Universidad Pública de Navarra - Nafarroako Univertsitate Publikoa

Module/Subject matter

Common Industrial Training Module / Electrical Engineering

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Contents

- Introduction to electric machines.

- Principles of electromagnetism.

- Magnetic materials.

- Electrical conductors and dielectrics.

- Single-phase and three-phase transformers.

- Principles of rotating electric machines.

- Induction machine: equivalent circuit and steady state operation.

- Synchronous machine: equivalent circuit and steady state operation.

- Switchgear associated to electric machines.

- Laboratory.

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General proficiencies

CG3: Knowledge in basic and technological subjects, which enables them to learn new methods and theories, and gives them versatility to adapt to new situations.

CG4: Ability to solve problems with initiative, decision making, creativity, critical reasoning and to communicate and transmit knowledge, skills and abilities in the field of Industrial Engineering.

CG10: Ability to work in a multilingual and multidisciplinary environment.

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Specific proficiencies

CC4: Possess knowledge and understand the principles of the theory of circuits and electrical machines.

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Learning outcomes

R1. To know the general fundamentals of electrical machines.

R2. To understand the principle of operation of transformers.

R3. To understand the creation of magnetic field in the airgap and electromotive forces induced in rotating electric machines in steady state.

R4. To operate the steady-state equivalent circuits of alternating-current, rotating electric machines.

R5. To understand the operation of rotating machines as a motor and generator.

R6. To know the main characteristics of each type of electric machine in different applications.

R7. To solve problems related to the main electrical machines (transformers, electromagnets, induction machines, synchronous machines, etc.).

R8. To know the basic switchgear related to electric machines.

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Methodology

This Electrical Machines subject is of a theoretical-practical nature, combining classroom-based classes, problem classes, activities and group work, practical sessions and autonomous learning by the student.

The classroom-based classes will consist of the theoretical explanation of the fundamental aspects of each topic, as well as the resolution of doubts and questions raised by the students based on their autonomous learning of each topic. As part of the practical, individual and / or group activities, practical exercises and works related to the topics will be carried out.

To understand the subject and make efficient use of it, it will be necessary for the student to carry out continuous work around the following activities:

• Attend class regularly.
• Carry out reflective reading and a deep study of the material that is provided or indicated in each topic.
• Carry out the exercises and tasks that are proposed throughout the course.
• Participate actively in discussions that arise in class.
• Consultation of doubts arising in the study of the subject in the times set by the teacher for this purpose.

MiAulario will be used as a teaching accessory, a tool that allows for a better use of the subject. Through it, the calendar of the different activities of the subject will be indicated, the teaching material will be accessible, and will be used to send work requested to be done in class.

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Languages

English.

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Evaluation

 

Learning outcome	Assessment activity	Weight (%)	It allows test resit	Minimum required grade
R1, R2, R3, R4, R5, R6, R7	Theory Partial test 1 (10%): Units 2 and 3 Partial test 2 (20%): Units 4 and 5 Final test (50%): Whole semester	80	Yes	50%
R4, R5, R6, R7, R8	Laboratory Continuous work (12%) Laboratory exam (8%) Attendace to the laboratory is required. In the case of unjustified absence, the theory exam cannot be taken and the course is graded as "Not Presented"	20	No	-

 

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Agenda

The Electrical Machines course is divided into five topics, the specific contents of which are detailed below:

 

Unit 1. Introduction to Electric Machines.

1.1-  Deffinition of electric machine

1.2-  Electric machines as key element in the power system

1.3-  Classification of electric machines

 

Unit 2. Principles of electromagnetism.

2.1-  Fundamental laws of electromagnetism

2.2-  Magnetic circuits

2.3-  Inductor. Inductance and leakage flux

2.4-  Ferromagnetic materials. Hysteresis and eddy currents

2.5-  Permanent magnets

 

Unit 3. Transformers.

3.1-  General concepts

3.2-  Operating principles of an ideal transformer

3.3-  Modeling a real transformer

3.4-  Equivalent circuit of a transformer

3.5-  Measurement of the equivalent-circuit parameters

3.6-  Load operation and efficiency

3.7- Three-phase transformers

     3.7.1-  Assembly of thre-phase transformers

     3.7.2-  Vector group of a three-phase transformer

     3.7.3-  Single-phase equivalent circuit analysis

 

Unit 4. Fundamentals of Rotating Electric Machines

4.1-  Introduction

4.2-  Magnetic field generated by a full-pitch coil

4.3-  Induced voltage in a full-pitch coil

4.4-  Generation of sinusoidal magnetic fields. Winding factor

4.5-  Multi-pole machines

4.6-  Ferraris¿ Theorem

4.7-  Electromagnetic torque

4.8-  Inductances in rotating EMs

 

Unit 5. Synchronous machine

5.1-  Introduction

5.2-  No-load and load operation

5.3-  Single-phase equivalent circuit and parameter measurement

5.4-  Stand-alone operation

5.5-  Grid-tied operation

5.6-  Classification of synchronous machines

 

Unit 6. Asynchronous or induction machine

6.1-  Introduction

6.2-  Operation principle

6.3- Equivalent circuit of a machine phase

6.4-  Parameter measurement

6.5-  Power balance

6.6-  Torque-speed characteristic

6.7-  Starting an induction motor

6.7-  Speed variation of induction machines

6.8- Types of induction machines

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Experimental practice program

The theoretical training will be complemented with hands-on sessions in which the students will work with experimental assemblies on:

- Session 1: Single-phase transformer

- Session 2: Three-phase transformer

- Session 3: Fundamentals of rotating machines

- Session 4: Synchronous Generator

- Session 5: Induction motor

- Session 6: Electric drives for induction machines

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Bibliography

Access the bibliography that your professor has requested from the Library.

Basic Bibliography: 

• L. Marroyo, P. Sanchis; Apuntes sobre Máquinas Eléctricas; UPNA.
• Jesús Fraile Mora, Máquinas Eléctricas; Colegio de Ingenieros de caminos, canales y puertos, tercera edición, 1995
• J. Sanz Feito; Máquinas Eléctricas; Prentice Hall; 2002.

Advanced Bibliography

• S. J. Chapman; Máquinas Eléctricas; McGraw Hill; segunda edición (1993).
• A. E. Fitzgeralda, Jr Charles Kingsley, Stephen D. Umans; Máquinas Eléctricas; McGraw-Hill, 1992.
• Jean Chatelain; Machines Électriques; Traité d'Électricité; Presses Polytechniques Romandes, 1989.
• P. C. Sen; Principles Of Electric Machines And Power Electronics; John Wiley & Sons; 1997.
• Manual teórico práctico instalaciones eléctricas en baja tensión, Schneider Electric.

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Location

Lecture hall and Electrical Engineering laboratories.

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