scispace - formally typeset
Search or ask a question

Answers from top 8 papers

More filters
Papers (8)Insight
My contribution emphasizes the importance of these issues for AC.
Proceedings ArticleDOI
Jiachuan You, Cai Hui 
01 Oct 2014
9 Citations
The paper proposes a novel AC-AC converter based on the Switched-Capacitor principle, which can achieve a ratio of 1/4.
The asymmetrical capacitors AC/GP and AC/HC with intercalated negative electrodes show higher capacities than that of AC/AC capacitor.
Compared with the reported flying-capacitor switched-capacitor ac–ac converter, the proposed converter requires fewer switches and capacitors per unit of voltage conversion, thus suffering lower voltage stress.
Proceedings ArticleDOI
Wanglok Do, Ichirou Oota, Kei Eguchi 
01 Jun 2017
4 Citations
This paper proposes a novel switched-capacitor (SC) ac-ac converter using nested voltage equalizers.
For the moment, there are two broad uses of unit root econometrics, and I think it is best to organize my thoughts about what macroeconomists need to know about unit root econometrics by how they use it.
This paper proposes a new topology for a three-phase open-delta connection ac-ac converter based on the switched capacitor principle.
Proceedings ArticleDOI
01 Aug 1979
9 Citations
My work falls short of program verification not only because I wanted to be able to check a program quickly, but also because I was unwilling to force the programmer to specify the program in that much detail.

