This paper proposes a low-cost electric field energy harvester that can be integrated into the enclosure of smart grid sensors monitoring medium-voltage to high-voltage utility assets. The harvester is designed to harness the abundant electric fields near these assets to power the sensors. A prototype was built and tested on a 35-kV bus, providing 17 mW of continuous power, enough to operate a low-duty-cycle wireless voltage sensor attached to the asset. The harvester has a shape that allows installation without interrupting the asset and can be used with multiple assets.
Of late, electric vehicles (EVs) have attracted much attention owing to their use of clean energy. Large progress in lithium-ion battery has propelled the development of EVs.However, the challenge is that growing number of EVs leads to huge demand in electric power, which will aggravate the power grid load. This leads to an exploration for alternative and clean sources of energy to charge EVs. This project implements solar energy system to erect a charging station for EV application. The charging station employs multi-port charging by providing a constant voltage DC bus. The charging controllers are operated based on the concept of power balance, and constant current/constant voltage charging. Performance of the charging system is validated with simulation and experimental results.
Of late, electric vehicles (EVs) have attracted much attention owing to their use of clean energy. Large progress in lithium-ion battery has propelled the development of EVs.However, the challenge is that growing number of EVs leads to huge demand in electric power, which will aggravate the power grid load. This leads to an exploration for alternative and clean sources of energy to charge EVs. This project implements solar energy system to erect a charging station for EV application. The charging station employs multi-port charging by providing a constant voltage DC bus. The charging controllers are operated based on the concept of power balance, and constant current/constant voltage charging. Performance of the charging system is validated with simulation and experimental results.
Asoka Technologies offer latest IEEE Electrical projects for BTech and MTech. We have many projects and we do provide abstract, paper explanation, simulink model explanation and exact results within time.
We do develop your own ideas also.
In this paper, a distributed incremental adaptive filter (DIAF) controlled utility interfaced photovoltaic (PV) - battery microgrid system is presented with power quality features. From protection aspects, grid tied solar inverters are required to shut down at loss of the utility. However, the multi-purpose PV-battery system is developed to provide energy to the critical loads, even at loss of distribution network. The bidirectional controlled converter with a battery also mitigates the intermittency of a PV array under rapid variations in the weather. The extracted maximum power is supplied to the voltage source converter (VSC), which is transferred to the nonlinear loads and the utility. The distributed incremental adaptive filter is used to control the VSC with contribution of PV power and the battery. In addition, the DIAF control provides harmonics mitigation, load balancing and power factor improvement functionalities in order to deal with system connected with nonlinear loads. A PV power feed-forward (PVFF) term is incorporated in the current control for injection of active power to the utility as well as to improve the dynamic operation of residential PV-battery microgrid. The battery energy storage (BES) reduces the fuel bills and it is also utilized to provide smoothing attributes to the microgrid. The effectiveness of PV-battery microgrid is validated experimentally developed in the laboratory.
ECE ROLE OF SOLAR FARM IN POWER FACTOR IMPROVEMENT OF GRID CONNECTED SYSTEMkarann
Role of solar farm in power factor improvement of grid connected system.
introduction
how do solar panels work what is power factor with example
and conclusion.
Finite element model of vagus nerve stimulation. Finite element analysis of the effect of electric fields on biological tissue (the vagus nerve). Medical device consulting project. Paper: Arle, Carlson, Mei, Investigation of Mechanisms of Vagus Nerve Stimulation for Seizure Using Finite Element Modeling (in review).
Benefits in moving the intra-array voltage from 33 kV to 66 kV AC for large o...Torben Haagh
What are the benefits in moving from 33 kV to 66 kV? Carbon Trust's and Atkins's view
Carbon Trust in collaboration with Atkins plc worked on a paper that highlights the potential for higher voltage inter-array systems to deliver significant cost benefits and higher yields to the design of future offshore wind farms.
Carbon Trust in collaboration with Atkins plc worked on a paper that highlights the potential for higher voltage inter-array systems to deliver significant cost benefits and higher yields to the design of future offshore wind farms.
