Energy Management in a Multi-Source Energy Harvesting IoT System

2020 ◽  
Vol 13 (2) ◽  
pp. 42-59
Author(s):  
Ritu Garg ◽  
Neha Garg
Keyword(s):  
Energy Harvesting ◽  
Energy Management ◽  
Simulation Analysis ◽  
Scheduling Algorithm ◽  
Time Frame ◽  
Neutral System ◽  
Harvesting Systems ◽  
Energy Harvesting System ◽  
Harvesting Techniques ◽  
Simulation Results

To guarantee the uninterrupted operation of an IoT node, IoT nodes are installed with energy harvesting techniques to prolong their lifetime and recharge their batteries. Mostly energy harvesting systems collect energy from sunlight and wind. However, the energy harvested from the sunlight is non-continuous and energy harvested from the wind is insufficient for continuously powering an IoT node. Thus, to resolve this problem, authors proposed an energy harvesting system namely SWEH which harvests energy from solar light and wind. In this article, authors proposed a scheduling algorithm to balance the energy produced by SWEH and the energy consumption of an IoT node that results in the energy neutral system. Results from simulation analysis clearly manifest that the proposed SWEH system extracts more energy as compared to energy produced by a single solar panel or wind turbine. With the help of simulation results, authors also show that the proposed algorithm leaves the system in energy neutral state at the end of particular time frame.

scholarly journals Analytical research on energy harvesting systems for fluidic soft actuators

2018 ◽  
Vol 15 (1) ◽  
pp. 172988141875587 ◽  
Author(s):  
Tao Wang ◽  
Wei Song ◽  
Shiqiang Zhu
Keyword(s):  
Energy Harvesting ◽  
Dynamic Models ◽  
Original System ◽  
Control Performance ◽  
Harvesting Systems ◽  
Energy Harvesting System ◽  
Analytical Research ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency ◽  
Soft Actuators

Energy consumption has significant influence on the working time of soft robots in mobile applications. Fluidic soft actuators usually release pressurized fluid to environment in retraction motion, resulting in dissipation of considerable energy, especially when the actuators are operated frequently. This article mainly explores the potential and approaches of harvesting the energy released from the actuators. First, the strain energy and pressurized energy stored in fluidic soft actuators are modeled based on elastic mechanics. Then, taking soft fiber-reinforced bending actuators as case study, the stored energy is calculated and its parametric characteristics are presented. Finally, two energy harvesting schematics as well as dynamic models are proposed and evaluated using numerical analysis. The results show that the control performance of the energy harvesting system becomes worse because of increased damping effect and its energy harvesting efficiency is only 14.2% due to the losses of energy conversion. The energy harvesting system in pneumatic form is a little more complex. However, its control performance is close to the original system and its energy harvesting efficiency reaches about 44.1%.

Modeling of Low Frequency Multi-Source Energy Harvesting Systems

2011 ◽  
Author(s):  
Christopher Green ◽  
Ugur Erturun ◽  
Matthew Burnette ◽  
Karla Mossi
Keyword(s):  
Energy Harvesting ◽  
Systems Approach ◽  
Impedance Matching ◽  
Low Frequency ◽  
Simulation Software ◽  
Lumped Parameter ◽  
Harvesting Systems ◽  
Present Design ◽  
Energy Harvesting System ◽  
Mixed Circuit

Accurate modeling of multi-source harvesters present design challenges such as the integration of mixed circuit topologies, passive versus active topologies, impedance matching, and optimization. Commercial modeling and simulation software packages offer solutions but often times are not comprehensive enough. In this work P-Spice, Simulink, and Comsol Multiphysics were used to model a multi-source energy harvesting system that incorporates the energy producing capabilities of the piezoelectric, the pyroelectric, and thermoelectric effect. A systems approach that models the material properties of the converters, the power electronics and storage was implemented. Low frequency experimental data from PZT based harvesters and thermoelectric generators were used to produce lumped parameter models. It was demonstrated that within 12% that combining effects may contribute to continuous energy harvesting operation.

