Permanent magnet synchronous machines generate parasitic torque pulsations owing to distortion of the stator flux linkage distribution, variable magnetic reluctance at the stator slots, and secondary phenomena. The consequences are speed oscillations which, although small in magnitude, deteriorate the performance of the drive in demanding applications. The parasitic effects are analysed and mod...

In the present study, position estimation of switched reluctance motor (SRM) has been achieved on the basis of the artificial neural networks (ANNs). The ANNs can estimate the rotor position without using an extra rotor position sensor by measuring the phase flux linkages and phase currents. Flux linkage-phase current-rotor position data set and supervised backpropagation learning algorithm are...

The purpose of this study is to develop a mechanistic model to describe a conceptually new "flux-biological response" approach based on biotic ligand model (BLM) and Michaelis-Menten (M-M) kinetics to allow the linkage between valve closure behavior and sodium (Na) transport mechanism in freshwater clam Corbicula fluminea in response to waterborne copper (Cu). We test the proposed model against...

For improving the quality of the energy transfer from the power supply to the load, and reducing the harmful effects of the harmonics generated by nonlinear load. We propose a new multi-function converter (MFC) as an efficient solution to improve the power quality. This paper presents a new DPC strategy based on virtual flux Observer and switching table to control PWM rectifier achieving by thi...

Newly emerging magnetic flux can show a complicated linked or interwoven topology of the magnetic field. The complexity of this linkage or knottedness of magnetic flux is related to the free energy stored in the magnetic field. Magnetic reconnection provides a process to release this energy on the time scale of the dynamics. At the same time it approximately conserves the total magnetic helicit...

Direct Torque Control of induction motor fed drives has become popular and widely used in industries due to fast and good torque response. Induction motors (IM) are simple in construction and are less sensitive to the motor parameters compared to other vector control methods. A new torque and flux control scheme called the direct torque control (DTC) has been introduced for induction motors. In...

The squirrel cage induction motor direct torque control main problems due to and large stator flux pulsation. In this an improved model predictive algorithm considering multi-step delay compensation is proposed. At each sampling moment, predict the linkage at next moment under voltage vector. optimal vector deviation from reference value are selected as minimum objective function. Aiming proble...

This paper presents a new approach to the sensorless control of the switched-reluctance motor (SRM). The basic premise of the method is that an Artificial Neural Network (ANN) forms a very efficient mapping structure for the nonlinear SRM. Through measurement of the phase flux linkages and phase currents the neural network is able to estimate the rotor position, thereby facilitating elimination...

objective(s): non-syndromic sensorineural hearing loss (nshl) is a common disorder affecting approximately 1 in 500 newborns. this type of hearing loss is extremely heterogeneous and includes over 100 loci. mutations in the gjb2 gene have been implicated in about half of autosomal recessive nshl (arnshl) cases, making this the most common cause of arnshl. for the latter form of deafness, most f...

objective(s)marfan syndrome (mfs) is a severe connective tissue disorder withan autosomal dominant inheritance pattern. early diagnosis is critical in mfs. because of the large size of fibrillin-1 gene (fbn1), the uniqueness of mutations, and the absence of genotype-to-phenotype correlations linkage analysis can be very helpful for early diagnosis of mfs. in this study, eight polymorphic marker...