Electrical Energy Conversion

Recommended Prerequisites

Electric circuits and Electromagnetism

Teaching Methods

In this course, teaching is based on theoretical and theoretical-practical classes. In the lectures, the concepts and fundamental techniques are presented and discussed. In theoretical-practical classes several typical problems are solved analytically and, in some cases, the respective solutions are confirmed by means of simulations.

Learning Outcomes

In this course, basic skills for the analysis and understanding of the operating principle of electromagnetic devices, electrical and/or magnetic circuits, electrical transformers, power factor correction techniques in industrial plants, electromechanical energy conversion systems and AC and DC rotating machines are developed. It is also intended that students acquire skills in analysis and synthesis, written communication, problem solving, critical thinking, independent learning and practical application of theoretical knowledge.

Work Placement(s)

No

Syllabus

Review of the basic laws of electromagnetism. Direct and alternating current/voltage systems. Insulating, conductive and ferromagnetic materials. Resistance, inductance/inductor and capacitance/capacitor. Hall effect. Skin effect. Permanent magnets. Magnetic circuits. Self and mutual inductance. Losses in conductive and ferromagnetic materials. Efficiency of a device/equipment. Approximate thermal models for electromagnetic devices. Constitution, operating principle and equivalent circuit of transformers and autotransformers. Connection modes of three-phase transformers. Power factor correction in industrial plants. Electromechanical energy conversion principles with linear and rotating movement. Constitution and operating principle of AC synchronous and asynchronous machines. Constitution, operating principle, equivalent circuit and main characteristic curves of DC machines with different types of excitation.

Head Lecturer(s)

André Manuel dos Santos Mendes

Assessment Methods

Continuous assessment
Frequency: 100.0%

Final assessment
Exam: 100.0%

Bibliography

B. S. Guru, H. R. Hiziroglu, “Electric Machinery & Transformers”, Oxford Univ. Press, 3rd Ed., 2000.

S. Chapman, Electric Machinery Fundamentals, 5th Ed., McGraw-Hill, 2011.

A. Fitzgerald, C. Kingsley, S. Umans, Electric Machinery, 6th Ed., McGraw-Hill, 2002.

W. H. Hayt, “Engineering Electromagnetics”, 8th Ed., McGraw-Hill, 2011.

Slides disponibilizados pelo responsável da unidade curricular