High efficiency power management system for solar energy harvesting applications

2010 ◽  
Author(s):  
Ming-Hung Chang ◽  
Jung-Yi Wu ◽  
Wei-Chih Hsieh ◽  
Shang-Yuan Lin ◽  
You-Wei Liang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Solar Energy ◽  
Power Management ◽  
Management System ◽  
High Efficiency ◽  
Solar Energy Harvesting ◽  
Power Management System

Multi-Source Energy Harvesting Schemes With Piezoelectrics and Photovoltaics on an Avian Bio-Logger Draft

2012 ◽  
Author(s):  
Alexander Schlichting ◽  
Michael Shafer ◽  
Ephrahim Garcia
Keyword(s):  
Energy Harvesting ◽  
Solar Energy ◽  
Power Management ◽  
Management System ◽  
High Energy ◽  
Activity Levels ◽  
Diurnal Cycles ◽  
Piezoelectric Energy ◽  
Solar Energy Harvesting ◽  
Power Management System

Solar energy harvesting possesses relatively high energy and power densities when compared to other energy harvesting methods. However, solar energy harvesting applications are severely limited by diurnal cycles and weather patterns. For biological applications, such as avian bio-loggers, the subject’s activity levels and location introduce further variability into the availability of solar energy. This work focuses on the challenges associated with developing a multi-source energy harvesting solution and overall power management system for an avian bio-logger. It uses an ATmega128RFA1 microcontroller along with lithium batteries and both a solar and piezoelectric energy harvester. The power management system and microcontroller operation were tested using a solar harvester.

scholarly journals 0.18µm-CMOS Rectifier with Boost-converter and Duty-cycle-control for Energy Harvesting

2018 ◽  
Vol 7 (2) ◽  
pp. 161-168
Author(s):  
Roskhatijah Radzuan ◽  
Mohd Khairul Mohd Salleh ◽  
Nuha A. Rhaffor ◽  
Shukri Korakkottil Kunhi Mohd
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Output Power ◽  
Duty Cycle ◽  
Management System ◽  
High Efficiency ◽  
Boost Converter ◽  
Cmos Process ◽  
Rectifier Circuit ◽  
Power Management System

Existing works on battery-less of energy harvesting systems often assume as a high efficiency of rectifier circuit for power management system. In practice, rectifier circuit often varies with output power and circuit complexity. In this paper, based on a review of existing rectifier circuits for the energy harvesters in the literature, an integrated rectifier with boost converter for output power enhancement and complexity reduction of power management system is implemented through 0.18-micron CMOS process. Based on this topology and technology, low threshold-voltage of MOSFETs is used instead of diodes in order to reduce the power losses of the integrated rectifier circuit. Besides, a single switch with the duty-cycle control is introduced to reduce the complexities of the integrated boost converter. Measurement results show that the realistic performances of the rectifier circuit could be considerably improved based on the performances showed by the existing study.

scholarly journals A 30mV input battery-less power management system

2019 ◽  
Vol 8 (4) ◽  
Author(s):  
Jim Hui Yap ◽  
Yan Chiew Wong
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Management System ◽  
Closed Loop ◽  
Low Voltage ◽  
Cmos Process ◽  
Area Network ◽  
Significant Finding ◽  
Thermoelectric Energy Harvesting ◽  
Power Management System

This paper presents a fully-integrated on chip battery-less power management system through energy harvesting circuit developed in a 130nm CMOS process. A 30mV input voltage from a TEG is able to be boosted by the proposed Complementary Metal-Oxide-Semiconductor (CMOS) voltage booster and a dynamic closed loop power management to a regulated 1.2V. Waste body heat is harvested through Thermoelectric energy harvesting to power up low power devices such as Wireless Body Area Network. A significant finding where 1 Degree Celsius thermal difference produces a minimum 30mV is able to be boosted to 1.2V. Discontinuous Conduction Mode (DCM) digital control oscillator is the key component for the gate control of the proposed voltage booster. Radio Frequency (RF) rectifier is utilized to act as a start-up mechanism for voltage booster and power up the low voltage closed loop power management circuit. The digitally control oscillator and comparator are able to operate at low voltage 600mV which are powered up by a RF rectifier, and thus to kick-start the voltage booster.

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