Research

Title: Islanding Detection Methods for Microgrids

June 7th, 2011 – Microgrids are more complex that one distributed generator. Coordination controls are needed for the dynamic interactions of many distributed generators working as one unit. In addition to these controls, microgrid level islanding detection methods are needed at the microswitch to act on voltage and frequency variations that could potentially disturb the reliability of the microgrid. My master’s thesis explores the islanding detection literature, expanding it into the microgrid realm, and proposing harmonic analysis to gain more insight into the actions occuring at the microgrid’s electric utility connection during abnormal events. The IEEE 1547 standard is used throughout this thesis, and this thesis could provide insights into planning for the next stage of the IEEE 1547 standard – the IEEE “microgrid” standard or IEEE 1547.4 “Draft Guide for Design, Operation, and Integration of Distributed Resource Island Systems with Electric Power Systems.”

Title: Reuse of Post-Consumer E-Waste for Low Cost Micropower Distribution (Conference Paper, Global Humanitarian Technology Conference (GHTC), Seattle, WA, 2011. This paper details the implementation of the Microformer at a demonstration facility in Madison, WI)

October 30th, 2011 – Abstract – A novel medium voltage distribution system to electrify rural areas in developing nations using post consumer resources is presented in this paper. Using transformers repurposed from discarded microwave ovens to form a medium voltage micro grid, power may be distributed over an area of a few square kilometers while interconnecting a wide variety of generation sources and storage at a fraction of the cost of traditional systems. Microwave oven transformers (MOTs) are systematically characterized for optimal performance in these cases and construction guidelines are provided. A candidate distribution system using MOTs was constructed to deliver power from a small wind turbine to a small building at a horticulture field station. Results from this demonstration project are provided.

Title: SAGE CLC Proposal – The Microformer

March 25th, 2010 – This report was submitted to the 2010 Climate Leadership Challenge. I was one of three authors (Patricio, Dan, and myself). We won the CLC competition, and continue to work on our Microformer idea, trying to expand the idea to other groups and to other electrical power system components.

Title: A Comparison of Salient and Nonsalient Pole Line-Start Permanent Magnet Synchronous Machines (ECE 711, UW-Madison, unpublished, not peer reviewed)

May 7th, 2010 – Abstract – Saliency affects the starting performance of line-start permanent magnet synchronous machines (LS-PMSM). Some of these effects, including differences in torque, speed, and synchronization time characteristics, are detailed in this paper. Additionally, specific attention was given to the performance of LS-PMSM right before synchronization – a period of time when this type of machine “pulls-in” to the synchronous speed.

Title: Federal Energy Technology Deployment Policies Since the 101st United States Congress (TRAN PU 725, UW-Madison, unpublished, not peer reviewed)

December 7th, 2010 – This final report was complete for my Transportation and Public Utilities 725 class at UW-Madison. The report summaries Energy Technology Deployment barrier theory, outlines the main energy related federal statutory law since ~1990, and dives into specific policies within these laws in the reference from of ETD barrier theory.

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