Prediction of high frequency characteristics of the windings of large electrical machines: a lumped-parameter reluctance-network analysis

1999 ◽  
Author(s):  
S.D. Garvey
Keyword(s):  
Network Analysis ◽  
High Frequency ◽  
Frequency Characteristics ◽  
Electrical Machines ◽  
Lumped Parameter ◽  
Reluctance Network

scholarly journals Development of a generic framework for lumped parameter modeling

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 365-373
Author(s):  
Shuo Yang ◽  
Yacine Amara ◽  
Wei Hua ◽  
Georges Barakat
Keyword(s):  
Permanent Magnet ◽  
Network Modeling ◽  
Electrical Machines ◽  
Software Implementation ◽  
Permanent Magnet Machines ◽  
Element Analysis ◽  
Modeling Methodology ◽  
Generic Framework ◽  
Lumped Parameter ◽  
Reluctance Network

AbstractThe purpose of this article is to present a generic reluctance network modeling tool dedicated to the modeling of electrical machines. This tool is used for the study of permanent magnet machines. The focus will be on the modeling methodology and software implementation. More precisely, the aspects related to genericity will be discussed. In order to validate the developed tool, the simulation of a 12 slot/10 pole flux-switching permanent magnet machine is conducted, and the results obtained from this generic framework are compared to the corresponding finite element analysis.

Nonlinear Modeling and Experimental Verification of a MDOF Hydraulic Engine Mount

2000 ◽  
Author(s):  
Aaron A. Geisberger ◽  
Amir Khajepour ◽  
M. Farid Golnaraghi
Keyword(s):  
High Frequency ◽  
Model Simulation ◽  
Nonlinear Modeling ◽  
Full Range ◽  
Frequency Characteristics ◽  
Model Parameters ◽  
Column System ◽  
Lumped Parameter ◽  
Engine Mount ◽  
Identification Techniques

Abstract This paper has made several contributions to hydraulic mount modeling. A continuous nonlinear decoupler model is developed to capture the amplitude dependent behavior of a typical hydraulic mount over low and high frequency ranges. The decoupler model also demonstrates decoupler resonance, which degrades high frequency characteristics of a generic hydraulic mount. In addition, this paper is the first to introduce a lumped parameter MDOF (Multi Degree Of Freedom) fluid column system that is shown to improve high frequency characteristics. Model parameters are identified by isolating components in an experimental test apparatus and applying system identification techniques. Model simulation results are validated with measured data over the full range of standard excitation conditions.

Analysis of High Frequency Characteristics for a Meander Line Slow-wave Structure

2020 ◽  
Author(s):  
Zheng Wen ◽  
Jirun Luo ◽  
Yu Fan ◽  
Chen Yang ◽  
Fang Zhu ◽  
...  
Keyword(s):  
Slow Wave ◽  
High Frequency ◽  
Wave Structure ◽  
Slow Wave Structure ◽  
Frequency Characteristics ◽  
Meander Line

Dynamic Stability of a Water Brake Dynamometer

1998 ◽  
Vol 120 (1) ◽  
pp. 89-96 ◽  
Author(s):  
R. A. Van den Braembussche ◽  
H. Malys
Keyword(s):  
High Frequency ◽  
Low Frequency ◽  
Lumped Parameter Model ◽  
Stable Operation ◽  
Pressure Oscillations ◽  
Lumped Parameter ◽  
Flow Oscillations ◽  
Brake Dynamometer ◽  
Low Torque ◽  
Frequency Variations

A lumped parameter model to predict the high frequency pressure oscillations observed in a water brake dynamometer is presented. It explains how the measured low frequency variations of the torque are a consequence of the variation in amplitude of the high frequency flow oscillations. Based on this model, geometrical modifications were defined, aiming to suppress the oscillations while maintaining mechanical integrity of the device. An experimental verification demonstrated the validity of the model and showed a very stable operation of the modified dynamometer even at very low torque.

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