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ABSTRACT: This paper deals with optimum design criteria to minimize torque ripple of concentrated winding synchronous reluctance motor (SynRM) using response surface methodology (RSM). The feasibility of using RSM with the finite element method (FEM) in practical engineering problem is investigated with computational examples and comparison between the fitted response and the results obtained from an analytical solution according to the design variables of stator and rotor in concentrated winding SynRM (6slot).
Electric Machines & Drives Conference, 2007. IEMDC '07. IEEE International; 06/2007
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ABSTRACT: This paper deals with the PM performance evaluations in a variable flux memory motor (VFMM) using a coupled finite element method (FEM) and Preisach modeling, which is presented to analyze the magnetic characteristics of permanent magnets. The focus of this paper is the operation characteristics evaluation relative to magnetizing direction and quantity of permanent magnets on re-, demagnetization condition in a variable flux memory motor(VFMM).
Electric Machines & Drives Conference, 2007. IEMDC '07. IEEE International; 06/2007
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ABSTRACT: This paper deals with an automatic rotor design functional standard computation based on torque/volume for a synchronous reluctance motor (SynRM). The focus of this paper is the design relative to the torque/volume on the basis of each rated watt according to the rotor diameters of a SynRM. The coupled finite elements analysis (FEA) & sequential unconstrained minimization technique (SUMT) have been used to evaluate design solutions. The proposed procedure allows to define the rotor geometric design function according to the rotor diameter and rated watt starting from an existing motor or a preliminary design.
Electric Machines & Drives Conference, 2007. IEMDC '07. IEEE International; 06/2007
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ABSTRACT: It is necessary to modify the state-of-the-art of speed control theory because of the phase asymmetry in the linear induction motor (LIM) and for the constant speed control of mover using single vector control inverter system, it is important that primary stack is located in appropriated intervals in the 3D conveyer system using LIM. The dynamic characteristic analysis method of the vector controlled LIM using coupled FEM and control algorithm taking into account the movement is proposed. The focus of this paper is the analysis relative to selecting primary stack intervals in order to constant speed control in the 3D conveyer system using LIM.
Electric Machines & Drives Conference, 2007. IEMDC '07. IEEE International; 06/2007
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ABSTRACT: This paper is presented for evaluating the static and dynamic
performance of slotless permanent magnet linear synchronous motor
(PMLSM) which is energized by partially excited primary current.
Especially, the influence of the end-effect resulting from the moving
magnet is investigated in detail. The starting and control
characteristics related to the end-effect of PMLSM are studied
IEEE Transactions on Magnetics 10/2001; · 1.36 Impact Factor
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ABSTRACT: This paper is presented for evaluating the dynamic of permanent
magnet linear synchronous performances motor (PMLSM) which is energized
by partially excited primary current. Especially, the influence of the
end-effect resulting from the moving magnet is considered in detail. The
starting and control characteristics related to the capability in PMLSM
driving are investigated successively
Electric Machines and Drives Conference, 2001. IEMDC 2001. IEEE International; 02/2001
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ABSTRACT: This paper presents a new technique for the optimal design of the
surface permanent magnet synchronous motor (SPMSM) considering the
parameter correction of synchronous reactance. The parameter correction
for the design of SPMSM is performed by using the finite element method
(FEM). The armature resistance and the residual flux density of rotor
magnet are corrected through the thermal analysis. The advanced immune
algorithm (AIA) is used in the optimization procedure
IEEE Transactions on Energy Conversion 10/1999; · 2.27 Impact Factor
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ABSTRACT: Multisolution optimization technique employing immune algorithm
(IA) searches diverse solutions at one optimal design procedure. By
applying the technique to the optimizations of sinc function and PMLSM
design, its usefulness is proved. The design procedure for PMLSM is
verified by comparing test and analysis results of PMLSM, which is
manufactured practically
Electric Machines and Drives, 1999. International Conference IEMD '99; 06/1999
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ABSTRACT: Usefulness of heuristic algorithms as the search method for
diverse optimization problems is examined. Immune algorithm (IA),
genetic algorithm (GA) and evolution strategy (ES) are used to search
the optimal value for some numerical functions. Then those results are
compared each other. It is shown that IA is more useful for most of
problems. Especially the structure and characteristic of immune
algorithm (IA) are inspected in detail. Finally a surface permanent
magnet synchronous motor (SPMSM) is designed by using the algorithms
IEEE Transactions on Magnetics 10/1998; · 1.36 Impact Factor
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ABSTRACT: This paper presents a new technique for the optimal design of surface permanent magnet synchronous motors (SPMSM) considering the parameter correction of synchronous reactance. The parameter correction for the design of SPMSM is performed by using the finite element method (FEM). The immune algorithm (IA) is used in the optimization procedure
Electric Machines and Drives Conference Record, 1997. IEEE International; 06/1997
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ABSTRACT: This paper describes an implementation of the static magnetic
hysteresis using the finite element method and a vector hysteresis
model. The vector hysteresis model which is extended from the
magnetization-dependent Preisach model is adopted. The magnetization of
each element is calculated for a given history of the rotating field.
The lagging angle of the magnetization for the applied field is
evaluated. It is shown that the magnetization characteristics of the
magnetic materials under the rotating field can be explained
IEEE Transactions on Magnetics 04/1997; · 1.36 Impact Factor
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ABSTRACT: A new method employing the immune algorithm (IA) as the search
method for the shape optimization of an electromagnetic device is
presented. The method is applied to the shape optimization of a pole
face of an electromagnet. For the magnetic field analysis the finite
element method is used. It is shown that the proposed method with the IA
is very useful for the shape optimization of electromagnetic devices
IEEE Transactions on Magnetics 04/1997; · 1.36 Impact Factor
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ABSTRACT: This paper presents an optimal design method to maximize the
efficiency of the interior permanent magnet synchronous motor. To do
this, the efficiency of the motor is taken as the objective function,
and the genetic algorithm is used as the optimization algorithm to find
the optimal design variables of the objective function. To make a more
accurate prediction of performance possible, the air gap flux density
and d, q axis inductances obtained by an analytical method are
compensated by using the results from FEM studies
IEEE Transactions on Magnetics 04/1997; · 1.36 Impact Factor
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ABSTRACT: The analysis of a permanent magnet-type AC servo motor with both a
closed slot and a ring shape magnet is performed by using the finite
element method (FEM). The saturation of the bridge-part connecting two
slot teeth is considered for nonlinear analysis. The optimal design of
the stator is presented for minimizing cogging torque. The torques, i.e.
cogging and rated torques, are expressed in terms of vector potential
computed by directly applying the Maxwell stress tensor formula. The
minimization of cogging torque of sample model is achieved by using the
(1+1) evolution strategy (ES) and the rated torque must be more than the
specific value
IEEE Transactions on Magnetics 04/1997; · 1.36 Impact Factor
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ABSTRACT: This paper deals with an anisotropy rotor design of synchronous reluctance motor (SynRM) using a coupled FEM & Preisach model. The focus of this paper is the design relative to the output power on the basis of rotor materials of a SynRM. The coupled finite elements analysis (FEA) & Preisach model have been used to evaluate nonlinear solutions. Computer simulation and experimental result for the efficiency using dynamometer show the propriety of the proposed method
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on; 02/2001
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ABSTRACT: 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 analysis method
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on;