See what other people are reading

What are the problem statement in bidirectional dc dc converters?
5 answers
The problem statements in bidirectional DC-DC converters include challenges related to conduction mode, control strategy, voltage imbalance in bipolar DC microgrids, and the need for bidirectional energy flow in DC-AC converters. Specifically, issues such as losses due to high-frequency switching, reverse recovery diode losses, voltage imbalances in bipolar DC microgrids, and the limitation of existing converters to handle bidirectional energy flow are highlighted in the research papers. These challenges necessitate the development of innovative approaches for interleaved bidirectional converters to address conduction mode efficiency, control strategies, voltage balancing in microgrids, and bidirectional energy flow requirements in DC-AC converters.
When does one see fractional shapiro steps?
5 answers
Fractional Shapiro steps are observed in Josephson junctions with a skewed current-phase relation when driven at higher reduced frequencies, typically achieved by changing the critical current through the application of a magnetic field. These steps serve as a distinctive signature of the non-sinusoidal current-phase behavior in the junctions. Additionally, in the context of topological superconductivity, the manifestation of Majorana zero modes is expected to lead to specific patterns of Shapiro steps, such as the absence of certain steps like the first Shapiro step or multiple missing odd-order steps. However, caution is advised when interpreting experimental results related to Shapiro steps in superconducting weak links, as features resembling those in topological junctions can also be observed in non-topological systems.
How do distribution stations impact the efficiency of electricity distribution to end-users?
5 answers
Distribution stations play a crucial role in ensuring efficient electricity distribution to end-users. They are responsible for organizing conductor elements in a structured manner to avoid tangling. By accurately identifying the network's topology through big data technology, distribution stations enhance the accuracy of distribution network operations. The safe and reliable operation of distribution stations is vital for maintaining stable distribution systems, especially as load capacity increases. Regular updates and optimization of distribution schemes, along with the adoption of measures to reduce power losses, are essential for improving distribution efficiency. The rise in electric vehicle charging stations poses challenges to distribution systems, emphasizing the need for well-planned infrastructure to mitigate adverse impacts on power distribution parameters. Ultimately, efficient distribution stations are key to ensuring reliable electricity supply to end-users.
What is rna gelation?
5 answers
RNA gelation refers to the process where RNA molecules undergo a liquid-solid phase transition, forming interconnected compartments with solid-like properties. This phenomenon is achieved by utilizing RNA hairpin coat-protein binding sites to create synthetic RNA-based gel-like granules via phase transition. These granules act as storage compartments for both proteins and RNA, with a controlled release profile determined by the number of hairpins encoded in the RNA. Additionally, studies have shown that RNA molecules containing specific repeat sequences can form gel-like structures, termed RNA foci, which have implications in neurodegenerative disorders like ALS and Huntington disease. The gelation of RNA molecules can have significant implications in both biotechnology and understanding the pathogenesis of certain diseases.
How to use the next generation matrix FV^{-1}?
4 answers
The next-generation matrix FV^{-1} can be utilized in various contexts based on the research papers provided. In epidemiology, this matrix is employed to calculate sources, sinks, and metapopulation persistence in marine metapopulations. Additionally, it is used in infectious disease outbreaks to estimate the proportion of undetected cases, aiding in evaluating the effectiveness of contact tracing and surveillance systems. In the field of power generation systems, a VF-input matrix converter has been developed, showcasing the capability of wide frequency variation acceptance and high power density, enhancing energy conversion efficiency. Moreover, the matrix is extended to calculate R₀ in ecological communities to understand the dynamics of infectious agents in interacting host and non-host species.
Is schrodinger has been studied in various feilds, particularly in non-relativistic regime?
4 answers
The Schrodinger equation has been studied in various fields, particularly in the non-relativistic regime. It has been applied to describe laser-matter interactions and relativistic corrections in multiphoton ionization of atoms. Additionally, a formalism has been developed to obtain the solution of the Schrodinger equation in a non-inertial frame, considering the motion of the frame relative to an inertial frame with acceleration. The position-dependent mass framework has also been investigated in the context of the Schrodinger equation, specifically in the study of a Fermi gas with an infinite square well potential. These studies highlight the versatility and applicability of the Schrodinger equation in understanding various physical phenomena in both non-relativistic and relativistic regimes.
How does the classic population control circuit utilize negative feedback to regulate population growth?
5 answers
The classic population control circuit utilizes negative feedback to regulate population growth by implementing dual feedback control loops. These control loops enable the circuit to achieve two control objectives: regulating the total cell population and controlling the relative ratio between cell strains in a culture containing two different cell strains. The circuit architecture is designed to be general and applicable to any organism with synthetic biology tools for quorum sensing, output comparison, and growth control. The use of negative feedback in the circuit ensures robustness and adaptation to perturbations in cell growth rate and changes in cell numbers. By combining both control loops, the circuit allows for the setting of both the total population size and the relative cell strain ratio through reference signals.
What is super capcitors?
5 answers
Supercapacitors, also known as electrochemical capacitors, are energy storage devices that have greater energy storage capacity than traditional capacitors and can deliver electricity at higher rates than batteries. They store electric charges either by electric double layer capacitance or fast faradic redox reactions that occur at the surface or sub-surface of the electrode material. Supercapacitors have been extensively employed in portable electronic devices due to their high storage capacity. Research efforts have focused on improving the energy density of supercapacitors by developing electrode materials with high specific capacitance and devices with higher cell voltage. Recent advances in electrode materials, including carbons, conducting polymers, metal oxides, and metal sulphides, have pushed the limits of capacitance per unit weight and volume. Supercapacitors have also been used in applications such as e-mobility, where they can overcome the disadvantages of lithium-based batteries. Additionally, supercapacitors have been used in photovoltaic power generation systems to improve power quality and supply continuity.
What is the difference between DC and AC circuits according to Johnson's (2018) research in IEEE Potentials?
5 answers
DC circuits and AC circuits have fundamental differences. In DC circuits, interrupting the current is more challenging because there is no natural current zero-crossing, unlike in AC circuits. This makes the interruption of high currents in DC grids more difficult and requires specialized circuit breakers that can quickly break the current and mitigate the magnetic energy stored in the system. On the other hand, AC circuits have a natural current zero-crossing, which makes interrupting the current easier. AC circuit breakers, such as mechanical circuit breakers, have been traditionally used to protect AC circuits. However, with the increasing use of DC power distribution technologies like DC microgrids, there is a need for better disruption performance in DC circuits, leading to the development of DC circuit breakers with specific features like quick and reliable switching speeds.
What factors influence the amount of electricity saved through the application of solar-powered lighting in Brgy San Cristobal?
5 answers
The amount of electricity saved through the application of solar-powered lighting in Brgy San Cristobal is influenced by several factors. One factor is the optical efficacy of the light emitting diode (LED), which has exceeded 72 lm/W in 2006. Another factor is the design and implementation of the lighting system, including the use of solar panels, batteries, boost converters, microcontrollers, and high power LEDs. The power management capability and storage of the lighting system also play a role, with the use of a relay module as the charge controller enhancing efficiency. Additionally, the solar-powered LED energy-saving lighting device itself can impact the amount of electricity saved, with features such as over-charge protection, over-discharge protection, and reverse-polarity prevention. Overall, these factors contribute to the effectiveness and efficiency of solar-powered lighting in saving electricity in Brgy San Cristobal.
What is the costs Gemini for Google Workspace for business standard google workspace?
4 answers
Gemini is a system designed to achieve cost reduction in datacenter network designs by using blocking network designs. It optimizes topology and routing based on historical traffic matrices to maintain application-perceived performance. Gemini categorizes production fabrics as low or high volatility and finds near-optimal topologies and routing for low-volatility fabrics. For high-volatility fabrics, it uses multi-traffic-matrix optimization and hedging to avoid frequent topology reconfiguration. Gemini can support existing workloads on production fabrics using a spine-free topology that is half the cost of the existing topology. Gemini is also the first functional object produced using a hybrid additive-subtractive manufacturing approach, combining 3D printing and CNC milling techniques. The GEMINI project aims to develop a platform for user-friendly interactive multilingual and multi-modal dialogue interfaces to databases, with the ability to generate dialogue applications with minimal human effort. There is no information about the costs of Gemini for Google Workspace for business standard google workspace in the provided abstracts.