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36 articles for “AC waveform”
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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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Analysis and Modeling of Acoustic Noise in the Switched Reluctance Motors with Finite Element Method
Abstract: Due to high importance of noise in switched reluctance motor (SRM), a coupled electromagnetic-structure simulation model is created for this motor using ANSYS finite element (FE) package. Since the main reason for producing noise and vibration in the SRM is the radial force applied to the stator pole, the radial force waveform is predicted using the 2D FE transient analysis in the developed electromagnetic model. Determination of the frequency modes …
Published in Trends in Electrical Engineering · Vol. 5, Issue 3, 2015 · pp. 17–22 Read article
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The Analysis of Bridge Rectifier Circuits using Mathematica
Abstract: This paper addresses the steady-state and transient analysis of bridge rectifiers. It starts withsuggesting an efficient representation of the diodes. A single equation that describes thediode’s performance in both the forward and reverse directions is presented. It implicitlytakes the voltage polarity into account. Without any loss of generality, the suggested method isapplied to the classical uncontrolled four-valve full-wave rectifier bridge configureuration.The effect of the load resistance and the eventual presence …
Published in Trends in Electrical Engineering · Vol. 10, Issue 1, 2020 · pp. 30–42 Read article
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Analysis and Implementation of Carrier Based and Space Vector PWM Techniques on a Three-Phase Voltage Source Inverter
Abstract: This paper presents a comprehensive analysis of carrier based and space vector pulse width modulation (PWM) techniques on a two-level three-phase voltage source inverter (VSI). The results of simulations performed in Matlab/Simulink are compared to the results obtained from the implementation of the PWM schemes on an actual VSI whose PWM signals are generated using dSpace. The analysis of the inverter line to line voltages includes, a fast fourier transform …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 125–139 Read article
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Time Domain Analysis in an On-chip High Speed RLCG Interconnection Network at 0.18 µm Technology
Abstract: In this model, the time domain waveform is evaluated for calculation of delay time, peak time, settling time, damping ratio and natural frequency for a second order RLCG interconnect network. It can also be used for multiple interconnect systems but for higher order systems it is ignored due to accurate analysis. The model is applied to a single resistance-inductance-capacitance-conductance model which can also be extended to multi-interconnect systems to analyze …
Published in Journal of VLSI Design Tools and Technology · Vol. 1, Issue 1-2-3, 2011 · pp. 57–67 Read article
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A High-Efficiency Fuzzy-Logic-Controlled Wireless Charger Enabling the Safe Integration of Electronics in Carbon Fiber Reinforced Polymer E-Bikes
Abstract: The integration of advanced electronics into structures made from carbon fiber reinforced polymers (CFRP) presents significant challenges, including thermal management constraints, electromagnetic interference (EMI), and the imperative for lightweight components. This study addresses these challenges by designing and validating a fuzzy logic-based wireless charging system specifically engineered for lightweight E-Bikes employing CFRP frames. The system mitigates thermal risks associated with the low thermal conductivity of polymer composites by implementing a …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 1159–1172 Read article
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Analysis of Six-Pulse Bridge Circuits Including Zener and Semiconductor Diodes – Part Two
Abstract: The present study offers a generic method for simulating and modelling six-pulse rectifier bridge circuits in the time domain. These circuits can include Zener and/or semi-conductor type diodes or even a mixture of them. The governing system of simultaneous algebraic and differential equations are listed and solved numerically using a computer code written in Mathematica. The flexibly written program can handle voltage sources of any time waveform, frequency or internal …
Published in Journal of VLSI Design Tools and Technology · Vol. 12, Issue 2, 2022 · pp. 13–21 Read article
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Improved Unified Power Quality Conditioner Design and Numerical Simulation for Power Quality Improvement
Abstract: Harmonic currents can distort the waveform voltage, resulting in a weak signal. There is also an increase in the number of loads requiring enough sinus tension to function properly. As electronic devices become more power-sensitive, people are becoming increasingly interested in power conditioning solutions. Therefore, if the amount of electricity being generated falls below a certain threshold, some type of compensation must be provided. Unified Power Quality Controller (UPQC) is …
Published in Journal of Microwave Engineering and Technologies Read article
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Improved Unified Power Quality Conditioner Design and Numerical Simulation For Power Quality Improvement
