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348 articles for “external”
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Circuit Topologies, Operation, Control Schemes and Modulation Techniques of Modular Multilevel Inverter
Abstract: The Modular Multilevel Converter (MMC) is one of the developing topology. MMC has several attractive features such as a modular structure, transformer-less operation, easily scalable in terms of voltage and current, low expense for redundancy and fault tolerant operation and excellent output waveforms quality. Due to these attractive features industry and researcher increased the interest in this converter. This interest results in the development of new power topologies, modulation strategies …
Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 1, 2017 · pp. 28–40 Read article
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Study Analysis of Decisive Cost and Quality
Abstract: In this article, we discuss the beneficial level of a machine according to its features. Here, two methodologies are used to take decision according to some internal features and external aspects. First use analytical hierarchy process method for survey. Generally, parameters generated by analytical hieratical process (AHP) is preferred by consumers. Nowadays quality is most preferable parameter (in cutting machine use 46% approximate). Second one is productivity (33% approximate); we …
Published in Journal of Production Research & Management · Vol. 9, Issue 2, 2019 · pp. 20–28 Read article
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A Case Study on Performance of Credit Rating Agencies: An Overview
Abstract: Credit rating is one of the significant supporting services for the development of debt capital market. Recently, credit rating agencies have also started playing a pivotal role in the development of Indian common stock market by grading IPOs. But the rating agencies and their services are under scanner, particularly after the eruption of recession. In the backdrop of debate over the working of credit rating agencies all over the world, …
Published in Journal of Production Research & Management · Vol. 5, Issue 2, 2015 · pp. 16–23 Read article
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Dynamic Analysis of the Proposed Bi-directional Converter for Charging and Discharging Operation
Abstract: AbstractThis paper proposes a fifth order bi-directional converter configuration with low current ripple on either side as well as good voltage conversion range having only three switches. This converter is implemented for load power levelling between a DC grid and secondary batteries. A comparative study of proposed topology with widely used bi-directional converter configurations is made and relative merits and demerits are pointed out. With state-space and discrete-time modelling techniques, …
Published in Journal of Semiconductor Devices and Circuits · Vol. 4, Issue 2, 2017 · pp. 41–51 Read article
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AMBA 3 AHB Lite Protocol design and verification
Abstract: As technology progresses, the amount of logic and transistors that can be packed on a device that runs an extreme integrated SoC design grows. The most significant feature of a SoC is its connectivity. In most SoCs, the AMBA (Advanced Microcontroller Bus Design) bus is the most often used on-chip bus design.AMBA was first introduced by ARM. The AMBA AHB-Lite synthesizable design meets the requirements of high-performance synthesizable designs. Because …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 3, 2021 · pp. 47–55 Read article
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Effect of Outriggers Location on Performance of RC Building Subjected to Loss of a Column
Abstract: Progressive collapse denotes a failure of substantial part of the structure, causing greater damage to the structure than the initial impact, which has been initiated by failure of a relatively small part of the structure such as failure of any vertical load carrying elements (typically columns). Failure of large part of any structure will result into substantial loss of human lives and natural resources. Therefore, it is important to prevent …
Published in Journal of Structural Engineering and Management · Vol. 4, Issue 1, 2017 · pp. 65–72 Read article
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Torsional Strengthening of RC Beam using Ferrocement Jacketing
Abstract: Due to the type of loading on the structure, it is generally known that there are four structural actions: axial force, shear, bending, and torsion. The reinforced concrete beams are said to be subjected to torsion, when the point of application of lateral loads does not coincides with shear center of the beam. These loads may be due to loading pattern or connection of beam. Torsional failure is typically seen …
Published in Journal of Structural Engineering and Management · Vol. 9, Issue 2, 2022 · pp. 13–23 Read article
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A Common Mode Scan Based BIST for Stuck-at-Fault and Path Delay Fault
Abstract: Testing for delay and stuck-at faults requires two pattern tests and test sets are usually large. Built-in self-test (BIST) scheme is attractive for comprehensive testing. The BIST test pattern generators (TPGs) for such testing should be designed to ensure high pattern-pair coverage. In the proposed work, necessary and sufficient conditions to ensure complete/maximal pattern-pair coverage for sequential circuit have been derived. A new test data-compression scheme is an effective approach …
Published in Journal of VLSI Design Tools and Technology · Vol. 8, Issue 2, 2018 · pp. 72–78 Read article
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Automatic Switch cum Fuse IC for Low Voltage, Low Power, High Performance Current Conveyors
Abstract: The paper focuses on the analysis of switch cum fuse IC in signal processing. In signal processing it is proposedto prevent the damage of main IC from the external electrical fluctuations which are common in -these days. Theproposed FUSE IC is also able to act as fuse for many times for main IC so that it can prevent the damage. It’slike the work of MCB but a step ahead that …
Published in Journal of VLSI Design Tools and Technology · Vol. 1, Issue 1-2-3, 2011 · pp. 21–25 Read article
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Design of 16-bit Pipelined RISC Processor
Abstract: This paper presents the design of efficient and high throughput 16-bit pipelined RISC Processor. The design is challenge with the pipelined stall problem, speed with external memory, coding density and clock frequency for cost effectiveness and higher performance processor design. Paper describes about the architecture, programming model, synthesis results and analysis of the design. The presented design has throughput ~167 MIPS at 500 MHz, which shows better performance at a …
