Fundamentals of Electrical Drivess - Chapter 2 ppt

... namely ψ = u  R L + jω  (2. 16) The amplitude and phase angle of the flux phasor are now ˆ ψ = ˆu   R L  2 + ω 2 (2. 17a) ρ ψ = −arctan  ωL R  (2. 17b) 32 FUNDAMENTALS OF ELECTRICAL DRIVES 2. 3 Coil resistance In ... should correspond with those given in figure 2. 17. Simple Electro-Magnetic Circuits 39 SCOPE1 SCOPE2 SCOPE3 u L u iR @ i -2 16. 323 m 0 21 6. 323 m...

Ngày tải lên: 09/08/2014, 06:22

... were open %%%%%%define variables A_c=10e-3*10e-3; % cross-section of core and armature 10mm x10 mm A_a=10e-3*10e-3; % assumed cross-section of airgap g=10e-3; % distance (airgap) between armature ... parameters depth =20 e-3; % thickness E and I core g=10e-3; % gap w_A=45e-3; % E core center leg width w_B =22 .5e-3; % E core side leg width n=500; % number of turns coil i_coil =20 ; % co...

Ngày tải lên: 09/08/2014, 06:22

... W Qs=imag(u_ 123 s*conj(i_ 123 s)); % reactive power VA %%%%%%%%%%%%%%%%%%%%%%5 %Delta connected u_ 123 d=u_RST*sqrt(3)*(cos(-gamma /2) +j*sin(-gamma /2) ); % U_phase phasor e_ 123 d=e_RST*sqrt(3)*(cos(-gamma /2) +j*sin(-gamma /2) ); ... SCOPE5 SCOPE4 SCOPE1 SCOPE3 B_S + - i p c u c i p L u L i u c u L u s i p s u s i u c u L 10 ground -9 89.810u -1 581 .29 4n 1597.573u -9 89.810...

Ngày tải lên: 09/08/2014, 06:22

... 166 FUNDAMENTALS OF ELECTRICAL DRIVES SCOPE2 SCOPE1 u 1 i 2S U 1 @ 2D i 2D 0 i 2S i 1 @ 2S 0 @ 2S i 1 i 2D @ 1 @ 2D @ 1 381.051 17.148 22 0.000 7 82. 597m 9.901 17.148 ... i1=sqrt(i1a. ^2+ i1b. ^2) ; plot(t,i1); grid; hold on i2D=sqrt(i2Da. ^2+ i2Db. ^2) ; plot(t,i2D,’r’) xlabel(’t (s)’) ylabel(’currents i_1, i_{D2} (A)’) legend(’ i_1’, ’i_{2D}’) figure psi1=sqrt(psi1a. ^2+...

Ngày tải lên: 09/08/2014, 06:22

... Heidelberg Printed on acid-free paper SPIN: 11760481 62/ techbooks 54 321 0 1-4 02 0-5 50 4-8 ebook 97 8-1 -4 02 0-5 50 4-1 ebook Springer2007 ISBN-10 () ( ) (HB) (HB) ISBN-10 1-4 02 0-5 503-X ISBN-13 97 8-1 -4 02 0-5 50 3-4 ... principles 12 1.7 Machine sizing principles 22 1.8 Tutorials for Chapter 1 23 2. SIMPLE ELECTRO-MAGNETIC CIRCUITS 29 2. 1 Intr...

Ngày tải lên: 09/08/2014, 06:22

... MATLAB 74 FUNDAMENTALS OF ELECTRICAL DRIVES S COPE1GAI 0.0998 GAI 0. 02 i 1 i RM i 2 i M @' 2 i 11 u 1/50 u 2/ 10 u 1 @ 2 @ 1 i' 2 -1 2. 2 82 -4 2. 855m -3 3.689 11.182m 118.755m -1 2. 239 -1 8.668 ... (3 .24 ). u 1 = dψ 1 dt (3 .24 a) u 2 = dψ 2 dt (3 .24 b) ψ 1 = i 1 L σ + ψ  2 (3 .24 c) ψ  2 = i M L M (3 .24 d) i M = i 1 − i  2...

Ngày tải lên: 09/08/2014, 06:22

... (V)’) grid axis([0 20 e-3 -2 50 25 0]) %%%%%%%% figure subplot (2, 1,1) plot(datoutn(:,6),datoutn(: ,2) ) grid xlabel(’time (s)’) ylabel(’u_{S\alpha} (V)’) axis([0 20 e-3 -4 00 400]) subplot (2, 1 ,2) plot(datoutn(:,6),datoutn(:,3),’r’) xlabel(’time ... 0.008 0.01 0.0 12 0.014 0.016 0.018 0. 02 20 0 0 20 0 time (s) u S1 (V) 0 0.0 02 0.004 0.006 0.008 0.01 0.0 12 0.014 0.016 0.0...

Ngày tải lên: 09/08/2014, 06:22

... directly 1 82 FUNDAMENTALS OF ELECTRICAL DRIVES example, in the two-pole machine we can rotate the resultant magnetic field by an angle of π 2 radians by way of a voltage excitation sequence of the ... − ˆ i √ 2 , i β = ˆ i √ 2 , T e = ˆ ψ m ˆ i √ 2 (c) θ = π 2 , i α = − ˆ i, i β =0, T e =0 Figure 7.8. IRTF Symbolic model and space vector diagrams, for: θ =0, θ = π 4 and...

Ngày tải lên: 09/08/2014, 06:22

... 2. 25]A i F (A) I s (A) Q s (VA) ρ m ◦ 0.5 0.60 373.06 -5 3.13 0.75 0. 42 241.73 -3 2. 23 1.0 0.30 130.96 -2 3.58 1 .25 0 .23 25 .81 -1 8.66 1.50 0 .26 -7 6.84 -1 5.47 1.75 0.35 -1 78.16 -1 3 .21 2. 00 0.47 -2 78.66 ... Simulink TeM=0.5; %torque iFM=[0.5:0 .25 :2. 25]; % selected field current values %measured, from display, load angle (deg) rhoM= [-5 3.13 -3...

Ngày tải lên: 09/08/2014, 06:22

... 13 .29 624 3.31 6539.08 66.46 50 1888.55 19.81 12. 40 622 4.90 5690.40 62. 00 30 22 84.33 17.39 9. 32 5464.44 321 6.46 46.61 20 25 03.43 13.93 6.95 4375. 32 1786. 92 34.74 10 27 34.06 8.31 3.93 26 09 .29 570.73 ... 13 .29 12. 40 9. 32 6.95 3.93 2. 11]; Ps3=[4760.36 5393.19 5916.81 61 82. 37 624 3.31 622 4.90 5464.44 4375. 32 2609 .29 1 426 .96]; Qs3=[1 029 9.87 9408.48 826 3. 42...

Ngày tải lên: 09/08/2014, 06:22