This presentation on Power Quality Improvement Techniques: A Review presented by Sahid Raja Khan student of B. Tech. Electrical Engineering of Compucom Institute of Technology and Management Jaipur. It describes the improvement technique of Power Quality at GSS and other Substations including Generating Stations.
This presentation on Power Quality Improvement Techniques: A Review presented by Sahid Raja Khan student of B. Tech. Electrical Engineering of Compucom Institute of Technology and Management Jaipur. It describes the improvement technique of Power Quality at GSS and other Substations including Generating Stations.
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: IEEE 1547 and Microgrids, presented by Tom Key, EPRI, Baltimore, MD, August 29-31, 2016.
A Consideration of Medium Voltage Substation Primary ApplicationsSchneider Electric
Copyright AIST Reprinted with Permission. Presented at the 2013 Iron and Steel Technology Conference and Exposition (AISTech 2013). Unit substations have long served as the method for reducing voltage from higher distribution levels to lower, locally usable voltages. One of the main considerations affecting the design of the substation and the electrical protection and distribution system as a whole is the primary switching device of a substation. By comparing the abilities and options inherited with both types of primary switching devices, an informed decision can be made for specific system designs.
This Paper is aimed at analyzing the few important Power System equipment failures generally
occurring in the Industrial Power Distribution system. Many such general problems if not resolved it may
lead to huge production stoppage and unforeseen equipment damages. We can improve the reliability of
Power system by simply applying the problem solving tool for every case study and finding out the root cause
of the problem, validation of root cause and elimination by corrective measures. This problem solving
approach to be practiced by every day to improve the power system reliability. This paper will throw the light
and will be a guide for the Practicing Electrical Engineers to find out the solution for every problem which
they come across in their day to day maintenance activity.
USING ELECTROSTATIC FILTER TECHNOLOGY BASED ON SMART CONTROLMohammedQasim60
he most power plants used in Iraq are gas power stations, and one
of the most important factors that affect the efficiency of the gas turbine is the
inlet air quality due to the dusty weather in most of the year especially in the
summer season it’s a problem in terms of limiting electricity production.
Power System Operation with Reduced System Strength for Inverter-connected Ge...Power System Operation
Large numbers of inverter-based generators in remote
parts of the network present unique challenges to system
operators in keeping sufficient system strength to
maintain system security. In the National Energy Market
(NEM) of Australia, there is an exponential growth in the
uptake of inverter-based generators (IBG), particularly
solar and wind generation. These generators are often
electrically close to each other and can adversely interact
under certain system conditions. The system strength
available in remote parts of the network is often low and
a planned outage of a network element can further reduce
the system strength available to these IBGs. This could
lead to unexpected and undesirable system responses.
This paper presents the impact of prior network outages
on the response of multiple electrically close IBGs in a remote part of the network, and discusses operational
measures taken to manage system security during these
prior outages while permitting maximum stable output
of these generators. Each IBG has been examined
individually and collectively to identify its contribution
to the undesired system behaviour. A number of system conditions have been simulated based on a detailed and
validated electromagnetic transient (EMT) model of the
entire region under consideration, to identify the impact of
prior outage of a network element on the overall dynamic
behaviour of the system and the impact on system security. Results discussed in this paper apply for prior outage
conditions only. While undesired voltage oscillations
have been observed more recently in a limited number
of cases under system normal conditions, these are not
discussed in this paper.
We are occupied in providing Reyrolle 7SR11 The offered product is extremely admired by our patrons for its top performance and longer working life.;
Features:
High performance
Long functional life
Easy to use
Longer life service
Compact structure
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
FUNDAMENTALS OF POWER SYSTEM PROTECTION
FUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTION
Why we need power-system protection? System ProtectionSystem Protection
In addition to this, it is used for the protection of power system and prevent the flow of fault current. It can help in preventing the continuation of flow by quickly disconnecting the short circuit. ... The protection relay should operate on the commissioned condition in the electrical power system.
