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7 articles for “rotor dynamics”
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Dynamic Analysis of a Multi-geared Rotor Shaft System
Abstract: Gear systems are the toothed members in which the main aim is to transmit power or motion between two shafts by meshing without any slip. Motion and power transmitted between the shafts are kinematically equivalent to power or motion transmitted between frictional wheels. Vibration of gear system causes unwanted noise such as gear whirling. Noise and vibration signals from machine can contain vital information about the internal processes and provide …
Published in International Journal of Mechanics and Design · Vol. 4, Issue 2, 2018 · pp. 15–20 Read article
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Simulating Controlled Reluctance Motor
Abstract: The objective of the study is to control an ultra-high speed switched reluctance motor generator. Ansys simulation process is used here to achieve sensor less control over the entire speed range. Different rated speeds are applied, and inductance profiles are found. A full speed range sensor less closed-loop control system is implemented using current gradient measurement. To obtain sensor less control over the entire speed range, the open-loop control and …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 5, Issue 2, 2019 · pp. 41–48 Read article
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Permanent and Electro-Magnetic Generator
Abstract: We know the process of power generation through windmill, thermal power plant in these power generation systems coal and water are the main power generation sources in our country and are non-renewable. In order to save resources which are available in nature solar and wind power generation systems were invented. In the same way, there is a great need to invent new methods to develop the power. So, here we …
Published in International Journal of Analog Integrated Circuits · Vol. 4, Issue 1, 2018 · pp. 10–12 Read article
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Investigation of Tangential Shear Stress and Frictional Torque Coefficient over a Rotating Disk of the Rotor-Stator System
Abstract: Abstract The study investigates the prediction of tangential shear stress and the frictional torque coefficient over a rotating disk in a rotor-stator system under laminar inward flow conditions. The interaction between the rotating and stationary disks is governed by key parameters, such as volumetric flow rate, rotational speed of the disk, and the axial clearance between the two surfaces. These parameters are expressed in terms of dimensionless quantities, including the …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 11, Issue 1, 2025 · pp. 6–14 Read article
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Review on Vibration Problems in Turbomachinery
Abstract: Vibration suppression of turbomachinery is an important engineering problem. Vibration caused by mass imbalance is a common problem in rotating the turbomachinery systems. Imbalance occurs if the principal axis of inertia of the rotor is not coincident with its geometric axis. Higher speeds cause much greater centrifugal imbalance forces, and the current trend of rotating equipment toward higher power density clearly leads to higher operational speeds. In this paper, a …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 1, Issue 2, 2015 · pp. 54–57 Read article
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Enhancement of Power Factor and Effective Performance of an Induction Motor Based Converter-Fed Rotor
Abstract: Abstract— Taking a novel concept of a rotor that is fed by a converter, this paper attempts to investigate an induction machine. In this the stator has been directly connected to the grid and it is also Y connected while the rotor windings are open-ended fed to a back-to-back converter with a floating capacitor. The factors that are carefully studied are the power factor and the efficiency improvements of the …
Published in International Journal of Polymer Science and Engineering · Vol. 4, Issue 1, 2018 · pp. 10–19 Read article
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Modelling and Analysis of Five Phase AC Motor in D-Q Axis
Abstract: Abstract: In this paper, a quinary phase induction machine is dynamically modelled in D-Q axis. The quinary phase voltages are being converted into two component voltages, one along the direct axis and the other along the quadrature axis. The Speed and torque of quinary phase induction is then derived. The speed of the quinary phase induction motor is estimated using sensor-less method thereby reducing rate and increasing the reliability of …
Published in International Journal of Distributed Computing and Technology · Vol. 5, Issue 2, 2019 · pp. 20–42 Read article