Electric Machinery Fundamentals Power & Energy 6 doc

... plot(amps,VR(1,:),'b-','LineWidth',2.0); hold on; plot(amps,VR(2,:),'k ','LineWidth',2.0); plot(amps,VR(3,:),'r ','LineWidth',2.0); title ('\bfVoltage ... plot(amps,abs(VSP(3,:)),'r ','LineWidth',2.0); title ('\bfSecondary Voltage Versus Load'); xlabel ('\bfLoad (A)'); ylabel (&ap...

Ngày tải lên: 21/06/2014, 21:20

... plot(t,vx,'b','Linewidth',1.0); hold on; plot(t,vy,'k ','Linewidth',1.0); title('\bfReference Voltages for fr = 500 Hz'); xlabel('\bfTime (s)'); ... plot(t,vb,'r:','Linewidth',2.0); plot(t,vc,'k ','Linewidth',2.0); title('\bfPhase Voltages'); xlabel('\bfTime (s)');...

Ngày tải lên: 21/06/2014, 21:20

... ( ) () ( ) () ( ) () sys sys sys 7 MW 1.5 61 .0 1 .67 6 61 .5 1. 961 60 .5fff=−+ −+ − sys sys sys 7 MW 91.5 1.5 103.07 1 .67 6 118 .64 1. 961 fff=−+− +− sys 5.137 3 06. 2f = sys 59 .61 Hzf = The power supplied by each ... plot(I,abs(VT_lag),'b-','LineWidth',2.0); hold on; plot(I,abs(VT_unity),'k ','LineWidth',2.0); plot(I,abs(VT...

Ngày tải lên: 21/06/2014, 21:20

... plot(nm,t_ind,'k-','LineWidth',2.0); xlabel('\bf\itn_{m}'); ylabel('\bf\tau_{ind}'); title ('\bfInduction Motor Torque-Speed Characteristic'); ... plot(nm,eff,'b-','LineWidth',2.0); xlabel('\bf\itn_{m} \rm\bf(r/min)'); ylabel('\bf\eta (%)'); title ('\bfEfficiency versus Speed'); grid ....

Ngày tải lên: 21/06/2014, 21:20

... V 0 0.09 0. 16 2.5 36. 87 1 .67 20 j φφφ −∠° ++= +Ω ∠°Ω∠−°Ω VVV () ( ) ()() ,load ,load ,load 5.443 60 .6 277 0 V 0.4 36. 87 0 .6 20 0 φφφ ∠−° −∠°+∠− ° +∠° =VVV () ,load 5.955 53.34 1508 60 .6 φ ∠− ... 62 2 φπφπ φ == edpP fkkNV φ φ 7 562 1=V The desired phase voltage is 6 kV / 3 = 3 464 V, so Wb 0 46. 0 7 562 1 V 3 464 == φ (b) The fifth harmonic: ()( ) 64 3.0...

Ngày tải lên: 21/06/2014, 21:20

... plot(amps,abs(VS(1,:)/1000),'b-','LineWidth',2.0); hold on; plot(amps,abs(VS(2,:)/1000),'k ','LineWidth',2.0); plot(amps,abs(VS(3,:)/1000),'r ','LineWidth',2.0); ... title ('\bfSecondary Voltage Versus Load'); xlabel ('\bfLoad (A)'); ylabel ('\bfSecondary Voltage (kV)'); legend('0.8 PF laggi...

Ngày tải lên: 21/06/2014, 21:20

... ) ,pu cos 1 0.4 765 cos41 .6 0.3 56 G PVI θ == °= ()( ) ,pu sin 1 0.4 765 sin 41 .6 0.3 16 G QVI θ == °= ()( ) ,pu 1 0.4 765 0.4 765 G SVI== = ()( ) ,pu base 0.3 56 1000 kVA 3 56 kW GG PPS== ... 8 .65 2.443 8 .65 ∠° ==∠−° ∠° I The load voltage under these conditions would be ()() Load,pu Load 0.409 8 .65 2.358 0.109 0. 966 6. 0Zj==∠−°+ =∠−°VI ()( ) Load Load,p...

Ngày tải lên: 21/06/2014, 21:20

... plot(If,abs(Ia_nl),'k-','Linewidth',2.0); hold on; plot(If,abs(Ia_half),'b ','Linewidth',2.0); plot(If,abs(Ia_full),'r:','Linewidth',2.0); ... 266 V 1. 06 200,000 VA V Z S φ == =Ω 166 power limit is 16. 05 MVA. If the input power is 10 MW, then the maximum reactive power that still protects the stator current is (...

Ngày tải lên: 21/06/2014, 21:20

... (8- 56) . 230 figure(1); plot(t_ind,n,'b-','LineWidth',2.0); hold on; xlabel('\bf\tau_{ind} (N-m)'); ylabel('\bf\itn_{m} \rm\bf(r/min)'); title ('\bfSeries ... plot(t_ind_noar,n_noar,'b-','LineWidth',2.0); hold on; plot(t_ind_ar,n_ar,'k ','LineWidth',2.0); xlabel('\bf\tau_{ind} (N-m)');...

Ngày tải lên: 21/06/2014, 21:20

... (['Vt = ' num2str(Vt(ii)) ' V']); disp (['If = ' num2str(i_f(ii)) ' A']); % Plot the curves figure(1); plot(i_f,Ea,'b-','LineWidth',2.0); ... figure(1); plot(i_l,v_t,'b-','LineWidth',2.0); xlabel('\bf\itI_{L} \rm\bf(A)'); ylabel('\bf\itV_{T} \rm\bf(V)'); title ('\bfTerminal Char...

Ngày tải lên: 21/06/2014, 21:20