Differential Power Processing for Voltage Regulation of Series-Stacked Processor Cores Dipanjan Das with adviser P. Krein Power delivery to multi-core processors has become increasingly challenging as transistor sizes decrease and operating voltages thereby decrease. With the growing number of cores in each processor, power requirements tend to remain the same, but handling output impedance requirements […]
Dynamic Energy Management Needs in Energy Efficient Buildings Imposed by Stochastic Solar Resources
Dynamic Energy Management Needs in Energy Efficient Buildings Imposed by Stochastic Solar Resources Justin Hughes with adviser A. Domínguez-García Frequency regulation is becoming increasingly important with deeper penetration of variable generation resources. Flexible loads have been proposed as a low-cost provider of frequency regulation. For example, the flexibility of loads with inherent thermal energy storage […]
Dynamic Energy Management Needs in Energy Efficient Buildings Imposed by Stochastic Solar Resources
Dynamic Energy Management Needs in Energy Efficient Buildings Imposed by Stochastic Solar Resources Mark Hagge with adviser P. Krein A discounted cash flow model of solar panel installations was built in Excel to provide a direct, readily understood, and open cost analysis of PV systems. It was used to evaluate the current economic state of […]
Dynamic Energy Management Needs in Energy Efficient Buildings Imposed by Stochastic Solar Resources
Dynamic Energy Management Needs in Energy Efficient Buildings Imposed by Stochastic Solar Resources Yue Cao with adviser P. Krein This project examines various electrical and thermal energy generation, consumption, and storage components in solar-powered energy-efficient buildings. Dynamic management of such energy components is essential given the stochastic solar resources. Emphasis is put on power electronic […]
Electrical Battery Model for Use in Dynamic Electric Vehicle Simulations
Electrical Battery Model for Use in Dynamic Electric Vehicle Simulations Yue Cao with adviser P. Krein Simulation of electric vehicles over driving schedules within a full dynamic electric vehicle simulator requires battery models capable of accurately and quickly predicting state-of-charge (SOC), I-V characteristics, and dynamic behavior of various battery types. An electric battery model utilizing […]
Numerical Modeling of 3D Printed Electric Machines
Numerical Modeling of 3D Printed Electric Machines CEME Collaborator Julia Zhang – Oregon State University This research develops simulations to analyze mechanical performance and reliability of an interior permanent magnet synchronous machine using laser beam melting (LBM), an additive 3D printed metal manufacturing process. Simulations were performed with the finite element tool Abaqus. The simulated […]
Mechanical Design of High-Speed, High- Frequency Air-Core Machine
Mechanical Design of High-Speed, High- Frequency Air-Core Machine Yuanshan Chen with adviser K. Haran A high power density electric machine (8 hp/lb) with integrated high-frequency drives was proposed by Professor Kiruba Haran for the NASA Fixed Wing Project. It is an unconventional inside-out permanent magnet motor with an advanced composite rotor structure. The motor’s cantilever […]
LEARN – Leading Edge Aeronautics Research and the Fixed Wing Project: NASA-Funded Research Grants Won by Professor Kiruba Haran
LEARN – Leading Edge Aeronautics Research and the Fixed Wing Project: NASA-Funded Research Grants Won by Professor Kiruba Haran How can we save 5,000 gallons of jet fuel (with the attendant emissions) every time a Boeing 747 leaves the earth? Professor Kiruba Haran with his CEME colleagues and graduate students is doing research through both […]
High-Efficiency High-Energy-Density Buffer Architecture for Power Pulsation Decoupling in Grid-Tied Applications
High-Efficiency High-Energy-Density Buffer Architecture for Power Pulsation Decoupling in Grid-Tied Applications Shibin Qin with adviser R. Pilawa-Podgurski Power conversion between dc and single-phase ac (inverters and rectifiers) requires an energy buffer for the twice-line-frequency power pulsation. This function is conventionally fulfilled with large electrolytic capacitors that suffer from poor efficiency and a short lifetime. In […]
“Little Box” Challenge
“Little Box” Challenge IEEE and Google announced the “Little Box” challenge in July of 2014 to encourage innovation in inverter technology. The goal is to create a 2 kW, single-phase, air-cooled inverter with a power density roughly 10 times smaller than current commercial products. Competing designs must meet a power density of at least 50 […]