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Full-Text Articles in Engineering
Passive And Active Battery Balancing Methods Implemented On Second Use Lithium-Ion Batteries, Walter Bartek
Passive And Active Battery Balancing Methods Implemented On Second Use Lithium-Ion Batteries, Walter Bartek
Masters Theses
As the number of electric vehicles (EVs) increases, the number of used battery packs that require disposal increases; however, many of these packs still have useful capacity and can be repurposed. When using repurposed large lithium-ion battery packs, deviations between cells within a pack become problematic. These deviations result in a pack that is unbalanced, affecting performance and proving potentially hazardous when charging. Consequently, a battery management system (BMS) is needed. To provide safety, the BMS in this paper monitors and controls the operation of the battery pack. In addition, it controls the redistribution of charge between the cells within …
Power Optimization Of Solar Powered Standalone Wireless Sensor System, Rajan Amatya
Power Optimization Of Solar Powered Standalone Wireless Sensor System, Rajan Amatya
Masters Theses
Wireless sensor systems are common in applications where harsh environmental conditions or remote locations make it difficult to run wires. Having these sensor systems self-powered is essential as it is difficult for battery replacement. Using solar as an alternative source of energy can be a medium to charge the battery in such scenarios. With an increasing number of portable devices powered by battery; more and more research is focused on low-power design technique. For this thesis, a microcontroller (Texas Instruments MSP432) was used along with a digital sensor (Bosch BME280) to provide temperature, pressure and humidity information, and Wi-Fi module …
Modelling The Financial Effects Of Naïve Neutral Zone Limits On Energy Storage Systems Participating In Midwest Iso Energy Markets Under Frequency Regulation Prioritization Policies, Patrick J. Mccarthy
Modelling The Financial Effects Of Naïve Neutral Zone Limits On Energy Storage Systems Participating In Midwest Iso Energy Markets Under Frequency Regulation Prioritization Policies, Patrick J. Mccarthy
Masters Theses
Battery Energy Storage Systems (BESS) participating in frequency regulation services in MISO (Midcontinent Independent System Operator) energy markets do so by charging from and discharging to the bulk electrical grid to satisfy power demands. Frequency regulation can demand a high energy throughput from a BESS, causing electrochemical aging. The aging of a BESS must be controlled to within financially feasible limits. MISO has proposed new frequency regulation prioritization policies that enable a BESS to manage its own aging by setting its acceptable State of Charge (SOC) range, called its neutral zone. MISO will seek to prioritize a BESS’ regulation so …
Development Of A Control System For A Power Wheelchair Trainer, Stewart James Hildebrand
Development Of A Control System For A Power Wheelchair Trainer, Stewart James Hildebrand
Masters Theses
The development of a Power Wheelchair Trainer for use by individuals with severe motor, cognitive, and communication deficits is described. These individuals, who are limited in their ability to use self-initiated mobility, are typically not considered to be candidates for power wheelchair use. The Power Wheelchair Trainer provides a motorized platform that allows a manual wheelchair to be temporarily converted into a power wheelchair, thereby permitting these individuals to practice using powered mobility while optimally positioned in their own customized seating systems. To accommodate the needs of these individuals, the Power Wheelchair Trainer incorporates additional control features not available in …