The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Khwaja M Rahman - One of the best experts on this subject based on the ideXlab platform.
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thermal analysis of multibarrier interior pm synchronous machine using Lumped Parameter model
IEEE Transactions on Energy Conversion, 2004Co-Authors: A M Elrefaie, N C Harris, T M Jahns, Khwaja M RahmanAbstract:This paper presents a Lumped-Parameter thermal model for a multi-barrier interior PM synchronous machine. The model consists of a network of 12 thermal resistances that make it possible to estimate temperatures at 9 critical points inside the machine including the stator end windings, rotor magnets, and the bearings. The details of the model are presented and two machines are analyzed, including a 6 kW 12-pole automotive starter/alternator and a 0.5 kW 4-pole electric water pump machine. The Lumped-Parameter model results for both machines demonstrate good agreement with results obtained using detailed thermal finite element analysis.
A M Elrefaie - One of the best experts on this subject based on the ideXlab platform.
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thermal analysis of multibarrier interior pm synchronous machine using Lumped Parameter model
IEEE Transactions on Energy Conversion, 2004Co-Authors: A M Elrefaie, N C Harris, T M Jahns, Khwaja M RahmanAbstract:This paper presents a Lumped-Parameter thermal model for a multi-barrier interior PM synchronous machine. The model consists of a network of 12 thermal resistances that make it possible to estimate temperatures at 9 critical points inside the machine including the stator end windings, rotor magnets, and the bearings. The details of the model are presented and two machines are analyzed, including a 6 kW 12-pole automotive starter/alternator and a 0.5 kW 4-pole electric water pump machine. The Lumped-Parameter model results for both machines demonstrate good agreement with results obtained using detailed thermal finite element analysis.
T M Jahns - One of the best experts on this subject based on the ideXlab platform.
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thermal analysis of multibarrier interior pm synchronous machine using Lumped Parameter model
IEEE Transactions on Energy Conversion, 2004Co-Authors: A M Elrefaie, N C Harris, T M Jahns, Khwaja M RahmanAbstract:This paper presents a Lumped-Parameter thermal model for a multi-barrier interior PM synchronous machine. The model consists of a network of 12 thermal resistances that make it possible to estimate temperatures at 9 critical points inside the machine including the stator end windings, rotor magnets, and the bearings. The details of the model are presented and two machines are analyzed, including a 6 kW 12-pole automotive starter/alternator and a 0.5 kW 4-pole electric water pump machine. The Lumped-Parameter model results for both machines demonstrate good agreement with results obtained using detailed thermal finite element analysis.
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a saturating Lumped Parameter model for an interior pm synchronous machine
International Electric Machines and Drives Conference, 1999Co-Authors: E C Lovelace, T M Jahns, Jeffrey H LangAbstract:This paper presents a Lumped Parameter magnetic model for an interior permanent magnet (IPM) synchronous machine. The model accounts for the effects of saturation through a nonlinear reluctance element network used to estimate the q-axis inductance. The magnetic model is used to calculate inductance and torque in the presence of saturation. Furthermore these calculations are compared to those from finite element analysis with good agreement.
H Toki - One of the best experts on this subject based on the ideXlab platform.
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theoretical study of Lumped Parameter circuits and multiconductor transmission lines for time domain analysis of electromagnetic noise
Scientific Reports, 2019Co-Authors: Masayuki Abe, H TokiAbstract:In order to find the origins of electromagnetic noise in the time domain, we formulate a system of Lumped Parameter circuits and multiconductor transmission lines (MTL). We present a discretized approach to treat any Lumped Parameter circuits and MTL systems, and the boundary conditions between these systems, where the Lumped Parameter circuits are described by coupled differential equations, and the MTL systems by coupled partial-differential equations. The introduction of the time-domain impedance and the element matrices enables us to perform a time-domain analysis that includes dependent sources and the coupling devices in the framework of the circuit theory. For three-line systems, we are able to calculate the coupling of the normal, common, and antenna modes, and to find out methods to reduce the noise.
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multiconductor transmission line theory that includes an antenna process with a Lumped Parameter circuit
Journal of the Physical Society of Japan, 2016Co-Authors: H Toki, Masayuki AbeAbstract:Electromagnetic noise was studied theoretically by developing a multiconductor transmission-line (MTL) theory derived from Maxwell’s equations without any approximations. The MTL theory naturally contains the antenna process, and for the case of three lines it is written in terms of normal, common, and antenna modes. Here we develop a theoretical method to solve the MTL equations by introducing boundary conditions consisting of a Lumped-Parameter circuit in order to describe the performance of any electric circuit for good performance without noise. The finite-difference time-domain (FDTD) method is a powerful algorithm to solve time-dependent coupled differential equations for a combined distributed- and Lumped-Parameter circuit.
N C Harris - One of the best experts on this subject based on the ideXlab platform.
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thermal analysis of multibarrier interior pm synchronous machine using Lumped Parameter model
IEEE Transactions on Energy Conversion, 2004Co-Authors: A M Elrefaie, N C Harris, T M Jahns, Khwaja M RahmanAbstract:This paper presents a Lumped-Parameter thermal model for a multi-barrier interior PM synchronous machine. The model consists of a network of 12 thermal resistances that make it possible to estimate temperatures at 9 critical points inside the machine including the stator end windings, rotor magnets, and the bearings. The details of the model are presented and two machines are analyzed, including a 6 kW 12-pole automotive starter/alternator and a 0.5 kW 4-pole electric water pump machine. The Lumped-Parameter model results for both machines demonstrate good agreement with results obtained using detailed thermal finite element analysis.
