نتایج جستجو برای: induction machines
تعداد نتایج: 257031 فیلتر نتایج به سال:
Main flux saturation in induction machines plays an important role in a number of operating regimes and therefore has to be accounted for in the process of modelling. The current state space model of a saturated induction machine has gained substantial popularity recently as an excellent tool for transient and steady-state time domain analysis of induction motor drives when the main flux satura...
Variable speed operation of a wind turbine generator improves its energy capturing capability. Up to the present, the machines employed have been induction machines, conventional synchronous machines or DC machines. The major drawback of these machines is that a complicated arrangement of slip rings or commutators with brushes, and a full-rating power converter are required. Reliability and cos...
Direct Torque Control with Multilevel Inverter (DTC-MLI) has emerged recently in high dynamics AC drives fields for induction machines or permanent magnet machines application. In this paper, a review on a variety of techniques and concepts of direct torque control of multilevel inverter-fed induction machines is presented. The techniques and concept involved are classified as follows: Look-up ...
The analysis of saturated machines is generally performed with the stator and rotor currents, or mixed combinations of currents and flux linkages as state variables were also taken into account. A synthesis of possible models of induction machines is presented. Possible models contain explicit terms that describe cross-saturation except for the winding flux model. This paper treats the impact o...
This paper presents an overview on performance and reliability evaluation of induction machines. Induction Machine has been found to be very suitable for electrical to mechanical energy conversion vice versa. Induction machines have been subjected to increased demand for low cost and size, simple construction, absence of separate dc source for excitation, least maintenance, operational simplici...
The article presents a concept for new design of the well-known Transverse Flux Machine (TFM) made with use flat core used in classical electrical machines. proposed was first analytically verified and subsequently using finite element method, which fully corroborated results. simulations show that set three single-phase TFM machines slotted rotor yokes generates torque over times greater than ...
This article presents the application of model predictive control (MPC) in high-performance drives. A wide variety machines have been considered: Induction machines, synchronous linear motors, switched reluctance and multiphase machines. The these has done by introducing minor easy-to-understand modifications to basic concept, showing high flexibility simplicity strategy. second part is dedicat...
This paper focuses on experimental results to prove that motor current signature analysis (MCSA) can diagnose shorted turns in low voltage stator windings of 3-phase induction motors using LabVIEW. The diagnostic strategy is presented and variables that influence the diagnosis are discussed. Current spectra from motors with short-circuited turns (with and without short circuit current limiting ...
Different alternatives to detect and diagnose faults in induction machines have been proposed and implemented in the last years. These new alternatives are characterised by an on-line and non-invasive feature, that is to say, the capacity to detect faults while the machine is working and the capacity to work sensorless. These characteristics, obtained by the new techniques, distinguish them fro...
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