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427 articles for “DC”
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RF Energy Harvesting from Wi-Fi Router in 2.45 GHz ISM Band
Abstract: In this paper, an experimental RF energy harvesting system using rectifying antenna (rectenna) to harvest ambient energy from Wi-Fi at 2.45 GHz is presented. The proposed circuit is a combination of RMPA, followed by a third order stepped impedance low-pass filter, matching network and rectifier using Schottky diode for microwave (RF) to DC conversion. The performance of the rectenna is simulated by electromagnetic simulator computer simulation technology (CST) microwave studio. …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 3, 2015 · pp. 21–25 Read article
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Analysis of Cascaded Multilevel Inverter Induction Motor Drives
Abstract: The goal of this thesis is to use harmonic analysis to learn more about the performance of various cascaded multilevel inverters. To handle the high power demands of large electric drives and utility applications, innovative power electronics converters are required. As a result, in high power and medium voltage conditions, multiple power converter structures have been offered as an option. A multilayer converter not only achieves high power ratings, but …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 3, 2021 · pp. 22–42 Read article
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A Transformer-based Multilevel Inverter with Lesser Components
Abstract: This paper presents a multilevel inverter topology with lesser number of components than a conventional multilevel inverter, thereby reducing the overall cost of the same. Here, a nine-level transformer-based multilevel inverter topology is proposed which uses only 8 switches while a conventional transformer-less multilevel inverter uses 16 switches for achieving the same voltage level. The structure consists of a single dc source feeding two standard H-bridges. The process of intermediate …
Published in Journal of Microelectronics and Solid State Devices · Vol. 6, Issue 2, 2019 · pp. 1–12 Read article
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Simulation and Design of PI-Controller for the Control of Buck Converter
Abstract: AbstractIn this paper, a proportional-integral (PI) controller is designed for the control of Buck converter to maintain its output as a constant for a varying input supply. To meet the power needs of a constant output, this study examines the DC / DC converter with primarily focusing on the design of PI controller for the control of Buck converter. This study was simulated using MATLAB/Simulink, and it was followed by …
Published in Journal of Microelectronics and Solid State Devices · Vol. 7, Issue 1, 2020 · pp. 26–33 Read article
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A Novel PWM Based STATCOM Controller for Power Quality Enhancement in Distributed System
Abstract: Static Synchronous Compensator has the capability for the improvement in damping factor and stability by managing the reactive power output. As the STATCOM will itself absorb the reactive power which comes from the distribution line when we apply the capacitive load. To get the higher performance of STATCOM we are mainly depend over control algorithms. As the real power factor has been absorb by the STATCOM at the time when …
Published in Journal of Microelectronics and Solid State Devices · Vol. 8, Issue 2, 2021 · pp. 24–32 Read article
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PFC-BL-CSC Converter Fed Sensorless BLDC Motor Drive
Abstract: BLDC motors drives have gained importance due to power quality improvements and high efficiency. In low and medium power applications, it is mostly preferred. The speed control and power factor correction of the BLDC motor drive is achieved using a PFC converter. Here a bridgeless CSC converter is used. This configuration has numbers of advantages over other configurations of the converter. In this paper, position sensing is done based on …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 1, 2019 · pp. 27–33 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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Control of a Grid-Connected Variable Speed Permanent Magnet Synchronous Generator Based Wind Power Generation System
Abstract: Variable speed wind turbines are more efficient compared to their fixed speed counterparts since maximum power is extracted over a wide range of wind speeds. In this work a grid-connected wind power generation system is modeled and implemented in Matlab/Simulink using a permanent magnet synchronous generator. A back to back space vector pulse width modulated voltage source converter converts the variable frequency generator currents and voltages into DC, then back …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 8–24 Read article
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Functional Coding of Maximum Power Point Tracking by Using Perturb and Observe Method in MATLAB for PV System
Abstract: Implementation of the solar system is nowadays very popular due to less availability and high cost of non renewable fuels. In this work, modelling of the solar panel along with Maximum Power Point Tracking (MPPT) is performed. MPPT is used to make the system more efficient. To gain this Perturb and Observe method is used to obtain the constant DC voltage at the maximum power. In this paper, constant DC …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 1–8 Read article
