by Balaji Narayanasamy

Institution: The Ohio State University
Year: 2016
Keywords: Electrical Engineering; EMI Filter, Software, Passive EMI Filter, Active EMIfilter, EMI modeling
Posted: 02/05/2017
Record ID: 2086262
Full text PDF: http://rave.ohiolink.edu/etdc/view?acc_num=osu1461252861


This work is composed of two main parts. The first part includes the development of a tool which can aid a designer to get an idea of the volume of an EMI filter. The tool is developed using MATLAB and also has a GUI. The software can be used to identify the worst case condition based on variety of EMI test results obtained under different design conditions such as various modulation techniques, different input and output cables and therefore can be used with different types of power converters. In this work, the tool is used with a 3 ph. voltage source inverter. The work provides description of the methodology implemented in the software and also illustrates the use of the same using a design example. The effectiveness of the software is also discussed and factors affecting the results predicted by the software are also discussed. The second part of this work involves AEF designs for desktop power adapters. This work is the beginning phase of the effort towards reducing the EMI filter volume by 50% promoting power density of adapters to 20 to 25 W/cu inch. This work presents a detailed review of the works presented in the literature and lists out the challenges that have been partially addressed or not addressed so far. This is followed by selection of filters based on impedance mismatching conditions for DM and CM Active EMI filtering. The work concludes with the behavioral and switching model development for power adapter. Advisors/Committee Members: Luo, Fang (Advisor).