Computational analysis of a permanent magnet synchronous machine using numerical techniques

... is vital to machine analysis as it is a fast and low-cost way of predicting machine performances Traditional analytical methods, such as lumped parameter models are computationally fast and simple ... It also deals with the parameter estimation of permanent magnet synchronous machines using both experimental and computational methods A line-start interior permanent magnet synchronous machine ... Permanent Magnets The properties and performances of a permanent magnet machine are greatly affected by the characteristics of permanent magnets Therefore proper representation of permanent magnet...

Design optimization of permanent magnet synchronous motors using response surface analysis and genetic algorithm

... The development of Permanent Magnet Machines 1.1.2 Features of permanent magnet motors Permanent magnet synchronous motors iii 1.2.1 Structures and operating principles ... with the analysis and design of buried type Interior Permanent Magnet Synchronous Motors (IPMSM) The objective is to develop a design optimization procedure for this type of motors that is more ... List of Figures 1.1 Magnetic characteristics of the main class of permanent magnets [2] 1.2 Evolution of the magnetic material during the 20th century [2] 1.3 Partial demagnetization of a permanent...

AN1292 sensorless field oriented control (FOC) for a permanent magnet synchronous motor (PMSM) using a PLL estimator and field weakening (FW)

... certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India The Company’s quality ... the motors’ characteristic parameters implied in the control of the air gap field weakening The effect of the armature d-axis current over the air gap field weakening depends on the shape and magnetic ... SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER All of the software covered in this application note is available as a single...

Use of an extension of the park's transformation to determine control laws applied to a non sinusoidal permanent magnet synchronous motor

... knowledge of the non sinusoidal permanent magnet synchronous motor We are so able as well to analyse the classical control laws such as 120' voltage control for example, as to deduce of this new ... electromotiveforces, the motor being not supply Park's transformation AAer this first transfoxmation, the Pa& transfomation allows us to work in the rotor's reference, through a rotation of an angle PO.Using the ... PROPOSAL OF AN EXTENSION OF THE PARK'S TRANSFORMATION Classical Park's transformation is in fact the succession of two transfomations The torque is then given by: T, = p.(@~,.io+@'did+@'q.iq) For a...

Analysis, design and control of permanent magnet synchronous motors for wide speed operation

... Torque performance of SVM based DTC and Current Control for a wide speed operation 169 6.26 Power performance of SVM based DTC and Current Control for a wide speed operation ... Control of IPMSM in Wide Speed Operation 24 Outline of the Thesis 25 Analysis of Interior Permanent Magnet Synchronous Motors for Wide- Speed Operation ... presents aspects of analysis, design and control of permanent magnet synchronous motors (PMSMs) for wide- speed operations An analytical method has been developed based on d- and q- axis equivalent...

FAULT DIAGNOSIS OF PERMANENT MAGNET SYNCHRONOUS MOTOR BASED ON MECHANICAL AND MAGNETIC CHARACTERISTIC ANALYSIS

... FAULT DIAGNOSIS OF PERMANENT MAGNET SYNCHRONOUS MOTOR BASED ON MECHANICAL AND MAGNETIC CHARACTERISTIC ANALYSES YU YINQUAN A THESIS SUBMITTED FOR THE DEGREEM OF DOCTOR OF PHILOSOPHY ... COMPUTATION OF UNBALANCED MAGNETIC PULL AND MECHANICAL UNBALANCED FORCE IN MOTOR 64 5.1 Fundamental theory of electromagnetic force calculation 64 5.2 Introduction of Finite Element Method on Magnetic ... INTRODUCTION and motor fault type and fault position can be indicated precisely Numerous studies have been done on the motor fault analysis using vibration signals Mathematical Model of Permanent Magnet...

Numerical analysis of a brushless permanent magnet DC motor using coupled systems

... to characterize the material Another type of material that is characterized by a broad hysteresis loop is called hard magnetic material 1.3.1 Hard magnetic materials (Permanent magnets) Permanent ... commutator motor: The construction of a permanent magnet DC motor( PMDC) is similar to a DC conventional motor with the electromagnetic excitation system replaced by permanent magnets A PMDC commutator ... have made using BLDC motor a viable alternative The developments and applications of the BLDC motors have been greatly accelerated by improvements in permanent magnet materials, especially rare-earth...

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Computational fluid dynamics analysis of a twisted airfoil shaped two-bladed H-Darrieus rotor made from fibreglass reinforced plastic (FRP)

... types of Darrieus rotors are mainly available, namely troop skein (Eggbeater) Darrieus rotor and H-Darrieus rotor H-Darrieus rotor was in the same patent of 1931[2] It has two to three airfoil shaped ... 0.265 at a TSR of 2.214, and the maximum Ct obtained is 0.124 at a TSR of 1.962 And the standard deviation of computational Cp from experimental Cp is 0.81% and that of computational Ct from experimental ... 23 (a) Variation of Ct with TSR, and (b) deviation of computational Ct from experimental Cp for H/D ratio 2.10 (a) (b) Figure 24 (a) Variation of Cp with TSR, and (b) deviation of computational...