An Analytical Approach to Improve Stability and to Enhance Active & Reactive ...Soumya Ghatak
The initiation of fault in the Power System introduces a high degree of transient behaviour leading to the flow of a high value of current causing damage to the entire system. Several techniques has been developed for limiting the high fault current within a very short span of time but it's a continuous & ongoing research for the enthusiastic power system researchers to obtain optimum performance of the grid network by connecting certain dynamic components in the network. The modeling of the proposed grid network has been done using MATLAB/Simulink simulation software and its analysis has been evaluated under fault condition. This paper presents an analytical approach to improve stability and to enhance active & reactive power profile of grid network mainly under fault condition. The system incorporates connection of FACTS device to the network. The use of FACTS device improves the network parameters and ensures the reliability of power flow after a huge transient in the power system. A process flow model is also presented to explain the operational performance of the proposed network.
See publication An analytical approach to improve stability and to enhance active & reactive power profile of a grid network mainly under fault condition See publication.
Six startups born out of Lawrence Livermore National Laboratory technologies made presentations at a recent entrepreneurial event to attract investors.
The companies -- which have licensed technologies in biotech, renewable energy, sensors, infrared imaging and health care -- showcased their capabilities at the Entrepreneurs-in-Readiness (EIR) event at the Livermore Valley Open Campus' High Performance Computing Innovation Center.
The event was part of an EIR program developed by the Lab's Industrial Partnerships Office (IPO) to connect nascent companies with entrepreneurs and investors. The idea is to engage a diverse group of entrepreneurs and industry experts from Silicon Valley to help nurture promising new early stage Lab technology companies toward commercialization.
ipo.llnl.gov
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: IEEE 1547 and Microgrids, presented by Tom Key, EPRI, Baltimore, MD, August 29-31, 2016.
A Consideration of Medium Voltage Substation Primary ApplicationsSchneider Electric
Copyright AIST Reprinted with Permission. Presented at the 2013 Iron and Steel Technology Conference and Exposition (AISTech 2013). Unit substations have long served as the method for reducing voltage from higher distribution levels to lower, locally usable voltages. One of the main considerations affecting the design of the substation and the electrical protection and distribution system as a whole is the primary switching device of a substation. By comparing the abilities and options inherited with both types of primary switching devices, an informed decision can be made for specific system designs.
This Paper is aimed at analyzing the few important Power System equipment failures generally
occurring in the Industrial Power Distribution system. Many such general problems if not resolved it may
lead to huge production stoppage and unforeseen equipment damages. We can improve the reliability of
Power system by simply applying the problem solving tool for every case study and finding out the root cause
of the problem, validation of root cause and elimination by corrective measures. This problem solving
approach to be practiced by every day to improve the power system reliability. This paper will throw the light
and will be a guide for the Practicing Electrical Engineers to find out the solution for every problem which
they come across in their day to day maintenance activity.
USING ELECTROSTATIC FILTER TECHNOLOGY BASED ON SMART CONTROLMohammedQasim60
he most power plants used in Iraq are gas power stations, and one
of the most important factors that affect the efficiency of the gas turbine is the
inlet air quality due to the dusty weather in most of the year especially in the
summer season it’s a problem in terms of limiting electricity production.
Power System Operation with Reduced System Strength for Inverter-connected Ge...Power System Operation
Large numbers of inverter-based generators in remote
parts of the network present unique challenges to system
operators in keeping sufficient system strength to
maintain system security. In the National Energy Market
(NEM) of Australia, there is an exponential growth in the
uptake of inverter-based generators (IBG), particularly
solar and wind generation. These generators are often
electrically close to each other and can adversely interact
under certain system conditions. The system strength
available in remote parts of the network is often low and
a planned outage of a network element can further reduce
the system strength available to these IBGs. This could
lead to unexpected and undesirable system responses.
This paper presents the impact of prior network outages
on the response of multiple electrically close IBGs in a remote part of the network, and discusses operational
measures taken to manage system security during these
prior outages while permitting maximum stable output
of these generators. Each IBG has been examined
individually and collectively to identify its contribution
to the undesired system behaviour. A number of system conditions have been simulated based on a detailed and
validated electromagnetic transient (EMT) model of the
entire region under consideration, to identify the impact of
prior outage of a network element on the overall dynamic
behaviour of the system and the impact on system security. Results discussed in this paper apply for prior outage
conditions only. While undesired voltage oscillations
have been observed more recently in a limited number
of cases under system normal conditions, these are not
discussed in this paper.