Carbon Trust in collaboration with Atkins plc worked on a paper that highlights the potential for higher voltage inter-array systems to deliver significant cost benefits and higher yields to the design of future offshore wind farms. Read the paper here:
http://bit.ly/AtkinsWhitepaper
Solarsyz offer gird tie power inverter and hundreds of solar products in Houston, Texas. We have gird tie power inverters, off grid inverters and other solar products at a reasonable rate.
A WSN primary outline issue for a sensor system is protection of the vitality accessible at every sensor node. We propose to convey different, versatile base stations to delay the lifetime of the sensor system. We split the lifetime of the sensor system into equivalent stretches of time known as rounds. Base stations are migrated toward the begin of a round. Our strategy utilizes a whole number straight program to focus new areas for the base stations and in view of steering convention to guarantee vitality proficient directing amid every round. We propose four assessment measurements and look at our answer utilizing these measurements. Taking into account the reproduction results we demonstrate that utilizing various, versatile base stations as per the arrangement given by our plans would altogether expand the lifetime of the sensor system.
Asoka Technologies offer latest IEEE Electrical projects for BTech and MTech. We have many projects and we do provide abstract, paper explanation, simulink model explanation and exact results within time.
We do develop your own ideas also.
In this paper, a distributed incremental adaptive filter (DIAF) controlled utility interfaced photovoltaic (PV) - battery microgrid system is presented with power quality features. From protection aspects, grid tied solar inverters are required to shut down at loss of the utility. However, the multi-purpose PV-battery system is developed to provide energy to the critical loads, even at loss of distribution network. The bidirectional controlled converter with a battery also mitigates the intermittency of a PV array under rapid variations in the weather. The extracted maximum power is supplied to the voltage source converter (VSC), which is transferred to the nonlinear loads and the utility. The distributed incremental adaptive filter is used to control the VSC with contribution of PV power and the battery. In addition, the DIAF control provides harmonics mitigation, load balancing and power factor improvement functionalities in order to deal with system connected with nonlinear loads. A PV power feed-forward (PVFF) term is incorporated in the current control for injection of active power to the utility as well as to improve the dynamic operation of residential PV-battery microgrid. The battery energy storage (BES) reduces the fuel bills and it is also utilized to provide smoothing attributes to the microgrid. The effectiveness of PV-battery microgrid is validated experimentally developed in the laboratory.
ECE ROLE OF SOLAR FARM IN POWER FACTOR IMPROVEMENT OF GRID CONNECTED SYSTEMkarann
Role of solar farm in power factor improvement of grid connected system.
introduction
how do solar panels work what is power factor with example
and conclusion.
Finite element model of vagus nerve stimulation. Finite element analysis of the effect of electric fields on biological tissue (the vagus nerve). Medical device consulting project. Paper: Arle, Carlson, Mei, Investigation of Mechanisms of Vagus Nerve Stimulation for Seizure Using Finite Element Modeling (in review).
Benefits in moving the intra-array voltage from 33 kV to 66 kV AC for large o...Torben Haagh
What are the benefits in moving from 33 kV to 66 kV? Carbon Trust's and Atkins's view
Carbon Trust in collaboration with Atkins plc worked on a paper that highlights the potential for higher voltage inter-array systems to deliver significant cost benefits and higher yields to the design of future offshore wind farms.
Carbon Trust in collaboration with Atkins plc worked on a paper that highlights the potential for higher voltage inter-array systems to deliver significant cost benefits and higher yields to the design of future offshore wind farms.
Carbon Trust in collaboration with Atkins plc worked on a paper that highlights the potential for higher voltage inter-array systems to deliver significant cost benefits and higher yields to the design of future offshore wind farms. Read the paper here:
http://bit.ly/AtkinsWhitepaper
Solarsyz offer gird tie power inverter and hundreds of solar products in Houston, Texas. We have gird tie power inverters, off grid inverters and other solar products at a reasonable rate.
