Exploring system parameters for viability of energy harvesting technologies

2011 ◽  
Author(s):  
T V Prabhakar ◽  
K Prakruthi ◽  
S Devasenapathy ◽  
H S Jamadagni ◽  
R V Prasad ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
System Parameters

scholarly journals Modeling of Piezoelectric Energy Harvesting from Freely Oscillating Cylinders in Water Flow

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Min Zhang ◽  
YingZheng Liu ◽  
ZhaoMin Cao
Keyword(s):  
Energy Harvesting ◽  
Free Stream ◽  
Piezoelectric Materials ◽  
Load Resistance ◽  
Stream Velocity ◽  
Piezoelectric Energy Harvesting ◽  
Vibratory System ◽  
System Parameters ◽  
Piezoelectric Energy ◽  
Vortex Induced Vibrations

A concept of energy harvesting from vortex-induced vibrations of a rigid circular cylinder with two piezoelectric beams attached is investigated. The variations of the power levels with the free stream velocity are determined. A mathematical approach including the coupled cylinder motion and harvested voltage is presented. The effects of the load resistance, piezoelectric materials, and circuit combined on the natural frequency and damping of the vibratory system are determined by performing a linear analysis. The dynamic response of the cylinder and harvested energy are investigated. The results show that the harvested level in SS and SP&PS modes is the same with different values of load resistance. For four different system parameters, the results show that the bigger size of cylinder with PZT beams can obtain the higher harvested power.

Effects of nonconstant coupling through nonlinear magnetics in electromagnetic vibration energy harvesters

2012 ◽  
Vol 23 (13) ◽  
pp. 1533-1541 ◽  
Author(s):  
Clemens Cepnik ◽  
Eric M Yeatman ◽  
Ulrike Wallrabe
Keyword(s):  
Magnetic Field ◽  
Energy Harvesting ◽  
Magnetic Fields ◽  
Vibration Amplitude ◽  
Homogeneous Magnetic Field ◽  
Vibration Energy ◽  
System Parameters ◽  
Energy Harvesters ◽  
Electromagnetic Vibration ◽  
The Impact

This article discusses how a nonhomogeneous magnetic field with a nonconstant flux gradient affects the behavior of electromagnetic vibration energy harvesters. Based on simulations, the authors show that this nonlinearity enables to increase the output power and bandwidth but not to effectively limit the oscillator vibration amplitude. The impact, however, depends on various system parameters, especially the mechanical damping. Comparing the results to an energy-harvesting prototype, one can conclude that, in practice, the linear model based on a homogeneous magnetic field provides a good estimate. The authors finally give suggestions about magnetic fields that are beneficial for energy harvesting.

scholarly journals Adaptive relaying protocol for wireless energy harvesting and information processing in NOMA systems: Outage probability analysis

2020 ◽  
Vol 9 (1) ◽  
pp. 94-100
Author(s):  
Phu Tran Tin ◽  
Duy-Hung Ha ◽  
Tran Thanh Trang
Keyword(s):  
Information Processing ◽  
Energy Harvesting ◽  
Outage Probability ◽  
Integral Form ◽  
Model System ◽  
Primary System ◽  
System Parameters ◽  
Fifth Generation ◽  
Wireless Energy Harvesting ◽  
Adaptive Relaying

In order to satisfy the increasing data rate demands, the research in the fifth-generation (5G) wireless networks is ongoing, both in academia and industry. In this research, we propose and investigate adaptive relaying protocol (ARP) For wireless energy harvesting (EH) and information processing in NOMA systems. Firstly, we investigate and derive the closed-form and integral-form expressions of the outage probability (OP) of the model system. Then, all the results are convinced by the Monte Carlo simulation. The research results show that all the analytical and simulation results are the same in connection with the primary system parameters. This research can provide a recommendation for NOMA system network.

scholarly journals Adaptive Energy Harvesting Relaying Protocol for Two-Way Half-Duplex System Network over Rician Fading Channels

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Tan N. Nguyen ◽  
Tran Hoang Quang Minh ◽  
Phuong T. Tran ◽  
Miroslav Voznak
Keyword(s):  
Energy Harvesting ◽  
Closed Form ◽  
Fading Channels ◽  
System Performance ◽  
Relay Network ◽  
Rician Fading ◽  
Destination Node ◽  
Amplify And Forward ◽  
Duplex System ◽  
System Parameters

We investigate the system performance of a two-way amplify-and-forward (AF) energy harvesting relay network over the Rician fading environment. For details, the delay-limited (DL) and delay-tolerant (DT) transmission modes are proposed and investigated when both energy and information are transferred between the source node and the destination node via a relay node. In the first stage, the analytical expressions of the achievable throughput, ergodic capacity, the outage probability, and symbol error ratio (SER) were proposed, analyzed, and demonstrated. After that, the closed-form expressions for the system performance are studied in connection with all system parameters. Moreover, the analytical results are also demonstrated by Monte Carlo simulation in comparison with the closed-form expressions. Finally, the research results show that the analytical and the simulation results agree well with each other in all system parameters.