We are occupied in providing Reyrolle 7SR11 The offered product is extremely admired by our patrons for its top performance and longer working life.;
Features:
High performance
Long functional life
Easy to use
Longer life service
Compact structure
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
FUNDAMENTALS OF POWER SYSTEM PROTECTION
FUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTIONFUNDAMENTALS OF POWER SYSTEM PROTECTION
Why we need power-system protection? System ProtectionSystem Protection
In addition to this, it is used for the protection of power system and prevent the flow of fault current. It can help in preventing the continuation of flow by quickly disconnecting the short circuit. ... The protection relay should operate on the commissioned condition in the electrical power system.
An Analytical Approach to Improve Stability and to Enhance Active & Reactive ...Soumya Ghatak
The initiation of fault in the Power System introduces a high degree of transient behaviour leading to the flow of a high value of current causing damage to the entire system. Several techniques has been developed for limiting the high fault current within a very short span of time but it's a continuous & ongoing research for the enthusiastic power system researchers to obtain optimum performance of the grid network by connecting certain dynamic components in the network. The modeling of the proposed grid network has been done using MATLAB/Simulink simulation software and its analysis has been evaluated under fault condition. This paper presents an analytical approach to improve stability and to enhance active & reactive power profile of grid network mainly under fault condition. The system incorporates connection of FACTS device to the network. The use of FACTS device improves the network parameters and ensures the reliability of power flow after a huge transient in the power system. A process flow model is also presented to explain the operational performance of the proposed network.
See publication An analytical approach to improve stability and to enhance active & reactive power profile of a grid network mainly under fault condition See publication.
Six startups born out of Lawrence Livermore National Laboratory technologies made presentations at a recent entrepreneurial event to attract investors.
The companies -- which have licensed technologies in biotech, renewable energy, sensors, infrared imaging and health care -- showcased their capabilities at the Entrepreneurs-in-Readiness (EIR) event at the Livermore Valley Open Campus' High Performance Computing Innovation Center.
The event was part of an EIR program developed by the Lab's Industrial Partnerships Office (IPO) to connect nascent companies with entrepreneurs and investors. The idea is to engage a diverse group of entrepreneurs and industry experts from Silicon Valley to help nurture promising new early stage Lab technology companies toward commercialization.
ipo.llnl.gov
You will hear about an R&D 100 award winning technology that enables biosecurity instrumentation testing and airborne contaminants tracking. The technology is inherently safe and provides flexibility in aerosol testing.
You will hear about an exciting new micromirror array designed and being prototyped at LLNL. It promises faster, more accurate motion and larger range than what is currently on the market. The new design will enable advanced applications in areas such as 3D image projection and high-speed focusable LIDAR, among others.
Six startups born out of Lawrence Livermore National Laboratory technologies made presentations at a recent entrepreneurial event to attract investors.
The companies -- which have licensed technologies in biotech, renewable energy, sensors, infrared imaging and health care -- showcased their capabilities at the Entrepreneurs-in-Readiness (EIR) event at the Livermore Valley Open Campus' High Performance Computing Innovation Center.
The event was part of an EIR program developed by the Lab's Industrial Partnerships Office (IPO) to connect nascent companies with entrepreneurs and investors. The idea is to engage a diverse group of entrepreneurs and industry experts from Silicon Valley to help nurture promising new early stage Lab technology companies toward commercialization.
ipo.llnl.gov
You will hear about an LLNL developed high-efficiency filter made from ceramic materials in a metal housing. The filters are scalable and can be engineered for myriad commercial applications.
Six startups born out of Lawrence Livermore National Laboratory technologies made presentations at a recent entrepreneurial event to attract investors.
The companies -- which have licensed technologies in biotech, renewable energy, sensors, infrared imaging and health care -- showcased their capabilities at the Entrepreneurs-in-Readiness (EIR) event at the Livermore Valley Open Campus' High Performance Computing Innovation Center.