A WSN primary outline issue for a sensor system is protection of the vitality accessible at every sensor node. We propose to convey different, versatile base stations to delay the lifetime of the sensor system. We split the lifetime of the sensor system into equivalent stretches of time known as rounds. Base stations are migrated toward the begin of a round. Our strategy utilizes a whole number straight program to focus new areas for the base stations and in view of steering convention to guarantee vitality proficient directing amid every round. We propose four assessment measurements and look at our answer utilizing these measurements. Taking into account the reproduction results we demonstrate that utilizing various, versatile base stations as per the arrangement given by our plans would altogether expand the lifetime of the sensor system.
Piezo electric MEMS energy harvester-CreativeaskAshik Ask
Let me describe fabrication and characterization of a significantly improved version of a MEMS-based PZT/PZT thick film bimorph vibration energy harvester with an integrated silicon proof mass. The main advantage of bimorph vibration energy harvesters is that strain energy is not lost in mechanical support materials since only PZT is strained, and thus it has a potential for significantly higher output power. An improved process scheme for the energy harvester resulted in a robust fabrication process with a record high fabrication yield of 98.6%. Moreover, the robust fabrication process allowed a high pressure treatment of the screen printed PZT thick films prior to sintering, improving the PZT thick film performance and harvester power output reaches 37.1 μW at 1 g.r description goes here
The slides for a presentation on Energy harvesting and the state off the art designs currently taking advantage of the energy around us.
Energy harvesting (also known as power harvesting or energy scavenging) is the process by which energy is derived from external sources (e.g.solar power, thermal energy, wind energy, salinity gradients, and kinetic energy), captured, and stored for small, wireless autonomous devices, like those used in wearable electronics and wireless sensor networks.
Credits: A thanks go out to Johan Pedersen for introducing me to the subject a great workshop and use of some of his slides.
This design involves the implementation AES 128. Inside top module, enc, dec and key_generation modules are available. Both enc and dec are controlled via respective resets. When enc executes, key_generation runs and further fills the key memory. dec unit on its execution extracts key from the same memory. Working on to test the design with Side Channel Attacks.
A Three Phase Multi Level Converter for grid Connected PV SystemIAES-IJPEDS
Photovoltaic energy is a wide kind of green energy. A high performance on these systems is needed to make the most of energy produced by solar cells. Also, there must be a constant adaptation due to the continuous variation of power production. Control techniques for Power Converters like the MPPT algorithm (Maximum Power Point Tracking) present very good results on photovoltaic chains. Nevertheless, losses on power elements reduce global performance and the voltage/current adaptation is not always possible. This paper presents a single-phase 11-level (5 H-bridges) cascade multilevel DC- AC grid-tied inverter. Each inverter bridge is connected to a 200 W solar panel. OPAL-RT lab was used as the hardware in the loop (HIL) real-time control system platform where a Maximum Power Point Tracking (MPPT) algorithm was implemented based on the inverter output power to assure optimal operation of the inverter when connected to the power grid as well as a Phase Locked Loop (PLL) for phase and frequency match. A novel SPWM scheme is proposed in this paper to be used with the solar panels that can account for voltage profile fluctuations among the panels during the day. Simulation and experimental results are shown for voltage and current during synchronization mode and power transferring mode to validate the methodology for grid connection of renewable resources.
With the purpose of rein in the high voltage of flexible power systems, renovation and
amendment of multi-level structures aimed at acquisition of high quality voltage is certainly required. In this
regard, robust topology must be occupied that encompass the maximum output voltage levels along with
minimum of switch number, of course, with taking into account of Peak Inverse Voltage (PIV). In this
paper, a neoteric high-performance multilevel cascaded inverter is suggested up to the problem of
repetitive output levels to be unraveled and also number of output voltage levels to be maximized. It has
been constructed by series-connected multilevel inverters blocks and three-level inverter. The simulation
results along with experimental results extracted by manufactured prototype have transparently approved
high efficiency of proposed inverter as well as its feasibility. Apart from above, new mathematical approach
has been presented to calculate and define the DC voltage sources magnitudes in asymmetric converter.
