MS student Andrew Freeman with Advisor A. Stillwell The buildup of ice on aircraft poses a significant challenge for the aviation sector. It directly contributes to fatal accidents, compromising air travel safety and necessitating costly, inefficient, and occasionally ineffective deicing methods before and during flights. Adjacent to the development of an electro-thermal pulse dc-dc power […]
Design of a Compact Permanent Magnet Vernier Machine for Portable Medical Applications
MS Student Nina Ayar with Advisor K. Haran The demand for small high-torque machines is steadily increasing due to the growing need for precise, low-cost motors capable of operating in tight spaces, especially in applications such as robotics, automation, and medical devices. Permanent magnet vernier machines (PMVM) are a promising topology, delivering high torque at […]
Portable, Low-field, Open-Bore MRI System
MS student Yaokun Shi with Advisor K. Haran Magnetic resonance imaging (MRI) is widely recognized for its non-invasive nature and ability to generate high-quality, multi-contrast images. Traditionally, enhancing image quality has relied on increasing field strength, but this approach comes with significant costs, high energy demands, and the need for a homogeneous base magnetic field […]
A Contextual Approach to Advance Equity in Electric Utility Decision-making
PhD student Talal Khalid with Advisor K. Haran Maximum demand charges (MDCs) are a well-recognized barrier to the widespread deployment of electric vehicle fast-charging facilities. Multiple solutions to address the problem have been proposed in the literature and practiced by the US electric utility companies (EUCs). However, the technoeconomic dependency of these interventions has come […]
Modulation Depth Maximization for High Phase Count Drives with Emphasis on Variable Pole Operation
PhD student Anuj Maheshwari, MS student Soumil Chaubal, IEEE members Elie Libbos & Debranjan Mukherjee, MS student Debojyoti Mazumdar, and PhD student Parag Bajaj with Advisor A. Banerjee High-phase count machines are well known to have reduced dc bus utilization compared to conventional three-phase drives. High-phase count machines for fault tolerance and variable-pole induction machine […]
Dual-Use of Onboard Chargers to Achieve Controllable DC Bus Voltage for Variable Pole Induction Motors in Traction Applications
PhD student Anuj Maheshwari with Advisor A. Banerjee Figure 10. Torque-speed envelop of EV motors shrinks with decreasing battery SOC for drive trains directly connected to the battery. The power flow architecture in electric vehicles must prioritize high efficiency and power density while consistently delivering the rated torque-speed envelope. In traditional setups, where the battery […]
A Seven-Level Interleaved Hybrid-Active-Neutral-Point Clamped Converter for High-Frequency Low-Inductance Motors
PhD student Arjit Bali with Advisor A. Stillwell Electric vehicle and electric aviation applications demand lightweight electro-mechanical energy conversion, but passive components in the drive system can limit power density. Slotless machine constructions offer high power density but result in very low per-phase inductance, necessitating additional filtering that diminishes the power density benefits. Additionally, the […]
Current-Sourced Hybrid Switched-Capacitor Converter for Data Center PoL Power Delivery
PhD student Aria Delmar with Advisor A. Stillwell With power delivery constraints becoming a pressing concern for processor power delivery, integrating the PoL converter into the processor package would allow for a simplified power delivery network and reduce power delivery losses. However, integrating these converters has been difficult to realize. Previous hybrid switched-capacitor power converters […]
Assessing Reliability of a SiC MOSFET During Converter Operation
PhD student Furkan Karakaya with Advisor A. Banerjee Silicon Carbide (SiC) MOSFETs are being widely adopted in the industry as a viable substitute for conventional power transistors, due to their superior figure-of-merit and compact, efficient power conversion. However, the relatively novel manufacturing technology of these devices raises further questions regarding long-term reliability, as SiC devices […]
Slotless Permanent Magnet Synchronous Machines to Improve Motor Power Density
MS student Michael Stoens with Advisor K. Haran With the rapid adoption of electrification, power density, reliability, and fault tolerance of electric drive systems are becoming increasingly important. The U.S. Department of Energy has established future targets for power density in power electronics, electric motors, and electric tractive drive systems. To meet these targets, research […]