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This paper presents a transient simulation model for permanent magnet synchronous machines (PMSM) under consideration of spatial harmonics produced from the stator winding. In addition, numerical identification methods for determining the necessary equivalent circuit element parameters are given. Simulation results are presented based on a test machine.
This paper compares the transient response of a finite element salient pole synchronous generator model connected to an infinite network bus to that of a system model based on an equivalent circuit representation of the machine. The characteristics and operating conditions of the two models are made equal as far as possible by thoroughgoing initiation and by using the finite element model for estimation...
Flux-switching machines are attracting interest among researchers over the last decade due to the increased importance of energy efficient systems. Among this class of machines, the rotary flux-switching PM machines (FSPM) with high power density are mostly analyzed by magnetic equivalent circuit (MEC) and finite element methods (FEM). In addition to those analysis techniques, this paper introduces...
This paper deals with the resistive losses in the deep-bar induction motor fed by a PWM inverter. The effect of harmonics from the inverter on the resistive losses of the induction motor is investigated by varying the amplitude or phase of the harmonics. The investigation is performed on 45 kW and 1250 kW induction motors. The equivalent circuit of the deep-bar induction motor is presented and used...
Rolling rotor switched reluctance motors (RRSRM) are known as exceptional drive systems. Their fundamental operation is characterized by the coupling of electrical, magnetic and mechanical components and the especial operating mode. The rotor is moved eccentrically in the stator. Due to this property an investigation with conventional mode of description is possible only on limited scale. Therefore,...
The ultrasonic motor (USM) is a popular actuator and used in industry and academic research in the last decades because it has the advantages of high holding torque, good response characteristics, high torque density, silent operation, free of electromagnetic noise and compact size. However, the motor are time-varying and highly nonlinear system which the parameters varied with increasing temperature...
This paper presents a 2-D nonlinear time-harmonic finite element model of induction motor for use in the accurate dynamic simulation. In the proposed model, it is not necessary to rotate the rotor, the resistivity of the rotor material is modified in terms of the specified load condition. The nonlinear properties are represented by using the effective magnetization curve. The field-coupled circuit...
This study aims to estimate equivalent circuit parameters for a synchronous machine. The need for equivalent circuits rises from practical applications. Accurate models are needed for control design and power system analysis. The research was conducted using the 2D finite element analysis and the differential evolution algorithm. As an input to the synchronous machine, a pulse is used within the FEA...
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