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Power electronic thesis


power electronic thesis

device and has investigated the impact of parasitic inductance of the layout on the electrothermal performance. Examples of studied systems include: electrical drives, single- and three-phase grid interfaces, active filters, uninterruptible power supplies and custom power converters for use in medium-voltage utility grids. The result is that both transistors are switching on in the same phase leg. Since the body diode is not designed to operate under such conditions, the electrothermal robustness of SiC body diode is investigated by simulating parasitic BJT latch-up that results from hard current commutation under high dV/dt. Power Electronic Components, this area includes both power semiconductors and passive components which together constitute the basic building blocks for construction of power electronic converters. One of the major advantages of SiC mosfet is the possibility of using their body diodes for reverse current conduction, thereby obviating the need for lossy silicon PiN diodes. SiC mosfet is a potential power device for implementing EV drivetrain inverters. The other problem which is addressed in this research is modelling the switching transients of parallel connected igbts for the purpose of delivering high current conduction capability. In this research, the unintentional switching of igbts and the resulting short circuit current surge passing through the devices as a consequence of reducing the dead-time as well as increasing the switching rate is investigated and modelled. This is due to the discharge of the Miller capacitance which feeds back a current into the gate of the transistor.

Research and PhD Thesis Projects Power Electronic Systems



power electronic thesis

Format of File: pdf, extent: xxvi, 321 leaves : illustrations, charts. Micro controllers, digital signal processors or fpgas. Some of the key disciplines in this area are: analysis and design of power circuits, design of auxiliary circuits (gate drivers, measuring circuitries etc.) and hardware-near control (modulation techniques) of switching converters. The primary goal of using SiC mosfets is to enable high frequency switching since the significantly lower switching losses coupled with the high dI/dt and dV/dt can increase the power density. The emergence of the hybrid electric vehicle and electric vehicles (HEV and EV) requires the reliability assessment of power electronic devices used in the inverters. PhD thesis, University of Warwick. The section focuses on: - essay on merits and demerits of internet power electronic components - power electronic converters - power electronic systems, including drives. This BJT latch-up under certain thermal conditions is capable of destruction of the device. (Philip.) ; Alatise, Olayiwola.

Semester Projects and Master Theses Power Electronic Systems Control Design for Electronic Power Converters What are the current research areas for pursuing Master Thesis


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