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A new method of the prediction of the electromagnetic compatibility of power system is introduced, and a new analysis software is achieved. Compared with the measured results, it is proved that electromagnetic transient simulation is reliable and effective, and it is high practical for researching and analyzing the substation electromagnetic compatibility. It also introduces the Gray prediction theory...
The paper deals with the evaluation of line-start interior permanent magnet synchronous motor (LSIPMSM) model parameters using finite elements. A lumped parameter dynamic model with current-dependant variable parameters is used in LSIPMSM dynamic performance evaluation. By a dynamic model determined run-up responses under different supply and load conditions were confirmed experimentally in the case...
The paper presents a specific simulation model for the analysis of linear electrical machines with skewed mounted permanent magnets. Modelling implementation is based on a hybrid numerical technique incorporating standard finite elements combined with analytical solution of Laplace equation in the air gap area. The proposed model enables the simulation of generator's overall performance under various...
This paper investigates the scalability of a parallel fast multipole accelerated boundary integral equation method in electrostatic field analyses. A load balancing technique suitable for highly parallel computation with 100 or more processes is also proposed. Numerical results clarify the effectiveness of the developed method in practical models with complicated geometry.
Hybrid electrical vehicles (HEV), which combine the drive power of an internal combustion engine and that of one or several electrical machines (EM), are finding, due to an increasing ecological awareness, a better market acceptance nowadays. Due to the limited space available in drive trains, PM-motors, which offer high power densities, are prime candidates for such applications. This paper presents...
Summary form of only given: For the dynamic analysis of Linear Induction Motor (LIM), the derivation of its equivalent circuit parameters are essential, so this paper applies those parameters derived by electro-magnetic field theory. In case of LIM, the value of parameters is different according to its secondary structure, the application of electro-magnetic field theory is not avoidable. Using those...
The Genetic Algorithm (GA) is suggested to be combined with the Adaptive Frequency Sampling (AFS) technique to find the decoupling capacitors for suppressing the resonances of the large power/ground plane (PGP)s. In more detail, the AFS is used to characterize each of the divided regions of the PGPs and compound of the AFS results are used to evaluate the fitness or cost function in each GA iterative...
This paper deal with the efficiency evaluations in a Synchronous reluctance motor (SynRM) Vs. PMASynRM using a coupled transient finite element method (FEM) and Preisach modeling, which is presented to analyze the characteristics under the effect of saturation and hysteresis loss. The focus of this paper is the efficiency evaluation relative to hysteresis loss, copper loss, etc. On the basis of load...
According to the nonlinear magnetization characteristics of transformer core, the 3D physical model and circuit model of the double-core column single-phase transformer are built by using the field-circuit coupling method in this paper. Exciting current is simulated and analyzed under different DC bias. The simulation results demonstrate that the exciting current becomes much more distort and will...
This paper investigates the iron loss and torque characteristics of inverter-fed spoke type interior permanent magnet synchronous motor (IPMSM) optimized for sinusoidal distributed back-EMF. First of all, an optimal design procedure is introduced to effectively optimize the rotor pole surface to reduce the distortion of back-EMF in the spoke type IPMSM. Then, the finite element method (FEM) results...
This paper presents a dynamic simulation model which fully describes transient and steady-state operation of flux reversal linear synchronous motor. Magnetic field computation by finite element analysis considering inter-phase coupling effect is performed which leads to phase-independent voltage equation in the dynamic simulation. Motor parameters are obtained by magnetic field computation and put...
This paper proposes a frequency dependent model for armored power cables using FE method. The model parameters are obtained by conducting a series of studies using coupled circuit-field analysis. The frequency response of the cable was obtained by coupling the cable FE domain model and external electric circuits. This frequency response was then fitted with rational function approximation. The resulting...
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