Retention state-enabled and progress-driven energy management for self-powered nonvolatile processors

2017 ◽  
Author(s):  
Zhiyao Gong ◽  
Keni Qiu ◽  
Dongqin Zhou ◽  
Weiwen Chen ◽  
Yuanchao Xu ◽  
...  
Keyword(s):  
Energy Management ◽  
Self Powered

Energy management based on fractional open circuit and P-SSHI techniques for piezoelectric energy harvesting

2019 ◽  
Vol 86 (1) ◽  
pp. 14-24 ◽  
Author(s):  
Manel Zouari ◽  
Slim Naifar ◽  
Ghada Bouattour ◽  
Nabil Derbel ◽  
Olfa Kanoun
Keyword(s):  
Energy Harvesting ◽  
Energy Management ◽  
Open Circuit ◽  
Maximum Efficiency ◽  
Piezoelectric Energy Harvesting ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Piezoelectric Energy ◽  
Self Powered ◽  
Power Point

AbstractSelf-powered energy management circuits make energy harvesting converters more efficient and more reliable. This paper presents an improvement of a Maximum Power Point Tracking (MPPT) technique applied on a Parallel Synchronized Switch Harvesting on Inductor (P-SSHI) technique for piezoelectric vibration converters. The aims are to detect the unstable vibrational state, optimize the output voltage and maximize the output power of the piezoelectric transducer.First, the P-SSHI technique is implemented without an MPPT technique. Then, an MPPT technique based on Fractional Open Circuit (FOC) voltage method is implemented. An improvement of the FOC method is proposed to enhance the capability of the Piezoelectric Energy Harvesting (PEH) system. The comparison between different simulation results shows that by using the same input parameters, the maximum efficiency for the PEH system based on the P-SSHI technique implemented without MPPT is 8.82 % whereas the maximum efficiency of the system based on the (FOC) voltage MPPT method is 13.77 %. A significant improvement of the PEH system is obtained by using the modified (FOC) method, where the efficiency reached 24.59 %.

Efficient energy management by exploiting retention state for self-powered nonvolatile processors

2018 ◽  
Vol 87 ◽  
pp. 23-35 ◽  
Author(s):  
Keni Qiu ◽  
Zhiyao Gong ◽  
Dongqin Zhou ◽  
Weiwen Chen ◽  
Yuanchao Xu ◽  
...  
Keyword(s):  
Energy Management ◽  
Efficient Energy ◽  
Self Powered

scholarly journals Theoretical and experimental analysis of thermal energy management system of air source self-powered electric gas generator

2020 ◽  
Vol 24 (5 Part B) ◽  
pp. 3395-3403
Author(s):  
Hui Liu ◽  
Zhihao Zhang ◽  
Shuang Wu
Keyword(s):  
Gas Turbine ◽  
Energy Management ◽  
Thermal Energy ◽  
Management System ◽  
Energy Management System ◽  
Gas Generator ◽  
Auxiliary Equipment ◽  
Variable Flow ◽  
External Power ◽  
Self Powered

In order to solve the problem that the auxiliary equipment of electric gas turbine can operate only by relying on external power, and realize the purpose that auxiliary equipment of electric gas turbine can operate independently without the external power grid, in this research, a management system of air source self-powered electric gas generator is proposed. Firstly, the process of the thermal energy management system of the air source self-powered electric gas generator is introduced, and the thermodynamic theory of the thermal energy management system of the air source self-powered electric gas generator is analyzed. Then, the experimental conditions of air source self-powered electric gas generator are introduced. Finally, the results of variable speed and terminal variable flow in heating condition and terminal variable flow in cooling condition of the thermal energy management system of air source self-powered electric gas generator are analyzed. The results show that whether the thermal energy management system of air source self-powered electric gas generator studied in this research is in heating or cooling conditions, both the output power of the engine and the power of the compressor increase with the increase of the rotating speed. It can be concluded from the variable flow results in heating conditions that the smaller the end flow is, the smaller the output power of the engine will be. In this way, the loss of heat transfer efficiency of the plate can be reduced as much as possible, and the users? demand for heat can be met.

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