic torque
- Rotating field machines (4h): general design features, equations, supply, equivalent circuit, saturation, synchronous and asynchronous operating modes, main structures of rotating field machines
- The three-phase asynchronous machine (5h): specific design features, equations, equivalent circuit, phasor diagram (the circle diagram), torque-speed characteristic, operating point, saturation, iron losses, power and efficiency, practical problems (current-starting torque vs efficiency, speed control), specific applications (phase shifter and induction regulator, electrical axis - Selsyn, synchronoscope, Leblanc damper)
- The single-phase induction motor (1 hour): structure, principle and equations
- The synchronous machine (4h): specific design features, equations, equivalent circuits, phasor diagram, operating point (stability), active and reactive power control, connection and control of an alternator on the grid
- The DC machine (2h): specific design features, structure, equations, operating and excitation modes, starting, universal motor
Teaching methods
Teaching is organized in:
Virtual lab sessions are carried out autonomously online (via iCampus), but consultancy session are nevertheless organized.
The Moodle platform also includes a series of multiple-choice questions allowing the students to evaluate and deepen their understanding of key concepts for the course. It also includes a series of illustrations for better appropriating these concepts.
Depending on the health situation, the teaching activities can be organized in face-to-face, remotly, using videoconference, or a mix of both.
- 13 lectures;
- 7 supervised exercise sessions;
- 2 practical lab sessions;
- 3 virtual lab sessions.
Virtual lab sessions are carried out autonomously online (via iCampus), but consultancy session are nevertheless organized.
The Moodle platform also includes a series of multiple-choice questions allowing the students to evaluate and deepen their understanding of key concepts for the course. It also includes a series of illustrations for better appropriating these concepts.
Depending on the health situation, the teaching activities can be organized in face-to-face, remotly, using videoconference, or a mix of both.
Evaluation methods
Students will be evaluated:
The final mark is the weighted average of the marks obtained for :
- Collectively based on the reports of the 2 practical labs performed in groups of 4 to 5 students during the semester;
- Individually based on a written exam for the exercise part of the course and an oral exam for the theoretical part.
The final mark is the weighted average of the marks obtained for :
- The reports from the two laboratories, 20%;
- The written examination on the exercises, 40%;
- The oral examination on the theory, 40%.
Online resources
Bibliography
- Transparents du cours
- Enoncés et solutionnaires d'exercices
- Notices de laboratoires et laboratoires virtuels
- Illustrations et compléments au cours
- QCM
- Livre de référence :
B. Dehez, D. Grenier, F. Labrique, E. Matagne, Electromécanique. Principes physiques, Principaux Convertisseurs, Principales applications, Presses universitaires de Louvain, 1er éd., 372p.
- Enoncés et solutionnaires d'exercices
- Notices de laboratoires et laboratoires virtuels
- Illustrations et compléments au cours
- QCM
- Livre de référence :
B. Dehez, D. Grenier, F. Labrique, E. Matagne, Electromécanique. Principes physiques, Principaux Convertisseurs, Principales applications, Presses universitaires de Louvain, 1er éd., 372p.
Faculty or entity
ELEC
