A Dual-Mode Continuously Scalable-Conversion-Ratio SC Energy Harvesting Interface With SC-Based PFM MPPT and Flying Capacitor Sharing Scheme

2021 ◽  
pp. 1-1
Author(s):  
Hyunjin Kim ◽  
Junyoung Maeng ◽  
Inho Park ◽  
Jinwoo Jeon ◽  
Yohan Choi ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Conversion Ratio ◽  
Dual Mode ◽  
Sharing Scheme

Multifunctional Water Drop Energy Harvesting and Human Motion Sensor Based on Flexible Dual-Mode Nanogenerator Incorporated with Polymer Nanotubes

2020 ◽  
Vol 12 (21) ◽  
pp. 24030-24038 ◽  
Author(s):  
Long-Biao Huang ◽  
Wei Xu ◽  
Chenghan Zhao ◽  
Yong-Liang Zhang ◽  
Kai-Leung Yung ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Water Drop ◽  
Human Motion ◽  
Motion Sensor ◽  
Dual Mode ◽  
Polymer Nanotubes

On the performance of a dual-mode non-linear vibration energy harvesting device

2012 ◽  
Vol 23 (13) ◽  
pp. 1423-1432 ◽  
Author(s):  
Roszaidi Ramlan ◽  
Michael J Brennan ◽  
Brian R Mace ◽  
Stephen G Burrow
Keyword(s):  
Energy Harvesting ◽  
Maximum Power ◽  
Ambient Vibration ◽  
Research Trend ◽  
Iron Core ◽  
Dual Mode ◽  
Vibration Energy Harvesting ◽  
Stable Mode ◽  
Linear Generator ◽  
Non Linear

The research trend for harvesting energy from the ambient vibration sources has moved from using a linear resonant generator to a non-linear generator in order to improve on the performance of a linear generator; for example, the relatively small bandwidth, intolerance to mistune and the suitability of the device for low-frequency applications. This article presents experimental results to illustrate the dynamic behaviour of a dual-mode non-linear energy-harvesting device operating in hardening and bi-stable modes under harmonic excitation. The device is able to change from one mode to another by altering the negative magnetic stiffness by adjusting the separation gap between the magnets and the iron core. Results for the device operating in both modes are presented. They show that there is a larger bandwidth for the device operating in the hardening mode compared to the equivalent linear device. However, the maximum power transfer theory is less applicable for the hardening mode due to occurrence of the maximum power at different frequencies, which depends on the non-linearity and the damping in the system. The results for the bi-stable mode show that the device is insensitive to a range of excitation frequencies depending upon the input level, damping and non-linearity.

scholarly journals Light-Based IoT: Developing a Full-Duplex Energy Autonomous IoT Node Using Printed Electronics Technology

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 8024
Author(s):  
Malalgodage Amila Nilantha Perera ◽  
Marcos Katz ◽  
Juha Häkkinen ◽  
Roshan Godaliyadda
Keyword(s):  
Energy Harvesting ◽  
Printed Electronics ◽  
Photovoltaic Cells ◽  
Organic Light Emitting Diodes ◽  
Full Duplex ◽  
Dual Mode ◽  
Communication Performance ◽  
Light Emitting ◽  
Organic Light ◽  
Cost Efficient

The light-based Internet of things (LIoT) concept defines nodes that exploit light to (a) power up their operation by harvesting light energy and (b) provide full-duplex wireless connectivity. In this paper, we explore the LIoT concept by designing, implementing, and evaluating the communication and energy harvesting performance of a LIoT node. The use of components based on printed electronics (PE) technology is adopted in the implementation, supporting the vision of future fully printed LIoT nodes. In fact, we envision that as PE technology develops, energy-autonomous LIoT nodes will be entirely printed, resulting in cost-efficient, flexible and highly sustainable connectivity solutions that can be attached to the surface of virtually any object. However, the use of PE technology poses additional challenges to the task, as the performance of these components is typically considerably poorer than that of conventional components. In the study, printed photovoltaic cells, printed OLEDs (organic light-emitting diodes) as well as printed displays are used in the node implementation. The dual-mode operation of the proposed LIoT node is demonstrated, and its communication performance in downlink and uplink directions is evaluated. In addition, the energy harvesting system’s behaviour is studied and evaluated under different illumination scenarios and based on the results, a novel self-operating limitation aware algorithm for LIoT nodes is proposed.

scholarly journals Dual Mode Boost Converter for Energy Harvesting

2015 ◽  
Vol 19 (4) ◽  
pp. 573-582
Author(s):  
Hyung-Ryul Park ◽  
Jae-Jin Yeo ◽  
JeongJin Roh
Keyword(s):  
Energy Harvesting ◽  
Boost Converter ◽  
Dual Mode

scholarly journals A 920-MHz Dual-Mode Receiver with Energy Harvesting for UHF RFID Tag and IoT

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 1042
Author(s):  
Peiqing Han ◽  
Zhaofeng Zhang ◽  
Yajun Xia ◽  
Niansong Mei
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Radio Frequency Identification ◽  
Supply Voltage ◽  
High Sensitivity ◽  
Cmos Process ◽  
Uhf Rfid ◽  
Dual Mode ◽  
Operating Modes ◽  
On Chip

A low-power dual-mode receiver is presented for ultra-high-frequency (UHF) radio frequency identification (RFID) systems. The reconfigurable architecture of the tag is proposed to be compatible with low-power and high-sensitivity operating modes. The read range of RFID system and the lifetime of the tag are increased by photovoltaic, thermoelectric and RF energy-harvesting topology. The receiver is implemented in a 0.18-μm standard CMOS process and occupies an active area of 0.65 mm × 0.7 mm. For low-power mode, the tag is powered by the rectifier and the sensitivity is −18 dBm. For high-sensitivity mode, the maximum PCE of the fully on-chip energy harvester is 46.5% with over 1-μW output power and the sensitivity is −40 dBm with 880 nW power consumption under the supply voltage of 0.8 V.

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