This module will give students (ECE BE/ME students) an understanding of modern power electronics both at the device/products level and at the renewable energy generation and distribution level. The module is to replace EE4328 Power Electronics and upgrade the content of this module for BE/ME 4th/5th year level 9. This module will be offered to the Master of Engineering in Electronic and Computer Engineering programme using module ID 3299 Power Electronics

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)

- 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.

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Lectures, Tutorials and Labs Use of support simulation software.