Power Electronics Systems

by using PSpice with Orcad 10 software solve Problem 1 Design an uncontrolled full wave rectifier with the following specifications: a) Input Supply: Single-phase 230 Vrms at 50Hz. Line inductance Ls=4mH. b) Output power: 1.5kW c) Output voltage ripple: 10% d) Current ripple: 10% (+2%) of DC current e) Output is not isolated from the input f) Repeat the design for Ls = 8 mH Problem 2 Show that a three phase 4 wire star connection source with two equal source inductance (Ls = 2.5mH) where each phases are connected to a full-wave uncontrolled rectifier with 11 mF capacitor in parallel with 16 Ohm resistor has a severe neutral current (refer lecture note in rectifier page 53 and 55). Measure the Vpcc and suggest the size of neutral wire. Requirements You have to first do a hand calculation to estimate the components for the design. Then simulate your results using PSpice. Show all the key waveforms. Describe relevant phenomena, if any. All component used must be “realistic”. The more realistic they are in your design, the more credit you deserve. Report A maximum of 15-pages professionally written report, using the standard IEEE format. However I require single column document with 1½ spacing between lines. Appendix is not counted in the 15-page limit. Make sure all important info is available. I’m looking forward for an “in-depthdiscussion of the results” that reflect your understanding and maturity. Grave warning: “Plagiarism” i.e. copying from un-cited source is an offence and will be a subject of severe punishment. I have software to check if you’d copy even a single line from any source. Train yourself to write properly and honestly.