Published in Journal of VLSI Design Tools and Technology · Vol. 2, Issue 1-2-3, 2012 · pp. 32–37 Read article
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Technology Limits on Differential Gain and Unity-gain Bandwidth of a Differential Amplifier: A Theoretical Analysis
Abstract: The limiting relationship between differential dc voltage gain and unity-gain bandwidth of an externally unloaded differential amplifier have been explored. It has been observed that the product of differential dc voltage gain and unity-gain bandwidth of a differential amplifier has an upper limit which is a technology constant. Keywords: Technology limits, differential amplifier
Published in Journal of VLSI Design Tools and Technology · Vol. 2, Issue 1-2-3, 2012 · pp. 118–124 Read article
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Voltage Sag Mitigation with Different FACTS Devices: State of Art
Abstract: The power system's internal and external variables, however, have an impact on the quality of the power delivered. The system's performance suffers from harmonics, voltage, and frequency changes. Voltage fluctuation, a common issue with power quality, is covered in this paper. The most prevalent issue is a sag or dip in voltage. To solve this issue, there are several approaches. FACTS device usage is one of them and is effective. …
Published in Journal of VLSI Design Tools and Technology · Vol. 12, Issue 3, 2022 · pp. 29–34 Read article
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Effectiveness of Semi-Active Variable Stiffness Tuned Mass Damper for Seismic Load Using LQR Control
Abstract: In this study, effectiveness of semi-active variable stiffness tuned mass damper in reducing seismic response of 10-story frame structure is evaluated. The variable stiffness device, comprising four spring, having rhombus configuration, adapted from literature is attached to the tuned mass damper. A control algorithm using state space form of governing equation of motion is developed. LQR controller is employed to obtain control force based on displacement and velocity response feedback. …
Published in Recent Trends in Civil Engineering & Technology · Vol. 10, Issue 1, 2020 · pp. 11–11 Read article
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A Study on Strength and Durability of Fly Ash–Metakaolin Blended Geopolymer Concrete
Abstract: Production of cement causes 8% of the total carbon dioxide emissions in the world. Finding a right alternative to cement is the need of the hour, to eliminate environmental pollution caused by cement production. A substitute for conventional concrete can be industrial waste products like GGBS, Flyash, Metakaolin, and so on, these mineral admixtures can be used to fully replace cement with some activators this mix of mineral admixtures and …
Published in Recent Trends in Civil Engineering & Technology · Vol. 12, Issue 3, 2022 · pp. 51–59 Read article
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Intelligent Border Alert and Boat Security System
Abstract: AbstractNatural calamities are always miserable for the fishermen and sea travelers. In fact, they have to face plethora of systematic challenges. For instance, sudden climate changes, which will pause their further journey amidst the sea for long time without food and any external communication and will result in life threatening situations. Furthermore they failed to control the water flow inside the boat. Even though there are traditional methods by using …
Published in Recent Trends in Electronics Communication Systems · Vol. 7, Issue 2, 2020 · pp. 9–12 Read article
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A Review on Magnetorheological Fluids and its Stabilization Techniques
Abstract: AbstractMagnetorheological fluids are fluids which can alter its physical and rheological properties in response to an external magnetic field. They find many applications in shock absorbers, semi-active dampers, clutches, brakes, haptic actuators and devices. The rheological properties of these fluids can be altered using additives in the fluid composition and hence, the limitations due to settling tendency can be reduced to an extent. Hence, a detailed study on stabilization of …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 2, 2018 · pp. 13–22 Read article
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A Review on Earth-Air Heat Exchanger Systems
Abstract: AbstractEarth-air heat exchanger (EAHE) is a system which uses the heat and cool of ground and is utilized for the space heating and cooling purposes. Performance of EAHE is dependent on the thermal properties of soil. If the thermal quality of soil is poor so the pipe is to be buried at more depth. The concept exploits the subsoil thermal energy and uses it for producing indoor thermal comforts in …
Published in Recent Trends in Fluid Mechanics · Vol. 7, Issue 1, 2020 · pp. 9–14 Read article
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A Review on Erosion in Pipeline
Abstract: AbstractElbows are used widely in oil and gas extraction pipelines, ammonia gas plants, refineries, power plants etc. Pipeline erosion remains a major headache for petroleum industry with its underlying safety. The erosive problems of the pipelines influence the performance of pipe system. Continuous arrangement of elbows is often necessary due to the limit of external space and connection length between elbows is short under the circumstance. This paper presents an …
Published in Recent Trends in Fluid Mechanics · Vol. 7, Issue 1, 2020 · pp. 20–23 Read article
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Multi Base Station optimized Positioning for Black Hole Attacks in Wireless Sensor Networks
Abstract: AbstractA wireless sensor network (WSN) consists of distributed autonomous sensors to monitor environmental or physical conditions, such as temperature, sound, pressure, etc. and to pass your data to the main location through the network data through the network to the main location. Modern networks are bidirectional. They also allow control of sensor activity. So, the main problem for this is security, since some attacks are presented in the network to …
Published in Recent Trends in Sensor Research & Technology · Vol. 5, Issue 3, 2018 · pp. 19–26 Read article
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Accident Prevention System Using Multisensors
Abstract: In developing countries, one of the main The reason for death is road accidents. Especially in a diverse country like India we can see all types of terrains and slopes which are sometimes difficult to drive on [1]. For humans while driving the primary concern is always safety Therefore, we should be always extra cautious whenever we are driving. But accidents are not only caused by not only by external …
Published in Recent Trends in Sensor Research & Technology · Vol. 8, Issue 1, 2021 Read article