Báo cáo khóa học: Mutational and computational analysis of the role of conserved residues in the active site of a family 18 chitinase docx

... residues are not described well and there is no example of mutational analysis of all of these residues in the same enzyme To obtain an insight into how the many conserved residues in the active sites ... circulans, whereas it may be mutated to asparagine without loss of activity in other family 18 chitinases [28,30] Preliminary results of a comparative study of available structures of family 18 chitinases ... bond ˚ and Asp140 is 10.7 A Mutational effects The residues mutated in this study are shown in Fig Asp140, Asp142, Glu144 and Asp215 were mutated individually to asparagine and alanine, Tyr10 and...

Báo cáo khoa học: "A Computational Analysis of Complex Noun Phrase in Messages" docx

... Semantic patterns in complex noun phrases fall into two types: part names and other noun phrases Names for pieces of equipment often contain complex noun sequences, i.e stacked nouns The relationships ... sequences A major feature of noun phrases in this set of messages is the presence of many long sequences of left modifiers of nouns, (3) {3) (a) forward kingpost sliding padeye unit (b) coupler ... having to give highly descriptive names to parts in terms of their function and relation to other parts Modifiers of nouns include nouns and adjectives In Left Modifiers of Nouns Type Total noun...

Báo cáo khoa học: "A Linguistic and Computational Analysis of the German "Third Construction"*" potx

... terms of a closely related automaton, the Bottom-up EPDA (BEPDA) ~ The BEPDA consists of a finite-state control and of a stack of stacks There are two types of moves: either an input is read and ... new stack on top of the stack of stacks, or a fixed number of stacks below and above a designated stack on the stack of stacks is removed and a new symbol is pushed on the top of the designated ... popped Then, the remaining noun and verb are simply read and popped If we use any of the metrics proposed in [Joshi 1990] (such as the sum of the number of moves that input elements are stored in the...

Báo cáo hóa học: " Analysis of a Combined Antenna Arrays and Reverse-Link Synchronous DS-CDMA System over Multipath Rician Fading Channels" doc

... of spatial processing at cell site (CS) Therefore this paper presents the BER analysis of AA receiver in reverse-link asynchronous multipath Rician channels, and analyzes the performance of an ... /Ω(k) , and note that at Kr(k) = −∞ dB, the specular path is absent and the channel is a multipath Rayleigh fading environment [16] Here, it is assumed that multipath Rician fading channel gain is ... sensor spacing is half the carrier wavelength, and an important parameter that characterizes a Rician fading channel is deﬁned as the ratio of the specular component power to the Rayleigh fading...

Standards for efficiency of electric motors permanent magnet synchronous motor technology

... and R McElveen, “InIMPORTANCE OF duction vs permanent magnet motors, ” IEEE now profit from the advantages of PM Ind Applicat Mag., vol 15, no 6, pp 28–35, motors For single-speed applications, ... high motor efficiency when the motor is designed for and operated at 60 Hz instead of 50 Hz The difference in efficiency between 50 and 60 Hz varies with the number of poles and the size of the motor ... 0.1 10 Motor- Rated Power (kW) 100 IE3 Efficiency Levels for 50 Hz IE3 Efficiency Levels for 60 Hz Adapted Ultrapremium Efficiency Levels for 50 Hz Commercial Ultrapremium Efficiency Levels for 60...

Economic feasibility analysis of a wind farm in Caldas da Rainha, Portugal

... understand the behavior of the variables involved in economical and financial assessing of a wind farm as a manner of validating the indicators of attractiveness and risk of energy projects and analysis ... projects and costs evaluation The economic assessment of hypothetical wind farm installed in Caldas da Rainha, we obtained the following results: Attractiveness Table Economic and financial indicators ... considered the same parameters defined in Tables and in Software RETScreen International Clean Energy Project Analysis in order to make an analysis of economic and financial viability of wind energy...

Reliability analysis of a power system based on the multi state system theory

... V RELIABILITY ANALYSIS OF THE POWER SYSTEM The reliability of the power system is analyzed using the multi- state system theory According to (2), the universal generating function of the battery ... this paper, and is compared 97 (1) The reliability of the power system obtained by the traditional system reliability theory is always conservative [5] (2) The power system is a multi- state system ... reliability theory are always conservative For example, when the required capacity is 23.4 Ah, the reliability of the system obtained by the traditional system reliability theory is only 0.25107, but the...

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