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This study investigates the dynamic characteristics of synchronous reluctance motor (SynRM), with segmental rotor structure, using finite element method in which the moving mesh technique is considered. The focus of this paper is the sensorless vector control parameters estimation of SynRM under saturation and iron loss. Extensive experimental work has been conducted to verify the accuracy of proposed...
Driven by customer's demand, small sized mobile phones are realized due to latest development in electronics. For acoustic parts such as microspeakers and dynamic receivers, however, size reduction is relatively difficult due to their mechanical characteristics. An integrated device (microspeaker and dynamic receiver within one structure) has been developed to realize efficient size reduction. In...
In the past years extensive efforts have been directed towards the development of shape optimization methodologies for electromagnetic devices. In cases when nonlinear magnetic behavior is expected to affect performance, the optimization process becomes more complicated and has to be closely coupled with field computation techniques capable of handling this non-linearity. Common examples involved...
This paper presents a new semi-analytical method for computational electromagnetics. Today, the usual electromagnetic field simulation codes are mainly based on the finite element method (FEM). FEM uses the piecewise low order polynomials to approximate different kind of solution functions. The particular nature of a given problem is not considered, which greatly enhances the method's applicability...
This paper presents finite element method (FEM) frequency domain results for electromagnetic radiation emitted from high power microelectronic circuits connected to a heat sink. The heat sink model associated with one of the IEEE EMC challenging problems has been used to investigate three different grounding configurations. A new simulation model for the Intel P4 CPU heat sink is proposed and analyzed...
The present work is on the use of finite element method (FEM) for numerical modelling of an induction heating system for thermal treatment of long cylindrical steel bar. In the design and optimization of these type of process interesting quantities like the temperature field and power induced by eddy currents are of particular interest. Specially interesting is the effect of changing the current frequency.
This paper presents the method for calculating the differential inductances of a tubular linear permanent magnet (PM) actuator as a function of armature or mover position by the finite element (FE) method. The magnetic saliencies due to both the machine structure and magnetic saturation and the end effects are included in the inductance profile.
Some considerations on 8/6 switched reluctance (SR) generator excited by a suppression resister converter (SRC) is presented. Finite element method is used to calculate the symbols at the dc excitation voltage VDC=30 V. It was found that there is good agreement between the calculated and experimental results.
A stator doubly fed doubly salient permanent magnet (SDF-DSPM) machine is proposed for automotive integrated starter generator (ISG) systems. Finite element method is used to calculate the electromagnetic torque and induced EMF to analyze the functionality of the proposed SDF-DSPM machine.
This paper deals with the optimum rotor design solution on torque ripple reduction for a SynRM with concentrated winding using response surface methodology(RSM). The RSM has been achieved to use the experimental design method in combination with finite element method and well adapted to make analytical model for a complex problem considering a lot of interaction of design variables. Comparisons are...
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