scholarly journals Wearable Human Motion and Heat Energy Harvesting System with Power Management

2018 ◽  
Author(s):  
Juris Blums ◽  
Ilgvars Gornevs ◽  
Galina Terlecka ◽  
Vilnis Jurkans ◽  
Ausma Vilumsone
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Human Motion ◽  
Heat Energy ◽  
Energy Harvesting System

A Power Management Integrated System for Biomass-based Marine Sediment Energy Harvesting

2014 ◽  
Vol 23 (01n02) ◽  
pp. 1450012 ◽  
Author(s):  
Guoxian Huang ◽  
Ridvan Umaz ◽  
Udayarka Karra ◽  
Baikun Li ◽  
Lei Wang
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Integrated Circuit ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Integrated System ◽  
Cmos Process ◽  
Energy Harvesting System ◽  
Metabolic Activities ◽  
Sustainable Power

This paper presents the design of an underwater energy harvesting system, which would provide persistent and sustainable power supply for remote underwater sensing and surveillance devices. The system consists of Distributed Benthic Microbial Fuel Cell (DBMFC) and the associated power management integrated circuit. The DBMFC exploits bacterial metabolic activities associated with the redox reaction to generate electrical energy directly from biodegradable substrates. The power management circuit collects the energy harvested by the DBMFC and boosts the output voltage to a sufficient and stable level for loads such as sensor devices. Simulation results of the power management system in a 90nm CMOS process demonstrate the expected functions and the significant improvement in energy conversion efficiency.

scholarly journals Design of New Power Management Circuit for Light Energy Harvesting System

Sensors ◽  
2016 ◽  
Vol 16 (3) ◽  
pp. 270 ◽  
Author(s):  
Issa Jafer ◽  
Paul Stack ◽  
Kevin MacNamee
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Light Energy ◽  
Energy Harvesting System

scholarly journals Design and Experimental Evaluation on an Advanced Multisource Energy Harvesting System for Wireless Sensor Nodes

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Hao Li ◽  
Gaofei Zhang ◽  
Rui Ma ◽  
Zheng You
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Power Supply ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Low Power Consumption ◽  
Wireless Sensor Nodes ◽  
Lithium Polymer Battery ◽  
Energy Harvesting System ◽  
Polymer Battery

An effective multisource energy harvesting system is presented as power supply for wireless sensor nodes (WSNs). The advanced system contains not only an expandable power management module including control of the charging and discharging process of the lithium polymer battery but also an energy harvesting system using the maximum power point tracking (MPPT) circuit with analog driving scheme for the collection of both solar and vibration energy sources. Since the MPPT and the power management module are utilized, the system is able to effectively achieve a low power consumption. Furthermore, a super capacitor is integrated in the system so that current fluctuations of the lithium polymer battery during the charging and discharging processes can be properly reduced. In addition, through a simple analog switch circuit with low power consumption, the proposed system can successfully switch the power supply path according to the ambient energy sources and load power automatically. A practical WSNs platform shows that efficiency of the energy harvesting system can reach about 75–85% through the 24-hour environmental test, which confirms that the proposed system can be used as a long-term continuous power supply for WSNs.

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