The event was part of an EIR program developed by the Lab's Industrial Partnerships Office (IPO) to connect nascent companies with entrepreneurs and investors. The idea is to engage a diverse group of entrepreneurs and industry experts from Silicon Valley to help nurture promising new early stage Lab technology companies toward commercialization.
ipo.llnl.gov
March 2013
In March we featured a technology from a fellow national laboratory. You will hear about a new portable point of care diagnostics platform to run multiple assays in minutes from a single drop of blood or other bodily fluids.
Protecting our nation's ports from terrorist attacks consumes significant resources. To help address this problem, researchers at the Lawrence Livermore National Laboratory have been developing technologies to make offshore inspection of seaborn trade using floating ports a realistic option. The March 25 webinar will take a look how container commerce can be reinvented through public/private partnerships around Lawrence Livermore technologies and capabilities.
LEARN MORE
Technology Transfer at LLNL: http://1.usa.gov/1fdJd0p
Commerce security from offshore port design: http://bit.ly/1dzwYiv
Plan floated to ship cargo inspection offshore: http://1.usa.gov/1f7flHI
You will hear about an optical fiber draw tower in operation at LLNL that is researching new designs and applications for optical fibers. Optical fibers were originally developed for the telecom industry but new designs and fabrication techniques that can be researched using the LLNL draw tower are enabling uses in areas such as surgery, industrial machining, high power lasers and optical sensors
September 2012
You will hear about a prototype desalination technique that betters conventional capacitive deionization methods as well as reverse osmosis.
May 2012
You will hear about a research program in persistent surveillance. To identify terrorist activity and behavior, Livermore researchers have developed a data-processing pipeline that combines graphics-based computer hardware and clever software to extract meaning from wide-area overhead surveillance video.
Single core configurations of saturated core fault current limiter performanc...IJECEIAES
Economic growth with industrialization and urbanization lead to an extensive increase in power demand. It forced the utilities to add power generating facilities to cause the necessary demand-generation balance. The bulk power generating stations, mostly interconnected, with the penetration of distributed generation result in an enormous rise in the fault level of power networks. It necessitates for electrical utilities to control the fault current so that the existing switchgear can continue its services without upgradation or replacement for reliable supply. The deployment of fault current limiter (FCL) at the distribution and transmission networks has been under investigation as a potential solution to the problem. A saturated core fault current limiter (SCFCL) technology is a smart, scalable, efficient, reliable, and commercially viable option to manage fault levels in existing and future MV/HV supply systems. This paper presents the comparative performance analysis of two single-core SCFCL topologies impressed with different core saturations. It has demonstrated that the single AC winding configuration needs more bias power for affecting the same current limiting performance with an acceptable steady-state voltage drop contribution. The fault state impedance has a transient nature, and the optimum bias selection is a critical design parameter in realizing the SCFCL applications.
DETECTING POWER GRID SYNCHRONISATION FAILURE ON SENSING BAD VOLTAGE OR FREQUE...Pradeep Avanigadda
The project is designed to develop a system to detect the synchronization failure of any external supply source to the power grid on sensing the abnormalities in frequency and voltage.
There are several power generation units connected to the grid such as hydel, thermal, solar etc to supply power to the load. These generating units need to supply power according to the rules of the grid. These rules involve maintaining a voltage variation within limits and also the frequency. If any deviation from the acceptable limit of the grid it is mandatory that the same feeder should automatically get disconnected from the grid which by effect is termed as islanding. This prevents in large scale brown out or black out of the grid power. So it is preferable to have a system which can warn the grid in advance so that alternate arrangements are kept on standby to avoid complete grid failure.
ANALYSIS OF SOLID STATE TRANSFORMER WITH PERMANENT MAGNET SYNCHRONOUS GENERATOREditor IJMTER
In recent years the complexity of the grid systems has grown due to the increased
penetration of renewable energy and distributed generation sources. The increased complexity
requires new methods to quickly manage the changing sources and loads. This research focuses
on one of such technologies, called the SST. A SST uses power electronic devices to achieve
voltage conversion from one level to another. Several SST topologies have been proposed by
different research groups, without a clear idea on which is most suited for grid applications.To
ensure a proper choice of topology,a separate literature review is presented in this paper. The final
choice of topology is extremely modular. In this, conventional dc-dc converter of solid state transformer is replaced by SEPIC converter and the analysis is done using PMSG.