Abstract: Harmonic currents can distort the waveform voltage, resulting in a weak signal. There is also an increase in the number of loads requiring enough sinus tension to function properly. As electronic devices become more power-sensitive, people are becoming increasingly interested in power conditioning solutions. Therefore, if the amount of electricity being generated falls below a certain threshold, some type of compensation must be provided. Unified Power Quality Controller (UPQC) is …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 3, 2021 · pp. 52–60 Read article
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Analysis of Low Bit Rate Audio Compression System using Linear Predictive Coding
Abstract: Abstract The point of the task is to build up a framework for encoding great quality discourse at a low bit rate. To execute this, we have utilized the most dominant discourse investigation system called Linear Predictive Coding (LPC). It utilizes tenth request Levinson-Durbin Recursion calculation to achieve the errand. It gives amazingly exact evaluations of discourse parameters and is moderately effective for computation. The discourse flag of guys and …
Published in Current Trends in Signal Processing · Vol. 9, Issue 1, 2019 · pp. 1–6 Read article
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Clinical Utility of Electroglottography and Videostroboscopy: A Correlational Study
Abstract: Voice serves as a unique identity of an individual which is derived from laryngeal features. Any deviance in the voice quality is considered abnormal and thus seeks clinical attention. Speech-Language Pathologist (SLP) plays an important role in the assessment and diagnosis of voice-related disorders. Although perceptual evaluation is a gold standard, objective methods augment the accuracy of the diagnosis of voice disorders. Electroglottography (EGG) is one such commonly used non-invasive …
Published in Research and Reviews: A Journal of Health Professions · Vol. 9, Issue 3, 2019 · pp. 1–10 Read article
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Improvement of Power Quality & Voltage Profile Through the Optimal Placement of Artificial Intelligence based UPFC Controller
Abstract: Amidst the array of FACTS controllers, the Unified Power Flow Controller (UPFC) stands out as a distinguished member, renowned for its array of beneficial features. Recognized as among the most advanced FACTS devices, the UPFC excels in facilitating simultaneous control overactive and reactive power flow as well as voltage magnitude. FACTS devices are instrumental in managing power flow, enhancing transmission capacity, and optimizing power system stability. Increasing the capacity of …
Published in Journal of Instrumentation Technology & Innovations · Vol. 13, Issue 3, 2023 · pp. 18–26 Read article
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Analysis and Comparison of Space Vector and Sinusoidal PWM Controlled Two Level Inverter Fed 3- Induction Motor
Abstract: The current generation of variable speed drives is typically based around the real-time digital generation of Pulse-Width Modulated (PWM) waveforms using either microprocessors or application-specific integrated circuits in many ways. PWM generation techniques for getting the control of inverters have the major advantages that component drift and tolerance problems associated with earlier analog implementations. Of all the various PWM techniques Sinusoidal and Space vector PWM techniques are more prominent. The …
Published in Trends in Electrical Engineering · Vol. 3, Issue 1, 2013 · pp. 1–11 Read article
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Reduce Harmonic Distortion using Pseudorandom PWM Technique
Abstract: Due to harmonic content in the voltage and current wave forms in the power electronic devices working at high frequencies cause mechanical vibrations, acoustic noise, and EMI interference makes the workers uncomfortable. Proposed work deals with a new and effective technique to possess low acoustic noise and mechanical vibration when lower switching frequency is chosen. Pseudo random pulse width modulation the new established technique is used to eliminate this undesirable …
Published in Journal of Microcontroller Engineering and Applications · Vol. 3, Issue 2, 2016 · pp. 8–13 Read article
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Low-Power Design of Content Addressable Memory using Master Slave Match Line Architecture
Abstract: Content Addressable Memory (CAM) is a storage unit used for faster accessing of lookup table that reduces processing time for search operation. It is mainly used very-high-speed searching applications like computer networking devices. The MAC address table is implemented with a CAM so that the destination port can be easily detected by reducing the switch’s latency. CAM gets its high speed of operation by parallel search mechanism. This paper proposes …
Published in Journal of VLSI Design Tools and Technology · Vol. 7, Issue 1, 2017 · pp. 29–34 Read article
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Modelling of Skin Effect in On-Chip VLSI RLC Global Interconnect
Abstract: This paper addresses one of the aspects of the high frequency effects, namely the skin effect. The basicproblem with skin effect is that it attenuates the high frequency components of a signal more than that ofthe low frequency components. Due to the increase in operating frequency and die sizes, RC models arebecoming insufficient for analysis of global VLSI interconnects. Accurate noise modelling for RLC lines isthus critical for timing and …
Published in Journal of VLSI Design Tools and Technology · Vol. 1, Issue 1-2-3, 2011 · pp. 31–44 Read article