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 per...

Ngày tải lên: 16/09/2015, 12:26

... 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 po...

Ngày tải lên: 26/11/2015, 09:42

... 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...

Ngày tải lên: 15/09/2015, 22:17

... 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 rot...

Ngày tải lên: 03/01/2014, 19:50

... (1974)  As the wave number ka increases The wave forces on the cylinders oscillate around the wave forces on an isolated cylinder  As the cylinder spacing increases, the wave force on the cylinders ... Remarks  The wave forces acting on two cylinders and three cylinders are computed by using boundary element method The numerical r...

Ngày tải lên: 26/07/2014, 07:20

... 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...

Ngày tải lên: 16/09/2015, 12:06

... 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...

Ngày tải lên: 04/10/2015, 15:45

... surface of cross section -118- 900 21 50 21 50 27 5 D2 D1 1700 25 0 P 325 P 1800 1700 100 520 0 Beam s A1 and A2 21 50 21 50 900 27 5 P D2 D1 1700 1800 375 325 P 1700 520 0 Beam s B1 21 50 21 50 900 27 5 D1 D2 ... e2θ ; * v1 = v1 ; * v2 = v2 ; θ 1* = θ ; * 2 = 2 ; where e1 and e2 are the eccentricities of cable at the deviators and 2, respectively -114- (6.7) u2*,v2*,θ 2* Ca...

Ngày tải lên: 07/11/2012, 11:04

... [K 11 ] 1 ({ΔF1 } + {R1 } − [K 21 ]{ΔU }) (2.22) {ΔF2 } = [K 22 ]{ΔU } + [K12 ]{ΔU } − {R2 } (2.23) K 12 ⎤ K 22 ⎥ ⎦ ⎧ ΔU ⎫ ⎬ ⎨ ⎩ΔU ⎭ (1) ⎧ ΔF ⎫ ⎧ R ⎫ = ⎨ 1 +⎨ 1 ⎩ΔF2 ⎭ ⎩ R2 ⎭ ⎡ K 11 ⎢K ⎣ 21 Solving ... (3 .18 a) 12 K 6K 12 K 6K ⎤ ⎡ ⎢0; − L3 ; − L2 ; 0; L3 ; − L2 ⎥ ⎣ ⎦ 12 K 1+ L2 (3 .18 b) ⎡ 12 ⎛ 12 K ⎞ 6 12 ⎛ 12 K ⎞ ⎤ 0; − + x; ⎜ − − ⎟ + x; 0; − x; ⎜ − ⎟ + x⎥ ⎢ L⎠ L ⎦ 12 K L...

Ngày tải lên: 07/11/2012, 11:04

... 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: Attr...

Ngày tải lên: 05/09/2013, 14:59

... 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% an...

Ngày tải lên: 05/09/2013, 15:28

... 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 co...

Ngày tải lên: 03/01/2014, 19:38

... GCGCGGATCCACCATGGCACTTAACCCATG CGCGCCTCGAGTTAAGCTGCACCTCCTGATCT GCGCGGATCCACCATGCCCTTCCGGAGAAGA CGCGCCTCGAGTTAAGCTGCACCTCCTGATCT GCGCGGATCCACCATGTCCTTGAGGGACACA CGCGCCTCGAGTTAAGCTGCACCTCCTGATCT GCGCGGATCCACCATGGCACTTAACCCATG ... GCGCGGATCCACCATGGCACTTAACCCATG CGCGCCTCGAGTTAACGTTCTGTTGGTGAGCT GCGCGGATCCACCATGGCACTTAACCCATG CGCGCCTCGAGTTATGGAGTTGAACTAGCTGT GCGCGGATCCACCATGTCCTTGAGGGACACA CGCGCC...

Ngày tải lên: 22/02/2014, 04:20

... and Crystal structure of Staphylococcus aureus EF -G Carl Trygger’s Foundation to M Selmer and S Sanyal, the Goran Gustafsson Foundation to S Sanyal, ¨ and Magnus Bergvall’s foundation and the ... Crystal structure of a mutant elongation factor G trapped with a GTP analogue FEBS Lett 579, 449 2–4 497 Laurberg M, Kristensen O, Martemyanov K, Gudkov AT, Nagaev I...

Ngày tải lên: 06/03/2014, 22:21

... FnBPA-2, FnBPA-3, FnBPA-4, FnBPA-5, FnBPA-6, FnBPA-7, FnBPA-8, FnBPA-9, FnBPA-10, and < /b> FnBPA-11, and < /b> FnBPB-1, FnBPB-2 ⁄ 3, FnBPB-4, FnBPB-5, FnBPB-6, FnBPB-7, FnBPB-8, FnBPB-9, FnBPB-10, and < /b> FnBPB-11, ... Fn ABP Fn ABP Fn ABP Fn ABP Fn A-< /b> 8 B Fn PA BP -9 Fn ABP 10 A < /b> -1 0.0 Fig Binding of < /b> Fn to the < /b> predicted FnBRs of < /b> FnBPB and < /b> FnBP...

Ngày tải lên: 06/03/2014, 22:21