The electrical distribution network is undergoing tremendous modifications with the introduction of distributed generation technologies which have led to an increase in fault current levels in the distribution network. Fault current limiters have been developed as a promising technology to limit fault current levels in power systems. Though, quite a number of fault current limiters have been developed; the most common are the superconducting fault current limiters, solid-state fault current limiters, and saturated core fault current limiters. These fault current limiters present potential fault current limiting solutions in power systems. Nevertheless, they encounter various challenges hindering their deployment and commercialization. This research aimed at designing a bridge-type nonsuperconducting fault current limiter with a novel topology for distribution network applications. The proposed bridge-type nonsuperconducting fault current limiter was designed and simulated using PSCAD/EMTDC. Simulation results showed the effectiveness of the proposed design in fault current limiting, voltage sag compensation during fault conditions, and its ability not to affect the load voltage and current during normal conditions as well as in suppressing the source powers during fault conditions. Simulation results also showed very minimal power loss by the fault current limiter during normal conditions.
According to Institute of Electrical and Electronic Engineers (IEEE) standard IEEE 1100, power quality is defined as “the concept of powering and grounding sensitive electronic equipment in a manner suitable for the equipment”.
WHY POWER QUALITY MATTERS
Power quality and supply reliability are extremely important. Our world is increasingly dependent on electronic equipment and controls, and high sensitivity devices and processes are heavily dependent on a clearly defined power quality. Some facilities operate 7 days a week, 24 hours a day, so incur a high cost of downtime.
Similar to Optical Transconductance Varistor (Opticondistor): Potential replacement for high power switch modules by Stephen Sampayan of LLNL (20)
"Amoeba Cysts as Natural Containers for the Transport and Storage of Pathogens" by Sahar El-Etr, LLNL Biomedical Scientist
You will hear about a unique method for transporting clinical samples from the field to a laboratory. The use of amoeba as “natural” containers for pathogens was utilized to develop the first living system for the transport and storage of pathogens. The amoeba system works at ambient temperature for extended periods of time—capabilities currently not available for biological sample transport.
ipo.llnl.gov
Six startups born out of Lawrence Livermore National Laboratory technologies made presentations at a recent entrepreneurial event to attract investors.
The companies -- which have licensed technologies in biotech, renewable energy, sensors, infrared imaging and health care -- showcased their capabilities at the Entrepreneurs-in-Readiness (EIR) event at the Livermore Valley Open Campus' High Performance Computing Innovation Center.
The event was part of an EIR program developed by the Lab's Industrial Partnerships Office (IPO) to connect nascent companies with entrepreneurs and investors. The idea is to engage a diverse group of entrepreneurs and industry experts from Silicon Valley to help nurture promising new early stage Lab technology companies toward commercialization.
ipo.llnl.gov
You will hear about an advancement for imaging during endoscopic surgery. The endoscopic system design and image acquisition method could provide low-cost and real-time surgical navigation capability with optimized sensitivity and functionality.
You will hear about LLNL's computational capabilities and disruptive science available to industry through the Lab's High Performance Computing Innovation Center. Offering industrial clients and partners access to decades worth of experience and expertise, the HPCIC provides true innovation in an accessible, collaboration-friendly environment. The result is transformational solutions unachievable elsewhere.
August 2012
You will hear about a patented LLNL optical diagnostic microscope design that can provide real-time imaging for tissue pathology and many other market applications.
October 2011
You will hear about LLNL's work in building medical sensing capabilities to enable better trauma and critical care in austere environments.
December 2012
You will hear about LLNL's capability developed around adaptive optics technology. Specifically, a retinal imaging application will be highlighted and you will be introduced to its ability to be used in a number of market applications.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Richard's entangled aventures in wonderlandRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Optical Transconductance Varistor (Opticondistor): Potential replacement for high power switch modules by Stephen Sampayan of LLNL
1. Potential replacement for high power switch modules
LLNL-PRES-769514
This work was performed under the auspices of the
U.S. Department of Energy by Lawrence Livermore
National Laboratory under contract DE-AC52-07NA27344.
Lawrence Livermore National Security, LLC
Stephen Sampayan, Ph.D.
