Sistemas de Conversão de Energia Elétrica

Nowadays, an important part of the energy conversion is done by solid-state semiconductor power devices and circuits together with control
systems. Therefore, power electronics has become a fundamental technology critical for the development of energy conservation,
especially for integration of renewable energy production, modernization of energy infrastructures, sustainable transportation and drives,
industrial automation, and others. It serves as a technology driver for future intelligent systems with communication capabilities offering
significant energy-saving potential in many diverse sectors.
The methodologies adopted in this course seek to provide students with a globalized view of the technological challenges associated with
this fundamental change in energy conversion. Theoretical lectures and laboratory classes, joint discussions and group work, seek to
provide students with the concepts necessary to identify the topologies, their operating principle, impact and their role inside a more
complex energy conversion system.
It is intended to provide students with a simplified but global vision. Thematization and problematization will be a way to combine concepts
with a more practical and closer view of reality, stimulating students to do some research on applications related to the syllabus. The focus
in the course is on the identification and analysis and to a lesser extent on design. Laboratory classes will help students to unveil the course
context by addressing simulation and experimental implementation carried out in group, covering the topics addressed in the theoretical
classes.

The objective of this course is to familiarize students with the concepts of electronic energy conversion and correspondent topologies, key
applications, role and challenges. Students should develop sufficient skills for the identification, simple planning, development and
simulation of electronic conversion systems including grid impact. First the principles of power conversion with switching circuits are treated
as well as main power electronics devices. Next the basic circuits of power electronics are explained, including ac-dc converters (diode
rectifiers), and dc-ac converters (inverters). Related issues such as methods of analysis and simulation, distortion and power quality,
modulation, are treated in conjunction with the basic or cascaded circuits. A brief introduction to dc-dc converters will be given. The students
shall understand the role of the several studied converters, be able to explain and discuss the systems by providing examples of
applications.

1. Electrical energy conversion: AC-DC, DC-AC and DC-DC conversion, concepts, topologies and types of semiconductors, associated
power and frequency levels.
2. Electronic conversion systems: objectives and application examples.
3. Understanding nonlinear load, power factor, total harmonic distortion, point of common coupling. Standards.
4. AC-DC converters: single-phase and three-phase rectifiers, grid impact.
5. DC-AC Converters: single-phase and three-phase inverters, modulation strategies, industrial applications and grid connection.
3. DC-DC converters: topologies and applications.
5. Modelling and simulation of electrical energy conversion systems.

NAO