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Hybrid Electric Vehicle Energy Management Strategy With Consideration Of Battery Aging, Bin Zhou
Hybrid Electric Vehicle Energy Management Strategy With Consideration Of Battery Aging, Bin Zhou
Dissertations, Master's Theses and Master's Reports
The equivalent consumption minimization strategy (ECMS) is a well-known energy management strategy for Hybrid Electric Vehicles (HEV). ECMS is very computationally efficient since it yields an instantaneous optimal control. ECMS has been shown to minimize fuel consumption under certain conditions. But, minimizing the fuel consumption often leads to excessive battery damage. The objective of this dissertation is to develop a real-time implementable optimal energy management strategy which improves both the fuel economy and battery aging for Hybrid Electric Vehicles by using ECMS. This work introduces a new optimal control problem where the cost function includes terms for both fuel consumption …
Optimization And Control Of An Array Of Wave Energy Converters, Jianyang Lyu
Optimization And Control Of An Array Of Wave Energy Converters, Jianyang Lyu
Dissertations, Master's Theses and Master's Reports
This study explored optimal configuration of both the array layout and the dimension of each WEC in the array. The array contains heaving buoys with full interaction and exact hydrodynamics. Optimization of dimension was done on each WEC in the array with a given optimal layout, and a higher q-factor was achieved. Both impedance matching optimal control and derivative control were employed, which provides both theoretical maximum energy and a more realistic case. Then the work was expanded to optimization of both the array layout and the dimension of each WEC in the array. An average of 39.21% higher q-factor …