scholarly journals Joint Energy Management for Distributed Energy Harvesting Systems

2021 ◽  
Author(s):  
Naomi Stricker ◽  
Yingzhao Lian ◽  
Yuning Jiang ◽  
Colin N. Jones ◽  
Lothar Thiele
Keyword(s):  
Energy Harvesting ◽  
Energy Management ◽  
Distributed Energy ◽  
Harvesting Systems

DESIGN OF INTEGRATED ENERGY HARVESTING SYSTEM ON WINDOW BUILDING USING SOLAR PV

2019 ◽  
Author(s):  
Rishal Asri ◽  
Koko Friansa
Keyword(s):  
Energy Harvesting ◽  
Solar Energy ◽  
Electrical Energy ◽  
City Government ◽  
Solar Pv ◽  
Energy Potential ◽  
Solar Energy Harvesting ◽  
Harvesting Systems ◽  
Energy Harvesting System ◽  
Physical Comfort

The current building is expected to provide physical comfort, such as room comfort, temperature, sound and lighting. Some equipment is needed that requires electrical energy to provide physical comfort. Like a room cooling device to provide thermal comfort, a room lamp to provide lighting comfort. The ITERA building built by the City Government of Bandar Lampung has high solar energy potential. While the electricity source still uses diesel fuel. The potential for solar energy radiation is used to become electrical energy by using glass windows as the foundation for installing solar energy harvesting systems using solar PV.

Single-Input Multi-Output Converter With Backup Battery for Energy Harvesting System of the Gas Sensor

2017 ◽  
Author(s):  
Ming-Hung Yu ◽  
Paul C.-P. Chao
Keyword(s):  
Energy Harvesting ◽  
Gas Sensor ◽  
Rechargeable Battery ◽  
Ambient Light ◽  
Input Condition ◽  
Energy Harvesting System ◽  
Single Input ◽  
Output Side ◽  
Harvesting Techniques ◽  
Light Input

This paper presents a single-input multi-output converter with backup battery for energy harvesting system of the gas sensor. Energy harvesting techniques used to catch energy from ambient light through photovoltaic (PV) modules as the main power source and regulate two outputs - 3.3V and 15V for different loads by a dc-dc converter. The backup battery is connected to input and output side of this system as a source and a load, when the PV energy more than the power of load, surplus energy charged in the rechargeable battery, when the ambient energy small than power of load, converter will storage power from PV cells, then charge power from battery and feed energy to the load. Finally, a multi-output converter for energy harvesting system is implemented to verify the precision of control strategy, light input and heavy input condition proposed in this paper.

Entwicklung und Optimierung eines piezoelektrischen Energy-Harvesting-Systems zur Energieversorgung eines Güterverfolgungssystems im Logistikbereich

2018 ◽  
Vol 85 (11) ◽  
pp. 645-657 ◽  
Author(s):  
Philipp Dorsch ◽  
Dominik Gedeon ◽  
Manuel Weiß ◽  
Stefan J. Rupitsch
Keyword(s):  
Energy Harvesting ◽  
Energy Harvester ◽  
Finite Elemente ◽  
Harvesting Systems ◽  
Energy Harvesting System

Zusammenfassung Es wird die Entwicklung und Optimierung eines piezoelektrischen Energy-Harvesting-Systems zur autarken Energieversorgung einer Güterverfolgungsanwendung im Logistikbereich vorgestellt. Das Energy-Harvesting-System ist zusammen mit einem Funksender an einem zu ortenden Objekt angebracht. Durch Erschütterungen bei Bewegung des Objekts wird solange elektrische Energie gewandelt und zwischengespeichert, bis genügend vorhanden ist, um eine ortbare Funknachricht mit der Identifikationsnummer des Objekts zu senden. Zur Entwicklung des Harvesters werden zunächst Designkriterien für die optimale Geometrie biegebalkenbasierter piezoelektrischer Energy-Harvester anhand analytischer Methoden ermittelt. Im Anschluss wird das Harvesting-System auf die mechanische Anregung und den elektrischen Energiebedarf hin absolut dimensioniert. Um auch das nichtlineare elektrische Netzwerk zur Energieextraktion und dessen Rückwirkung auf den Harvester korrekt zu berücksichtigen, kommt hierbei ein spezieller modal reduzierter Simulationsansatz in Verbindung mit realistischen Finite-Elemente-Simulationen zum Einsatz. Anschließend wird die Energieextraktionsschaltung hinsichtlich ihrer Energieextraktions-Effizienz und der Einsetzbarkeit für verschiedene Anregungsszenarien ausgelegt. Die Funktionalität des Energy-Harvesting-Systems, bestehend aus Energy-Harvester, Energieextraktionsnetzwerk und Funkschaltung, konnte abschließend für verschiedene Anregungsszenarien nachgewiesen werden.

