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1985 articles for “suction/injection two rotating discs” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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The Transient Response and Frequency Characteristics of Power Transformers having Non-uniform Winding Insulation
Abstract: This paper presents a Laplace-domain distributed-parameter technique for analyzing the transient and frequency response of power transformers having non-uniform winding insulation. Stronger winding insulation near the windings source side terminals is usually applied in order to mitigate the concentration of the transient voltage stresses close to these locations. This will result in a location-dependent inter-turn capacitance distribution. The suggested procedure for analyzing such windings is based on the cascade connection …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 1, 2014 · pp. 37–52 Read article
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A Hybrid Cascaded Multilevel Inverter using Space Vector Pulse Width Modulation
Abstract: This paper proposes a topology of hybrid cascaded multilevel inverter consisting of two inverters namely main inverter and auxillary inverter. Main inverter consists of three-leg inverter with single DC source and auxillary inverter consists of three H-bridge two-leg inverter with separate DC sources for each H-bridge. Switches used in our proposed method are IGBT (insulated-gate bipolar transistor). The proposed model consists of 18 switches. The switches are controlled by space …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 1, 2015 · pp. 14–19 Read article
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DGA Analysis of Transformer Oil with Experimental Investigation: An Effective Tool of Condition Monitoring for Power Transformer
Abstract: Dissolved Gas Analysis (DGA) is usually performed for power transformer condition based maintenance activities. The DGA has become a very popular technique for the monitoring the overall health of a power transformer. It is possible to distinguish faults such as partial discharge, over-heating, and arcing in a great variety of oil filled power transformers. A number of samples must be taken over a period of time to discern trends and …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 2, 2015 · pp. 9–16 Read article
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A High Static Gain Modified SEPIC Converter for Renewable Applications
Abstract: This paper presents a high step-up DC-DC converter based on the modified single ended primary inductance converter (SEPIC) for achieving high static gain. This converter topology is the combination of a classical boost converter and a conventional SEPIC converter. For low input and high output voltage applications, the modified SEPIC converter provides low switch voltage, low input current ripple and high step-up static gain. Therefore, this converter is suitable for …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 2, 2015 · pp. 19–40 Read article
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The Role of SCADA in Detecting Electric Faults in the Wind Turbine System: A Review
Abstract: A wind turbine is a machine which utilizes the kinetic energy of air to convert it into rotational energy. To generate the electricity, this rotational energy is transferred to the generator shaft. Whenever a fault occurs in the wind energy system, it decreases the system efficiency. During such abnormal conditions in a wind turbine system, the faults are detected through manual and/or automated system namely, SCADA. The control functions of …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 1, 2023 · pp. 16–24 Read article
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CFD simulation of methane flow through an orifice plate
Abstract: In this paper the effects of errors in the flow rate and discharge coefficient when Methane (CH4) flow through orifice plates with flange tapping has been investigated by the Computational Fluid Dynamics (CFD). The location of vena- contracta was also estimated from CFD simulations. Outcomes of the CFD simulations are in terms of profiles of pressure and velocity. In this study a numerical investigation of the flow characteristics behavior caused …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 1–6 Read article
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Effect of Variation in LPG Composition on Heating Value Using Aspen HYSYS
Abstract: Liquefied petroleum gas (LPG) is becoming an increasingly important part of the world’s energy sources. The determination of the heating value of LPG is of great economic importance in domestic and industrial purposes. This paper discusses the effects of impurities (e.g., moisture, H2S) and the presence of other hydrocarbons (e.g., ethane, pentane, propene, and butene) on the heating value of LPG fuel with different propane to butane. Different LPG composition …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 51–57 Read article
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Evidence of PDMS-based foam control agent mechanism on crude oil foams
Abstract: Crude oil foam is a frequent problem faced in oil production operations that can cause the reduction of the separator efficiency, separator overflow, carry out of liquid by the gas stream, and other serious problems. Among the techniques used to attenuate foams in crude production, the injection of chemical additives is still considered one of the most efficient. However, the effectiveness of a foam control agent (FCA) is limited to …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 3, 2023 · pp. 13–23 Read article
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Design And Construction of a Vehicle With 360-Degree Wheels
Abstract: - To decrease the amount of time it takes to turn from one direction to another, 360-degree wheel turning vehicles with steering systems were designed and built. These vehicles may travel in any direction while remaining in the same location. This vehicle moves in all direction. To cut down on the amount of time it takes to turn from one direction to another, a 360-degree wheel rotation vehicle with steering …
Published in Journal of Production Research & Management · Vol. 12, Issue 2, 2022 · pp. 30–35 Read article
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Study and Implementation of I2C Bus Controller using Verilog HDL
Abstract: AbstractInter Integrated Circuit is a Philips semiconductor. This bus is a two-wire, low to medium speed, correspondence transport created by Philips Semi-conductors. It gives capable chip to chip correspondence. I2C is found in for the most part specialized devices. Two bus lines are required SDA and SCL (serial information and serial clock line) both should be pulled up with a resistor to +Vdd. Serial, 8-bit arranged, bidirectional information exchanges can …
Published in Journal of Semiconductor Devices and Circuits · Vol. 4, Issue 1, 2017 · pp. 29–33 Read article
