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37523 - Electric Energy Conversion Systems (2nd Cycle)

Academic Year 2012/2013

  • Moduli: Gabriele Grandi (Modulo 1) Michele Mengoni (Modulo 2)
  • Teaching Mode: Traditional lectures (Modulo 1) Traditional lectures (Modulo 2)
  • Campus: Cesena
  • Corso: Second cycle degree programme (LM) in Electronics and Telecommunications Engineering for Sustainable Development (cod. 8199)

Learning outcomes

Basic of electromechanical energy conversion, electrical machines and drives. Power electronics for electric energy conversion with particular reference to renewable energy sources.

Course contents

Part I - Electric energy static conversion

  • Review of most common power electronic devices for static energy conversion: Diodes, MOSFET, IGBT.
  • Configurations of basic DC / DC converters: buck, boost, buck-boost.
  • Modulation Technique for PWM DC / DC converters.
  • Advanced configuration for DC / DC converters: half-bridge and full bridge, and flyback.
  • Voltage and current regulation on DC / DC converters.
  • Uncontrolled diode rectifier AC / DC and Power filter PFC .
  • Single-phase inverters, PWM control technique.
  • Three-phase inverters, PWM control technique. Principle of current control.

Part II - Electromechanical Energy Conversion

  • Principles of electromechanical energy conversion.
  • DC machine. Torque expression. Mechanical characteristic. Motor and generator operation. Principle of torque and speed control.
  • Synchronous machine. Torque expression. Motor and generator operation at constant and variable speed.
  • Induction machine. Torque expression. Mechanical characteristic. Motor and generator operation

Part III - Applications

  • Power control in doubly fed induction machines.
  • Power control in synchronous and brushless machines.
  • Principles of wind energy conversion. Conventional wind energy conversion systems. Micro-wind systems. Power grid connection.
  • Overview of photovoltaic energy conversion systems. Structure of a photovoltaic field. Power converters for grid connection. Advanced photovoltaic technologies.

Readings/Bibliography

The course discusses and summarizes several topics, and therefore handouts prepared by the teacher will be distributed directly to the student. It also reported the following reference text

Power Electronics, Mohan Ned; Undeland Tore M.; Robbins William P

Assessment methods

Oral exam. It can be taken in English also.

Office hours

See the website of Gabriele Grandi

See the website of Michele Mengoni