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Control of a Three Phase Grid-Connected Photovoltaic System with Maximum Power Point Tracking
Abstract: The power output of a photovoltaic system is greatly dependent on environmental conditions such as solar irradiation and ambient temperature. Due to the nonlinear nature of these conditions, the power output of the PV system is nonlinear. As a result, interfacing its output to the electrical grid is not possible. In order to achieve a grid connected photovoltaic (PV) system, controlled maximum power point tracking techniques are needed to obtain …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 52–64 Read article
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Bloom Box Powered Electrical Vehicle with Carbon Nanotubes Wound Motor Drive Train
Abstract: The electrical energy is the main concern to run of an electrical vehicle. This electrical energy isgenerally obtained from a bank of batteries. These batteries require lot of space, and they areheavier. These facts affect the performance and efficiency of an electrical vehicle. Bloom boxcan utilize both fossil (natural gas) and renewable (stream air) sources to produce electricity. Itsoperation is noiseless. It can supply higher energy although it is smaller …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 3, 2019 · pp. 31–42 Read article
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Design and Analysis of a Solar-Wind Hybrid System
Abstract: Renewable energy sources like wind and solar energies can be combined to increase the totalpower generation and thereby increase the efficiency of the system. The combination alsoprovides a means to overcome the intermittent nature of the solar and wind renewable energysources, since one source can be used for power generation when the other is not available.AC-DC converters are used to convert the alternating voltage of the wind generator to aconstant …
Published in Journal of Power Electronics and Power Systems · Vol. 10, Issue 1, 2020 · pp. 1–8 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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Operation of isolated DFIG with Modified P&O MPPT Algorithm
Abstract: AbstractThis paper demonstrates validation of modified control algorithm for MPPT (Maximum Power Point Tracking) for Doubly Fed Induction Generator (DFIG) based WECS (Wind Energy Conversion System). The main objective is maximizing the wind energy by optimizing the losses. MPPT algorithm implementation is done by performing control of duty cycle of DC to DC boost converter. This method establishes effective system for wind energy utilization and reduces rating for control. The …
Published in Journal of Semiconductor Devices and Circuits · Vol. 7, Issue 1, 2020 · pp. 29–33 Read article
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Smart Solar-based Inverter
Abstract: Unavoidable shortage of fossil fuel sources in the future, renewable types of energy have become important source of energy in this generation. This Research consists of the solar panel which use solar energy and is environmentally friendly. We have performed the movement of solar tracker system using Arduino and converting the solar energy into electrical energy and this energy is stored in the battery. The DC energy stored in battery …
Published in Journal of Semiconductor Devices and Circuits · Vol. 7, Issue 3, 2020 · pp. 14–18 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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Visible Light Communication System with Various OFDM Signaling Techniques for IM/DD Channels
Abstract: Lightening using light emitting diodes is very energy efficient method for illumination. This type of communication is known as visible light communication. Further, with the use of OFDM technique, multiuser communication is also possible in VLC. But the problem with OFDM is that it has both positive and negative amplitude, due to which it is not preferable for direct detection channels. For making it worthy for VLC in all manners, …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 3, 2016 · pp. 21–24 Read article
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Optimization of Transmission System by adopting 765/800KV Ultra High Voltage Network and its Technical Configurations
Abstract: In the era of persistent capacity shortages, ever increasing demand scenario, increased market operation and formation of National grid, new challenges have arisen in operation and control of large integrated and interconnected power system in India. The paper chronologies development of interconnected system in India from the state of independent utilities of 1950s to the well developed present interconnected National Grid. High voltage has been attractive proposition for large power …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 9, Issue 1, 2022 · pp. 31–42 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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Rectenna for Low Power Wireless Applications
Abstract: This paper presents a rectenna that is designed and simulated to power the wireless sensor systems at 3.12 GHz. The antenna substrate is designed with glass epoxy. The rectenna circuit has been simulated on the glass epoxy and RF-to-DC conversation is investigated for power level -5dBm. The presented antenna has the impedance bandwidth of 58.34%, i.e. from 2.61GHz to 4.76 GHz with a gain of 2.67dBi.Keywords: Rectenna, RF-to-DC, micro strip …
Published in Trends in Electrical Engineering · Vol. 8, Issue 1, 2018 · pp. 19–23 Read article