increase efficiency and reliability of 24V,150A AC/DC Switch Mode Power SupplyKey accomplishments  Improved converter efficiency from 89% IGBT based converter to 96.5% using SiC MOSFETs by reducing switching losses Increased operating temperature from 70°C to over 150°C  Reduced number of components used  Low cost

Make a proposal of wind farm in Holland and considering somedifferent ways of optimizing electrical power transmission.In particular, it will focus on identifying the electrical flow of power along the individual cables that connect the wind turbines including the connection to the public grid.The case is an existing windfarm where the existing 8 windturbines (Vestas) will bereplaced by 6 new ones (Enercon). The windparc is called “Hondstocht”.The locations of the new turbines are pre-defined as a result of earlier selectedcriteria.A selection of the most sufficient single line set-up, withcorrect cable sizing (type, cross-section, single or multi core) based on short circuitcalculations, loadflow and maximum acceptable voltage drop. These calculations was executed with the tool VISION. Calculations was made for 2 solutions; copper (Cu) type cables and Aluminium (Alu ) type cables. The most economical type was preferred ; the switchgear choice was Eaton brand for the grid-connection for technical/economical reason.Some alternative solutions was also investigated in relation to increasing the size ofcables and relocating the grid-connectionKey accomplishments  Evaluated a concept for an offshore wind farm HV-DC connection; transmitted 400MVA, 60km distance to shore, controlled for grid interface (voltage/PF-control and short circuit capacities)  Recommended manufacturers besides current market leaders

 Designed and built an active rectifier for automotive alternator using power FETs and comparators  Software: Cadsoft, EAGLE PCB, LTspice Key accomplishment  Reduced rectifier power loss by 64.7% by controlling power FETs and comparators  Reduced cost

 Redesigned 210RD power print card in power distribution board for its UPS range of products Key accomplishments  Increased input and output by designing an efficient and reliable system  Implemented protective measures in the design to detect over-voltage, under-voltage and over-current conditions