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Lately, a new diagnostic mean has been introduced for reliable fault diagnosis in delta-connected induction motors. This diagnostic mean is the zero-sequence current frequency spectrum. It will be shown in this paper that, the zero-sequence current waveform can be reliably used for identifying the induction motor's iron core saturation level. So in this work, simulations with the Finite Element Method...
Using ANSYS finite element package, an electromagnetic simulation model is developed for switched reluctance generator (SRG) in which dynamic characteristics are predicted precisely with finite element method (FEM). Carrying out 2D finite element (FE) transient analysis, instantaneous phase current and stator pole flux waveform are predicted when magnetic saturation is considered in the analysis....
This paper presents an improved dynamic model with incorporating the saturation effects for an induction motor (IM). The improved model is simulated with MAT-LAB/SIMULINK software for transient response in terms of electromagnetic torque, rotor speed and stator current at no-load and on-load. The obtained simulated results provide a clear evidence that the conventional unsaturated model fails to predict...
Ocean currents offer a green, renewable, and sustainable energy resource which can provide grid-scale power and acceptable capacity factors. Technology to harness these currents is still immature and not well understood. Of major concern are the construction, reliability, and performance of rotors fitted to turbines. The efforts of the collaborative partnership described in this paper are focused...
High-speed permanent magnetic generator (HSPMG) is common and important power production equipment in distributed generation systems. According to the structure characteristics of a 100kW level HSPMG, the mathematical model and physical models for its two-dimensional electromagnetic and thermal analyses are established, and the electromagnetic field of generator working in steady state is calculated...
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...
This paper presents an approach to realize an equivalent hardware representation of PM synchronous machines through a physics-based machine model for hardware-in-the-loop simulation of PWM drives. The equivalent hardware representation of the machine is achieved using a controllable load. The load current is controlled to be the same as the currents obtained over the physics-based model of the machine...
This article discusses about the use of finite-element methods for the calculation of electromagnetic fields in electrical machines and for the determination of machines parameters and characteristics. The solutions offered can be classified as follows: steady state simulation, frequency domain simulation, time domain modeling and simulation, coupled electro-magnetic and thermal problems.
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