2. Future markets will be driven by
“power modules”
Market drivers include industrial
motor drives, transportation,
renewable energy, and power
Market share with existing
technology is presently
dominated by Asia/Pacific
manufacturers
Lawrence Livermore National Laboratory LLNL-PRES-769514
* www.yanoresearch.com/press/pdf/1095.pdf
2
Market examples
(from “Market & Development Report”
Yole Development 2011/2012)
3. Fundamental difference:
• Existing technology=junction device (1925 Patent)
• Opticondistor=bulk conduction device (2013 Patent)
Withstands higher voltages and currents
• Overcomes the power and voltage limitations of existing
electronic devices
Direct control by light rather than an electrical signal
• Multiple devices can be cascaded while maintaining
isolation of the control circuitry
Developed in support of DoE particle accelerator
technology and RF production
Lawrence Livermore National Laboratory LLNL-PRES-769514
Opticondistor
3
Optical
Modulation
Opticondistor
Energy
Storage
INPUT: Laser
Modulation
OUTPUT:
High Power
Load
Low level
electrical input
4. Induction motors consume ~50% of power
generated and are generally constant
speed*
Control of motor speed for off-peak use
significantly impacts total power
consumption
Present speed control systems can be
complex and expensive because of device
voltage limitations (right)
Higher voltage devices greatly simplify
circuitry, reduce cost and will expand use
Reduced generation requirements result
Lawrence Livermore National Laboratory LLNL-PRES-769514
4
Typical >100 kW class drive
*see for instance: H. Sarhan, "Energy Efficient Control of Three-Phase Induction Motor Drive," Energy and Power Engineering, Vol. 3 No. 2, 2011, pp. 107-112. doi: 10.4236/epe.2011.32014
Our goal
5. A brassboard system is being
fielded in 12 months for a defense
sponsor -TRL 4-5
We are doing preliminary work to
leverage LLNL laser expertise to
develop single hybrid modules -
TRL 2-3
Preliminary models project
competitive cost with existing
devices
Lawrence Livermore National Laboratory LLNL-PRES-769514
5
6. We have operated our device well beyond
the 5 x 105 Hz limit of power MOSFETs (right)
• higher inverter frequency significantly decreases
system transformer size (right)
• decreased transformer size also decreases
wasted energy (hysteresis loss)
We have demonstrated active control of
>20kV in a single device
We have demonstrated isolation between
“control input” and “high power output”
These properties are unique compared to
existing technology
Lawrence Livermore National Laboratory LLNL-PRES-769514
From: A. Nakagawa, Y. Kawaguchi and K.
Nakamura, Silicon Limit Electrical Characteristics
of Power Devices and ICs”, Proc. ISPS’08, 2008,
pp. 25-32
6
High impact regime
Moderate Impact
regime
108
107
106
105
104
103
102
101
Power, VA
101 102 103 104 105 106
Frequency, Hz
SCR
IEGT
IGCT
IGBT
Module
Discrete
IGBT
MOS
FET
60 Hz, 425-A welder
transformer compared to an
equivalent 20-100 kHz welder
transformer
http://www.millerwelds.com/resources/articles/welding-inverters-decrease-
maintenance-downtime/
7. Standard technology
Electronically slow
• low efficiency and large system size
Voltage limited; <20 kV (typical 1 to 6 kV)
• requires significant system complexity
No isolation between high power and low
power control
Devices are complex microstructures
structures and require highly specialized
fabrication technology
• market entry requires $100M investment and
10 years to realize a return*
Lawrence Livermore National Laboratory LLNL-PRES-769514
7
Opticondistor
Electronically fast
• reduces transformer and other component sizes
• higher efficiency
Voltage unlimited; tests exceeded 30 kV
• simplified system implementation
Full electrical isolation between device and
control, enables cascading
Uses LLNL IP, simpler process
• market entry requires much less costly
infrastructure, faster return on investment
http://electroiq.com/blog/2012/11/gsa-working-group-evaluates-new-semiconductor-startup-models-to-attract-investors/
8. Genaro Mempin
+1 925 423 1121
mempin1@llnl.gov
Lawrence Livermore National Laboratory LLNL-PRES-769514 8