Global ETD Search
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Showing 1 to 16 of 16 for “"Non-linear loads"”.
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Simulation of voltage source converter based shunt active filter in EMTP‐RV
… in power quality due to the increase in non linear loads has sparked a new interest in the filtering techniques used in transmission and distribution systems. Unlike passive filters, active filters are adaptable to rapidly changing source impedance and provide the necessary harmonic …
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Design and development of intelligent computational techniques for power quality data monitoring and management
… In Electrical Power Distribution System (EPDS), non-linear loads are the main cause of power quality (PQ) degradation. The PQ problems generated by these non-linear loads are complex and diversified in nature. The power system which is not capable to handle non-linear loads faces the problem of …
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Control Strategies for High Power Four-Leg Voltage Source Inverters
… power systems. No-load, unbalanced loading, and non-linear loading each have unique characteristics that negatively influence the performance of the Voltage Source Inverter (VSI). Ideal, infinitely stiff power systems are uninfluenced by loading conditions; however, realistic systems, with finite …
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Study of work flow in piezoelectrically driven linear and non-linear systems
… This general derivation is for fully coupled, non-linear systems working against a generalized load. Three example cases are then shown to demonstrate several key aspects of the general derivation. The first example case is a one-dimensional, linear discrete actuator working against a …
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Detection and Classification of Disturbances in Islanded Micro-grid
… classify multiple disturbances, especially when non-linear loads are involved. The presence of non-linear loads in islanded micro-grids, increases the fluctuations of the WT coefficients, thus making the disturbance signals to be buried. To overcome this issue, the Renyi entropy is used to …
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Control of Harmonics in 6-Pulse Rectifiers
… rapid advancement of power electronics, i.e. non linear loads, the use of the variable speed drives are increasing day by day. Harmonics produced by non-linear loads are a potential risk if they are not evaluated, predicted, and controlled.</p> <p>The power electronic switching devices like …
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Toward a full aircraft model platform for fuel slosh-structure interaction simulations
… a full aircraft model (FAM) for the purpose of non-linear loads calculation of an aircraft. The FAM is employed during the design process of an aircraft and comprises of various reduced-order models (ROMs). These are mainly structural, slosh and aerodynamic loads. This study focused on the …
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Development of one cycle current controller using raspberry Pi for 3 phase active power filter for nonlinear load improvement
… systems are faces more challenging problems of nonlinear load form commercial building and domestic use. The problem occurs when every single electronic appliances or electronic power supply used rectifier as a new conversion technologies such as Switch Mode Power Supply (SMPS) and it can be …
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Poisson Distribution based algorithm to reduce grid harmonics caused by EV chargers
… harmonics caused by EVs which are essentially non-linear loads. The proposed algorithm helps reduce grid harmonics by phase-shifting the carrier waves of each charging bay within a charging station. When the carrier waves are phase-shifted, the switching transients are distributed over time and …
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Modeling and Control of a Six-Switch Single-Phase Inverter
… model of the six-switch single-phase inverter. A non-linear time invariant model is constructed for circuit simulation; details found in real circuits are added. A hardware-in-the-loop (HIL) configuration is used for more accurate simulation. In fact, its use makes for an almost seamless …
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Frequency and time domain analysis of carbon nanotubes with realistic shape and distribution
… of the junction, leading in some cases to a nonlinear conductivity. The electromagnetic scattering characteristics of these nonlinear CNT structures need to be quantified to predict their response to incident electromagnetic radiation. Time-domain electromagnetic codes facilitate the analysis …
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DSP centered modular building blocks and object-oriented modeling for power electronic systems
… being. Coupled to this is a widespread use of non-linear loads that has given rise to new issues such as power quality and voltage stability. In this context, a flexible approach to the understanding of power electronic systems is needed that can be used both for design and education with a …
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Development of a power conditioner for a PMSG-based wind energy system integrated into a weak grid
With the growing use of non-linear loads and due to their ever changing nature, electricity networks experience power imbalance continually. These non-linear asymmetrical loads draw distorted unbalanced currents and voltages at the point of common coupling (PCC) which propagate into the …
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Methods for Parameter Estimation with Devices in Microgrids
… infer such parameters, or safety concerns. Using non-invasive measurements, this work seeks to estimate these parameter values in devices which may exist within a low voltage microgrid. Constant power loads, diesel gensets, and solar inverters can all be found in low voltage microgrids. This …
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Evaluation and mitigation of the undesired effect of DC bias on inverter power transformer
… been used mostly in standalone systems (non-grid connected), Uninterruptible Power Supplies (UPS) and, more recently, in distributed generated systems (DGs). DG systems are based on grid connected inverters and are increasingly being connected to utility grids to convert renewable energy …