The University of Illinois Power and Energy group has kept on innovating with PECI 2017 in our eighth year of this student-organized and-run conference. This year we met for two full days on Thursday and Friday, heard from four keynote speakers, took in two detailed tutorials, and held a poster session with 14 posters (undergrads). […]
High-Frequency Air-Core Permanent-Magnet Motor
Andy Yoon In response to global aviation’s growing fuel needs (over $100 billion per year) and carbon impact (780 million tons of CO2 per year), many commercial efforts have been launched in the last few years to develop more efficient hybrid-electric airplanes. Studies show that commercial transport aircraft […]
Distributed Voltage Regulation of Islanded Inertialess AC Microgrids with Lossy Networks
Madi Zholbaryssov with adviser A. Dominguez-Garcia In this research, we propose a distributed controller for voltage regulation in islanded ac microgrids with lossy lines and present stability analysis without assuming decoupled operation of the frequency and voltage controllers; the frequency controller achieves the active power load sharing by driving the power ows to a […]
Mechanical Analysis of a high-speed motor
Lijun Zheng with adviser K. Haran This project goal was to refine our motor’s mechanical design in three areas: deflection/expansion, airflow, and vibration. To meet these goals, we employed ANSYS simulation software and collaborated with Dr. Ahmed Taha in the National Center for Supercomputing Applications. Using ANSYS mechanical simulations, as shown in Figure 10, we […]
Design of Modular and Robust Control Systems for High-Specific-Power Electric Machines
Xiaolong Zhang with adviser K. Haran This work is motivated by recent trends to introduce electric machines and drives into the propulsion system of next-generation aircraft. A key machine design metric crucial to system optimization is specific power, or, power-to-mass ratio. High-speed, multiple-pole, slotless PM machine designs are capable of minimizing mass and maximizing specific […]
Cycloid Electric Machines for Robotic Applications
CEME Collaborator Professor Julia Zhang and Rui Liu – Oregon State University The project objective is to verify the feasibility of a proposed robotics actuator shown in Figure 14, a cycloid electric machine that integrates an ac electric machine and a cycloid gear drive so that the size and weight of the conventional robotic leg actuation […]
High-Frequency, High-Pole-Count Design for Improving Specific Power of Electric Machines
Andy Yoon with adviser K. Haran A number of emerging applications require high specific power electrical machines and drives, especially for mobile systems. Weight-sensitive applications such as aircraft motors and generators achieve this through aggressive cooling and high speed. In the adjacent field of power electronics, a major trend in recent years has been to […]
Multi-Physics Optimization of High-Frequency Air-Core Permanent-Magnet Motor for Aircraft Application
Xuan (Melody) Yi with Prof. Kiruba Haran The current aviation industry demands environmentally friendly and fuel-efficient aircraft to be sustainable. It has been theoretically proved that superconducting machines can power electric airplanes to carry hundreds of people. These machines apply superconducting technology to produce dramatically high flux density and high current density, and thus can […]
A Resonant Switched-Capacitor based 4-to-1 Fixed Ratio Bus Converter with Extreme Efficiency and Power Density
Zichao Ye with advisor Prof. Robert Pilawa-Podgurski Data centers continue to consume a huge amount of energy as the demands of information processing continuously increases. Therefore, the performance improvement in power conversion (especially of the low-voltage stages) can have large benefits. A good candidate for this performance-driven application is the hybrid switched-capacitor (SC) converter, which […]
Adaptive Coordination of Distributed Energy Resources in Lossy Power Distribution Systems for Frequency Regulation
PhD student Hanchen Xu with advisors A. D. Domínguez-García and P. W. Sauer Frequency regulation is utilized in a power system to track the moment-to-moment load fluctuations in near real-time and ensure generation and load are balanced in each control area. Alternative to conventional regulation generators, distributed energy resources (DERs) can also aggregately provide such services […]