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Full-Text Articles in Engineering
Parametric Study Of Alternative Ev1 Powertrains, Adam Saplin, Andrew Meintz, Mehdi Ferdowsi
Parametric Study Of Alternative Ev1 Powertrains, Adam Saplin, Andrew Meintz, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
The General Motors (GM) EV1 is an electric vehicle originally powered by either a PbA or NiMh battery pack. This paper examines the possibility of alternative powertrain configurations. These alternatives include an ultracapacitor (UC) storage system, fuel cell system with UC storage, and a fuel cell system with a NiMh battery pack. The configurations were simulated using ADVISOR. Parametric tests were performed by varying the size of the energy storage systems. The study of these combinations is followed by an examination of the current art of the hybrid energy storage topologies used to combine battery and ultracapacitor storage. These topologies …
Increased Performance Of Battery Packs By Active Equalization, Jonathan W. Kimball, Brian T. Kuhn, Philip T. Krein
Increased Performance Of Battery Packs By Active Equalization, Jonathan W. Kimball, Brian T. Kuhn, Philip T. Krein
Electrical and Computer Engineering Faculty Research & Creative Works
Battery packs for most applications are series strings of electrochemical cells. Due to manufacturing variations, temperature differences, and aging, the individual cells perform differently. When a complete pack is charged and discharged as a single two-terminal circuit element, some cells are chronically overcharged, undercharged, or overdischarged, all of which act to reduce cell life. The performance and life of the complete pack is limited by the weakest cell. Many methods have been proposed and explored to mitigate this problem. In the present work, a switched-capacitor converter is shown to be a simple and effective method to maintain equal cell or …
Glucose Oxidase (God)-Coupled Amperometric Microsensor With Integrated Electrochemical Actuation System, Jongwon Park, Chang-Soo Kim, Minsu Choi, Shanrui Zhang
Glucose Oxidase (God)-Coupled Amperometric Microsensor With Integrated Electrochemical Actuation System, Jongwon Park, Chang-Soo Kim, Minsu Choi, Shanrui Zhang
Electrical and Computer Engineering Faculty Research & Creative Works
Recent developments for biosensors have been mainly focused on miniaturization and exploratory use of new materials. It should be emphasized that the absence of a novel "in-situ self-calibration/diagnosis technique" that is not connected to an external apparatus is a key obstacle to the realization of a biosensor for continuous use with minimum attendance. In order to address this issue, a novel solid-state glucose oxidase-coupled amperometric biosensor with integrated electrochemical actuation system has been designed and validated. There are two key components of the proposed glucose biosensor: solid-state GOD-coupled thin-lm amperometric sensing element and O2 depleting/saturating built-in electrochemical actuator. The …