scholarly journals Hybrid TSR–PSR Alternate Energy Harvesting Relay Network over Rician Fading Channels: Outage Probability and SER Analysis

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3839 ◽  
Author(s):  
Tan Nguyen ◽  
Phu Tran Tin ◽  
Duy Ha ◽  
Miroslav Voznak ◽  
Phuong Tran ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Outage Probability ◽  
Fading Channels ◽  
Relay Network ◽  
Rician Fading ◽  
Power Splitting ◽  
Amplify And Forward ◽  
System Parameters ◽  
Alternate Energy ◽  
Rician Fading Channels

In this research, we investigate a hybrid time-switching relay (TSR)–power-splitting relay (PSR) alternate energy harvesting (EH) relaying network over the Rician fading channels. For this purpose, the amplify-and-forward (AF) mode is considered for the alternative hybrid time TSR–PSR. The system model consists of one source, one destination and two alternative relays for signal transmission from the source to the destination. In the first step, the exact and asymptotic expressions of the outage probability and the symbol errors ratio (SER) are derived. Then, the influence of all system parameters on the system performance is investigated, and the Monte Carlo simulation verifies all results. Finally, the system performances of TSR–PSR, TSR, and PSR cases are compared in connection with all system parameters.

scholarly journals Half-duplex power beacon-assisted energy harvesting relaying networks: system performance analysis

2019 ◽  
Vol 9 (5) ◽  
pp. 3399
Author(s):  
Tan N. Nguyen ◽  
Minh Tran ◽  
Van-Duc Phan ◽  
Hoang-Nam Nguyen ◽  
Thanh-Long Nguyen
Keyword(s):  
Energy Harvesting ◽  
System Performance ◽  
System Throughput ◽  
Primary System ◽  
Amplify And Forward ◽  
Decode And Forward ◽  
System Parameters ◽  
Half Duplex ◽  
Simulation Results ◽  
Analytical Expressions

<p>In this work, the half-duplex (HF) power beacon-assisted (PB) energy harvesting (EH) relaying network, which consists of a source (S), Relay (R), destination (D) and a power beacon (PB) are introduced and investigated. Firstly, the analytical expressions of the system performance in term of outage probability (OP) and the system throughput (ST) are analyzed and derived in both amplify-and-forward (AF) and decode-and-forward (DF) modes. After that, we verify the correctness of the analytical analysis by using Monte-Carlo simulation in connection with the primary system parameters. From the numerical results, we can see that all the analytical and the simulation results are matched well with each other.</p>

scholarly journals Outage probability analysis of DF PSR energy harvesting full-duplex relaying network with presence of the direct link using MRC technique

2019 ◽  
Vol 16 (2) ◽  
pp. 606
Author(s):  
Van-Duc Phan ◽  
Phu Tran Tin ◽  
Minh Tran ◽  
Tran Thanh Trang
Keyword(s):  
Energy Harvesting ◽  
Outage Probability ◽  
System Performance ◽  
Integral Form ◽  
Full Duplex ◽  
Relay Network ◽  
Power Splitting ◽  
Direct Link ◽  
Decode And Forward ◽  
System Parameters

<p>In the last time, the system performance of the energy harvesting relay network has been considered in many studies. In this paper, we propose and investigate the outage probability (OP) of the Decode-and-Forward (DF) Energy Harvesting (EH) Full-Duplex (FD) Relaying network in Power Splitting Protocol (PS) using MRC Technique with the presence of the direct link. In the first stage, the integral form of the OP is derived in two cases with and without the presence of the direct link. After that, we analyze the influence of main system parameters on the OP and comparison between two cases with and without the presence of the direct link. Finally, the results show that all simulation and analytical results match well with each other based on the Monte Carlo verification simulation.</p>

Models of Cataclysmic Variables from Photometric and Spectroscopic Data

1979 ◽  
Vol 46 ◽  
pp. 65-74 ◽  
Author(s):  
A.C. Fabian ◽  
J.E. Pringle ◽  
J.A.J. Whelan ◽  
J.A. Bailey
Keyword(s):  
Spectroscopic Data ◽  
Cataclysmic Variables ◽  
System Parameters ◽  
Dwarf Nova ◽  
Spectroscopic Observations ◽  
Photometric And Spectroscopic Observations

Abstract.Recent photometric and spectroscopic observations of the dwarf nova system Z Cha are discussed. Methods for constraining the system parameters are applied and the disc emissivity is deduced as a function of radius. Indications are found that the disc shrinks in size with increasing time after outburst.

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