Modeling of a Nonlinear Vibration-Based Energy Harvesting System as a Duffing Oscillator

2013 ◽  
Vol 198 ◽  
pp. 663-668
Author(s):  
Henrik Westermann ◽  
Marcus Neubauer ◽  
Jörg Wallaschek
Keyword(s):  
Energy Harvesting ◽  
Resonant Frequency ◽  
Nonlinear Oscillator ◽  
Duffing Oscillator ◽  
Excitation Frequency ◽  
Cantilever Structure ◽  
Energy Harvesting System ◽  
Harvesting Techniques ◽  
Host Structure ◽  
Tip Mass

The harvesting of ambient energy has become more important over the last years. This paper will investigate an analytical effort to predict the Duffing parameters for a magnetoelastic cantilever structure. The modeling is compared to a nonlinear harvester with point dipoles. The system consists of a harmonic excited cantilever structure with a magnetic tip mass. The beam is firmly clamped to the host structure. A second oppositely poled permanent magnet is located near the free end of the beam. The system is a bistable nonlinear oscillator with two equilibrium positions. Several studies show the better performance of the setup. The approach is not limited for energy harvesting techniques. The setup is suitable for broadband oscillations and also to tune the resonant frequency closer to the excitation frequency.

scholarly journals Modeling and Optimisation of a Solar Energy Harvesting System for Wireless Sensor Network Nodes

2018 ◽  
Vol 7 (3) ◽  
pp. 40 ◽  
Author(s):  
Himanshu Sharma ◽  
Ahteshamul Haque ◽  
Zainul Jaffery
Keyword(s):  
Wireless Sensor Network ◽  
Energy Harvesting ◽  
Solar Energy ◽  
Sensor Network ◽  
Wireless Sensor ◽  
Control Technique ◽  
Solar Energy Harvesting ◽  
Energy Harvesting System ◽  
Simulation Results ◽  
Battery Energy

The Wireless Sensor Networks (WSN) are the basic building blocks of today’s modern internet of Things (IoT) infrastructure in smart buildings, smart parking, and smart cities. The WSN nodes suffer from a major design constraint in that their battery energy is limited and can only work for a few days depending upon the duty cycle of operation. The main contribution of this research article is to propose an efficient solar energy harvesting solution to the limited battery energy problem of WSN nodes by utilizing ambient solar photovoltaic energy. Ideally, the Optimized Solar Energy Harvesting Wireless Sensor Network (SEH-WSN) nodes should operate for an infinite network lifetime (in years). In this paper, we propose a novel and efficient solar energy harvesting system with pulse width modulation (PWM) and maximum power point tracking (MPPT) for WSN nodes. The research focus is to increase the overall harvesting system efficiency, which further depends upon solar panel efficiency, PWM efficiency, and MPPT efficiency. Several models for solar energy harvester system have been designed and iterative simulations were performed in MATLAB/SIMULINK for solar powered DC-DC converters with PWM and MPPT to achieve optimum results. From the simulation results, it is shown that our designed solar energy harvesting system has 87% efficiency using PWM control and 96% efficiency ( η s y s ) by using the MPPT control technique. Finally, an experiment for PWM controlled SEH-WSN is performed using Scientech 2311 WSN trainer kit and a Generic LM2575 DC-DC buck converter based solar energy harvesting module for validation of simulation results.

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