Balachandran Thanatheepan with advisor K. Haran Advanced high-speed permanent magnet synchronous motors (PMSM) have been the subject of recent research for electric propulsion. A NASA-funded inside-out PMSM is designed and developed to demonstrate the concept of high-power density PM machines for commercial electric aircraft. Air-core windings, which are used in this machine design are manufactured […]
Multi-Physics optimization of high-frequency air core permanent magnet motor for aircraft applications
Xuan(Melody) Yi with adviser K.Haran The current aviation industry demands sustainable environmentally friendly and fuel-efficient. It has been theoretically shown 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 reduce weight and volume. Conventional machines […]
Current-control dynamic response and stability analysis in high-speed permanent magnet synchronous machines based on complex state variables
Xiaolong Zhang with advisor K. Haran To achieve benefits similar to those seen in hybrid-/all-electric ground-based and marine vehicles, electric propulsion has been proposed for large commercial aircraft. A high-power, high-speed permanent magnet synchronous machine (PMSM) is being developed to meet the stringent weight requirements in the aircraft application. Figure. 1 shows the architecture of a […]
Control of high-density multi-level motor drive
Chris Barth with advisor R. Pilawa-Podgurski The expansion of electric transportation, and electric or hybrid flight in particular, has accentuated the need for high specific power density (power to weight ratio) electric drive systems. Many high power density electric machines have reduced back iron and high fundamental frequency. This is a challenge for drive development, […]
Solar Variability Reduction in Solar Arrays Using OFF-MPP Tracking and Energy Storage Systems
Jason Galtieri with advisor P.Krein Maximum power point (MPP) tracking is the standard control scheme for photovoltaic (PV) arrays of all sizes. Inverter tracking algorithms work on second to sub-second time scales and can track most naturally occurring irradiance changes, such as moving cloud coverage. Fast response tracking imposes large power swings on the grid which […]