S
Shengyi Liu
Researcher at University of South Carolina
Publications - 79
Citations - 3060
Shengyi Liu is an academic researcher from University of South Carolina. The author has contributed to research in topics: Photovoltaic system & Battery (electricity). The author has an hindex of 17, co-authored 79 publications receiving 2900 citations.
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Dynamic lithium-ion battery model for system simulation
TL;DR: In this article, the authors present a complete dynamic model of a lithium ion battery that is suitable for virtual prototyping of portable battery-powered systems, based on publicly available data such as the manufacturers' data sheets.
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Power and life extension of battery-ultracapacitor hybrids
TL;DR: In this article, the performance of a battery-ultracapacitor hybrid power source under pulsed load conditions is analyzed using simplified models, and the authors show that peak power can be greatly enhanced, internal losses can be considerably reduced, and that discharge life of the battery is extended.
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Power enhancement of an actively controlled battery/ultracapacitor hybrid
TL;DR: In this paper, an actively controlled battery/ultracapacitor hybrid has been proposed to achieve higher specific power while reducing battery current and its internal loss, which can be scaled to larger or smaller power capacities for a variety of applications.
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Dynamic Multi-Physics Model for Solar Array
Shengyi Liu,Roger A. Dougal +1 more
TL;DR: In this paper, an approach to model the solar cell system with coupled multiphysics equations (photovoltaic, electro-thermal, direct heating and cooling processes) within the context of the resistive-companion method in the Virtual Test Bed computational environment is presented.
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Power controller design for maximum power tracking in solar installations
TL;DR: In this article, the problem of optimal power control of a nonlinear time-varying system is reduced to an ordinary problem of dynamic system stability in state space by applying MPP conditions in controller design.