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Equivalent Linear Circuit for Thevenin and Norton Representation Using Superposition Theorem
Abstract: Using superposition theorem and knowing the Thevenin representation consisting of resistor, independent DC source of a network an equivalent DC network is obtained using SPICE software with linear circuit elements and independent sources and is verified. Also, similarly from the Norton representation, equivalent circuit is obtained. A procedure with Pspice methods to obtain unknown circuit elements using reciprocity theorem is described. Possible examples for (a) only resistive networks and (b) …
Published in Journal of Semiconductor Devices and Circuits · Vol. 10, Issue 2, 2024 · pp. 1–6 Read article
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Effect of Partial Fixity on Negative Bending Moments in RCC Frames
Abstract: This paper presents the variation of bending moments in the RCC frames structure for different ratios of moment of inertia of the column and the beam (IC/IB). In this study, three different cases of frames structure are considered e.g. the first case is single bay single storey to single bay five storied frames structure, the second case is two bays single storey to two bays five storied frames structure and …
Published in Journal of Structural Engineering and Management · Vol. 4, Issue 1, 2017 · pp. 73–80 Read article
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Design and Analysis of Different Welding Joints
Abstract: Two parts linked together by the use of localised heat or fusion is called a weld; they join together either with or without the use of pressure or filler material application. Necessary heat required is obtained by burning of gas or by using an electric arc. The word joint and weld are different, weld means joining of two metals by heat and joint means a point where two parts are …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 4, Issue 2, 2017 · pp. 18–22 Read article
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Low-Velocity Impact Behaviour of 3d Printing Techniques Using Fiber Reinforcement Polymer Composites: A State of the Art Review
Abstract: Additive manufacturing (AM) is one of the pioneering fields of composite manufacturing, not only in the fabrication of composite all other emerging fields also utilize this technology. Fibers are one of the predominant reinforcing agents which are used to fabricate composite materials for many applications. This review article provides a detailed discussion about the role of 3D printing technology using fiber-reinforced composites in low-velocity applications. 3D printing technology provides very …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 2, 2021 · pp. 1–7 Read article
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Biomaterials, Colloid and Surface Chemistry
Abstract: Colloids and colloidal systems are crucial in a variety of commercial and industrial settings. They function in everyone’s cell- Blood, Blood fluid, intracellular fluids also known as “Humours”. Colloidal science, on the other hand, is a nascent field with a small number of certified professionals compared to other fields of study. Furthermore, most colloidal research has been limited to industrial operations. Agriculture, the concrete industry, horticulture, the floral business, mining, …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 3, 2021 · pp. 22–27 Read article
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Uses of Biomaterials and Biocompatible Materials
Abstract: Biomaterial evolution is not an innovative study field; it has been heading on for approximately half - century. Biomaterial science is the restraint that concentrates on the research of biomaterials. It is a highly contested discipline of science that has witnessed sustained, robust growth over the span of its existence. Many businesses have made considerable financial investments in the innovation of fresh products. The disciplines of biology, chemistry, engineering of …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 3, 2022 · pp. 20–24 Read article
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Low-Offset High Speed CMOS Voltage Comparator using 180 nm Technology
Abstract: A low Off-Set high-speed two-stage dynamic comparator is presented. In this circuit, PMOS transistors are used at the input of the first and second stages of the comparator. At the evaluation phase, the second stage is activated after the first stage with a predetermined delay to achieve a controllable pre-amplifier gain. Also, the first stage is turned off after the delay to reduce overall power consumption. Simulation results in 0.18µm …
Published in Journal of VLSI Design Tools and Technology · Vol. 7, Issue 3, 2017 · pp. 21–27 Read article
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Memristor based Material Implication Logic for Implementation of Basic logic Gates and Circuits
Abstract: A physical memristor was realized a few years back by Hewlett Packard labs. Instantly it became the topic of interest for many scientists and researchers. Memristor has joined resistor, capacitor and inductor in the list of basic two-terminal passive circuit elements. Field Programmable Gate Arrays (FPGAs) have become a major choice of technology for the implementation of various digital circuits because they offer various features such as quick time to …
Published in Journal of VLSI Design Tools and Technology · Vol. 8, Issue 1, 2018 · pp. 17–22 Read article
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Design of Active Filter using CMOS based IInd Generation Current Conveyor in Current Mode
Abstract: Traditional design techniques used in VLSI are in voltage mode, but these have drawbacks like low bandwidth, non-linearity and less gain. Current conveyors act similar to operational amplifiers but are advantageous over older VLSI design techniques because of high bandwidth-gain product, reduced power consumption etc. This paper consists of two parts: circuit diagram of current conveyor (which is a three terminal analog device) is discussed first and its working is …
Published in Journal of VLSI Design Tools and Technology · Vol. 9, Issue 1, 2019 · pp. 15–21 Read article
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Design of 8 Bit High Speed Pipelined ADC
Abstract: High-speed, medium-resolution, analog-to-digital converters (ADCs) are important building blocks in many electronic applications. The demand for high-speed, medium resolution, low power ADCs is satisfied by various ADC architectures like folding, flsubranging, pipeline etc. Of these, pipeline architecture has proven to be the most efficient for applications such as digital communication systems, data acquisition systems and video systems. Pipelined ADC offer attractive combination of high-speed, high-accuracy and low power consumption, which …
Published in Journal of VLSI Design Tools and Technology · Vol. 5, Issue 2, 2015 · pp. 71–80 Read article