N. Demerdash

Publications28
h-index11
Citations531
Highly Influential Citations12
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Determination of Saturated Values of Rotating Machinery Incremental and Apparent Inductances by an Energy Perturbation Method
Energy and winding current perturbations form the basis of a method for calculation of the saturated apparent and incremental inductances of rotating machinery as functions of rotor position and… Expand
  • 121
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Three Dimensional Finite Element Vector Potential Formulation of Magnetic Fields in Electrical Apparatus
The three dimensional magnetic vector potential (m.v.p.) variational formulation for magnetostatic field problems, with ideal current carrying conductors is given. An appropriate functional was… Expand
  • 83
  • 3
Experimental Verification and Application of the Three Dimensional Finite Element Magnetic Vector Potential Method in Electrical Apparatus
The three dimensional magnetic field surrounding an 861 turn coil as well as that surrounding and within a single phase 1.5 kvA shell type transformer were calculated using the three dimensional… Expand
  • 31
  • 3
Magnetic Field Modeling of Permanent Magnet Type Electronically Operated Synchronous Machines Using Finite Elements
The finite element method is applied to the analysis of electronically operated permanent magnet type synchronous machines. In this class of machines, the armature MMF is a discretely forward… Expand
  • 64
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Automatic Formulation of Models for Simulation of the Dynamic Performance of Electronically Commutated DC Machines
This paper presents a numerical analysis model by which one can analyze and predict the sustained steady state dynamic performance of electronically commutated dc machines of the stationary and… Expand
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A combined finite element-state space modeling environment for induction motors in the ABC frame of reference : the no-load condition. Discussion
TLDR
This paper centers on the development of a modeling environment to predict performance and operating characteristics of squirrel cage induction motors. Expand
  • 55
Comprehensive salient-pole synchronous machine parametric design analysis using time-step finite element-state space modeling techniques
This paper details the application of a time-stepping coupled finite element-state space (CFE-SS) model to predict a salient-pole synchronous generator's parameters and performance, including damper… Expand
  • 24
An Evaluation of the Methods of Finite Elements and Finite Differences in the Solution of Nonlinear Electromagnetic Fields in Electrical Machines
In this paper, an evaluation of the methods of finite elements and finite differences, as applied to nonlinear magnetic field problems in electrical machines, is presented. The evaluation covers the… Expand
  • 43
Saturated Transformer Inductances Determined By Energy Perturbation Techniques
The effect of perturbation of currents of multi-winding transformers, on the stored magnetic energy in the magnetic field associated with these apparatus is used to calculate the saturated… Expand
  • 14
Dynamic modeling of brushless DC motor-power conditioner unit for electromechanical actuator application
A comprehensive digital model for the analysis of the dynamic-instantaneous performance of a power conditioner fed samarium-cobalt permanent magnet brushless DC motor is presented. The particular… Expand
  • 21