University Of Limerick

Power Electronics


Iowa State Course Substitution

ECpE Tech Elective


Course Info

International Credits: 6.0
Converted Credits: 3.5
Country: Ireland
Language: English
Course Description:

Syllabus: Introduction (examples of typical power conversion applications e.g. a complete computer power supply system block diagram/space craft system, importance of efficiency, comparison linear vs switching supplies, overview key components utilised in power conversion) Switch realisation: semiconductor switches: diodes, Power MOSFETs, Thyristors, GTOs, IGBTs, properties, circuit symbols, comparative characteristics and application areas, power losses in switches. The ideal switch, ripple and switching frequency, conduction losses, switching losses. Switch mode power conversion: basic concepts; role of inductors, capacitors and transformers. Analytical treatment of converters in equilibrium (steady-state converter analysis). Modelling and simulation of converter in steady state (SIMPLIS) Overview conversion topologies (non-isolating buck, boost, buck-boost) Three phase full wave uncontrolled rectifier with inductive loads: circuit diagram, waveforms, output voltage, input current, input harmonics. Single phase full wave thyristor controller rectifier: circuit diagram, waveforms and calculations. Inverters ¿ main concepts, square wave inverters, Sine PWM inverters: circuit diagram, Circuit waveforms, Amplitude modulation index, Frequency modulation index. Variable Speed Drive: Fixed frequency induction motor torque speed characteristic, V/F operation, torque speed capability with V/F drive, typical V/F drive circuit diagram. Continuous v discontinuous conduction mode. Converter dynamics and control (overview small signals models, example topology, transfer functions). Key skill which can be applied broadly. Energy storage and energy transfer components and magnetics (capacitive, inductive, uncoupled, coupled). Modern rectifiers (topologies, harmonics) High power resonant converters HVAC / HVDC Power systems and conversion basic understanding. Harmonics/Flicker/Reactive Power Control. Modelling of power convertors. Low voltage ride-through (wind application) Learning Outcomes: Cognitive (Knowledge, Understanding, Application, Analysis, Evaluation, Synthesis) - Understanding of basic principle of switching circuits. - Understand 3-phase inverters; dc link inverter; forced-commutation thyristor circuits; BJT and IGBT. - Design an AC/DC DC/DC DC/AC circuit. - Ability to design power electronic systems for consuming and generating devices (Renewable energy , wind/marine/hydro) - Ability to integrate energy storage system to power generator.


Evaluation Date:
November 7, 2019
Nathan Neihart

Approved for EE Tech Elective