2024
Electrical Machines
Name: Electrical Machines
Code: EME13013L
6 ECTS
Duration: 15 weeks/156 hours
Scientific Area:
Electrotechnical Engineering
Teaching languages: Portuguese
Languages of tutoring support: Portuguese, English
Regime de Frequência: Presencial
Sustainable Development Goals
Learning Goals
Students will obtain useful skills to understand the Electrical Machines basic functioning principles, particularly related with electromechanical energy conversion. They will know the main characteristics of electrical machines different types. To know how to specify them for each application field. Students will also acquire competences that will allow them to pursuit and increase their studies and knowledge.
Contents
1. Introduction to the Study of Electric Machines
Review of electromagnetism concepts and circuit analysis.
Principles of electromechanical energy conversion.
2. Transformer
Single-phase transformer.
Three-phase transformer.
Special transformers. Autotransformer. Measuring transformers.
3. Direct Current (DC) Machines
Introduction - constructive aspects.
Generator operation and Motor operation. Classification and characteristics. Fields of application.
4. Asynchronous Machine
Constructive aspects and operating principle.
Three-phase induction machine.
Single-phase induction machine.
Speed control.
5. Synchronous Machine
Constructive aspects and operating principle.
Study of the alternator.
Synchronous motor.
6. Small Motors
DC motors. Servo motors. Stepper motors.
Pulse Width Modulation (PWM). H-bridges. Position encoders.
Speed, direction, and position control with microcontrollers.
Review of electromagnetism concepts and circuit analysis.
Principles of electromechanical energy conversion.
2. Transformer
Single-phase transformer.
Three-phase transformer.
Special transformers. Autotransformer. Measuring transformers.
3. Direct Current (DC) Machines
Introduction - constructive aspects.
Generator operation and Motor operation. Classification and characteristics. Fields of application.
4. Asynchronous Machine
Constructive aspects and operating principle.
Three-phase induction machine.
Single-phase induction machine.
Speed control.
5. Synchronous Machine
Constructive aspects and operating principle.
Study of the alternator.
Synchronous motor.
6. Small Motors
DC motors. Servo motors. Stepper motors.
Pulse Width Modulation (PWM). H-bridges. Position encoders.
Speed, direction, and position control with microcontrollers.
Teaching Methods
The teaching method is based on theoretical, practical and laboratory classes.
The objective of the practical classes is to consolidate the knowledge acquired in the theoretical classes.
The laboratory classes place emphasis on the prediction of the experimental results using the models introduced in the theoretical classes.
Student tutoring available outside the 2 times per week. Email and Zoom available for basic questions.
The objective of the practical classes is to consolidate the knowledge acquired in the theoretical classes.
The laboratory classes place emphasis on the prediction of the experimental results using the models introduced in the theoretical classes.
Student tutoring available outside the 2 times per week. Email and Zoom available for basic questions.
Assessment
The assessment elements are graded using the range [0,20].
The following are the assessment components:
- [L] Laboratory Component - Minimum grade of 9.5 (30%)
- [F1] Test 1 - Minimum grade of 8.0 (23.333%)
- [F2] Test 2 - Minimum grade of 8.0 (23.333%)
- [F3] Test 3 - Minimum grade of 8.0 (23.333%)
- [Ex] Final Exam (70%)
The student can choose 1 of 2 possible assessment methods, in which the Final Grade [NF] is calculated as follows:
i) CONTINUOUS ASSESSMENT:
NF = (F1 + F2 + F3)/3 × 0.7 + L × 0.3
Pass if NF>= 9.5
Fail if NF < 9.5
ii) FINAL ASSESSMENT:
NF = Ex × 0.7 + L × 0.3
Pass if NF>= 9.5
Fail if NF < 9.5
The following are the assessment components:
- [L] Laboratory Component - Minimum grade of 9.5 (30%)
- [F1] Test 1 - Minimum grade of 8.0 (23.333%)
- [F2] Test 2 - Minimum grade of 8.0 (23.333%)
- [F3] Test 3 - Minimum grade of 8.0 (23.333%)
- [Ex] Final Exam (70%)
The student can choose 1 of 2 possible assessment methods, in which the Final Grade [NF] is calculated as follows:
i) CONTINUOUS ASSESSMENT:
NF = (F1 + F2 + F3)/3 × 0.7 + L × 0.3
Pass if NF>= 9.5
Fail if NF < 9.5
ii) FINAL ASSESSMENT:
NF = Ex × 0.7 + L × 0.3
Pass if NF>= 9.5
Fail if NF < 9.5
Teaching Staff
- Fernando Manuel Tim Tim Janeiro [responsible]
Certificações