Generation of Higher Number of Voltage Levels by Stacking Inverters of Lower ...Asoka Technologies
This paper proposes a new method of generating higher number of levels in the voltage waveform by stacking multilevel converters with lower voltage space vector structures. An important feature of this stacked structure is the use of low voltage devices while attaining higher number of levels. This will find extensive applications in electric vehicles since direct battery drive is possible. The voltages of all the capacitors in the structure can be controlled within a switching cycle using the switching state redundancies (pole voltage redundancies). This helps in reducing the capacitor size. Also, the capacitor voltages can be balanced irrespective of modulation index and load power factor. To verify the concept experimentally, a 9-level inverter is developed by stacking two 5-level inverters and an induction motor is run using V/f control scheme. Both steady state and transient results are presented.
Wireless sensor nodes are usually deployed in not easily accessible places to provide solution to a wide
range of application such as environmental, medical and structural monitoring. They are spatially
distributed and as a result are usually powered from batteries. Due to the limitation in providing power
with batteries, which must be manually replaced when they are depleted, and location constraints in
wireless sensor network causes a major setback on performance and lifetime of WSNs. This difficulty in
battery replacement and cost led to a growing interest in energy harvesting. The current practice in energy
harvesting for sensor networks is based on practical and simulation approach. The evaluation and
validation of the WSN systems is mostly done using simulation and practical implementation. Simulation is
widely used especially for its great advantage in evaluating network systems. Its disadvantages such as the
long time taken to simulate and not being economical as it implements data without proper analysis of all
that is involved ,wasting useful resources cannot be ignored. In most times, the energy scavenged is directly
wired to the sensor nodes. We, therefore, argue that simulation – based and practical implementation of
WSN energy harvesting system should be further strengthened through mathematical analysis and design
procedures. In this work, we designed and modeled the energy harvesting system for wireless sensor nodes
based on the input and output parameters of the energy sources and sensor nodes. We also introduced the
use of supercapacitor as buffer and intermittent source for the sensor node. The model was further tested in
a Matlab environment, and found to yield a very good approach for system design.
Remote Control of Nanogrids: a Cost-effective Solution in a Laboratory SetupAlessandro Burgio
G. Barone, A. Burgio, D. Menniti, M. Motta, A. Pinnarelli and N. Sorrentino, Department of Mechanical, Energy and Management Engineering, University of Calabria, Rende, Italy
Optimized Power Flows in Microgrid with and without Distributed Energy Storag...Power System Operation
This study presents a combined algebraic and power flow model of a microgrid. The aim of this study is to introduce a strong tool which is capable to compare physical parameters of a microgrid which are hardly possible to calculate only by common algebraic optimization methods. Especially interesting is comparison between microgrids without energy storage, with a single bigger battery plant and with distributed batteries. This study focuses mainly on high voltage (HV) part of a transformer, inductive power and power losses in microgrids. Modelled microgrid consists of five robust nodes (which can represent living quarters with renewable energy production and energy storage) connected into a single transformer node, which later leads to the transmission system.
Concept and model of a metamaterial based passive wireless temperature sensor...
A low cost electric field energy harvester for an mvhv asset-monitoring smart sensor
1. A Low-Cost Electric Field Energy Harvester for an MV/HV Asset-
Monitoring Smart Sensor
Abstract:
This paper investigates the powering of smart grid sensors with electric
fields (E-fields) present in abundance near most medium-voltage to high-
voltage (MV/HV)utility assets. A unique E-field energy harvester is
proposed, which is integrated into a sensor's enclosure, thereby ensuring
low-cost and compact size. The proposed energy harvester can be used
with multiple assets by virtue of its shape, which also allows installation
without interruption of the MV/HV asset. Design methodology of the
harvester through Maxwell simulations along with a new and efficient
circuit design for obtaining a regulated dc supply is presented. A medium-
voltage prototype of the proposed E-field energy harvester integrated with
a wireless voltage sensor is built and tested on a 35-kV bus. The prototype
provides 17 mW of continuous power at 35 kV with a high energy density.
This power is enough to operate a low-duty-cycle sensor node stuck on to
2. an MV/HV asset. The prototype shows promising results and demonstrates
the efficacy of using E-fields for powering smart grid sensors for MV/HV
assets.