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I_D^ayl=600A; α_pr=α_ayl; V_p^pr=20km/s; P_D^pr=303,2kVt; µ_p^pr=4,28; D_K^pr=D_K^ayl=1,05mm; µ_p ^ayl=4,38; V_p^ayl=20km/s; P_D^ayl=307kVt.
Bundan kelib chiqadiki:
n_D^pr=4.28*n_D^ayl/4.38=0,97 n_D^ayl
M_D^pr=(307*n_D^ayl *Mayl*4,38)/303,2*0,97*n_D^ayl*4,28=1,06 M_D^ayl
I_D^pr = 303,2 I_D^ayl /307= 0,98 I_D^ayl

To‘liq maydon PP:

n_D^pr=0,97*748,2=725,7
n_D^pr=0,97*599,8=581,8
n_D^pr=0,97*477,8=463,4
n_D^pr=0,97*382,2=370,7
n_D^pr=0,97*313=303,6
n_D^pr=0,97*270,2=262,09
n_D^pr=0,97*253,8=245,4
n_D^pr=0,97*263,8=255,8
Kuchsizlangan maydon OP1:
n_D^pr=0,97*1025=994,2
n_D^pr=0,97*815=790,5
n_D^pr=0,97*649=629,5
n_D^pr=0,97*527=511,1
n_D^pr=0,97*449=435,5
n_D^pr=0,97*415=402,5
n_D^pr=0,97*425=412
n_D^pr=0,97*479=464

Kuchsizlangan maydon OP2:

n_D^pr=0,97*1456=1412,3
n_D^pr=0,97*1132,5=1098,5
n_D^pr=0,97*882=855,5
n_D^pr=0,97*704,5=683
n_D^pr=0,97*600=582
n_D^pr=0,97*568=550
n_D^pr=0,97*610=591,7
n_D^pr=0,97*724=702
To‘liq maydon PP:
M_D^ayl = 3,89 kN·m; bo‘lganda M_D^pr = 1,06·3,89 = 4,12 kN·m;
M_D^ayl = 4,86 kN·m; bo‘lganda M_D^pr = 1,06·4,86 = 5,15 kN·m;
M_D^ayl = 6,104 kN·m; bo‘lganda M_D^pr = 1,06·6,104 = 6,47 kN·m;
M_D^ayl = 7,63 kN·m; bo‘lganda M_D^pr = 1,06·7,63 = 8,05 kN·m;
M_D^ayl = 9,31 kN·m; bo‘lganda M_D^pr = 1,06·9,31 = 9,86 kN·m;
M_D^ayl = 10,79 kN·m; bo‘lganda M_D^pr = 1,06·10,79 = 11,43 kN·m;
M_D^ayl = 11,49 kN·m; bo‘lganda M_D^pr = 1,06·11,49 = 12,17 kN·m;
M_D^ayl = 11,05 kN·m; bo‘lganda M_D^pr = 1,06·11,05 = 11,71 kN·m;

Kuchsizlangan maydon OP1:

M_D^ayl = 2,84 kN·m; bo‘lganda M_D^pr = 1,06·2,84 = 3,01 kN·m;
M_D^ayl = 3,57 kN·m; bo‘lganda M_D^pr = 1,06·3,57 = 3,78 kN·m;
M_D^ayl = 4,49 kN·m; bo‘lganda M_D^pr = 1,06·4,49 = 4,75 kN·m;
M_D^ayl = 5,53 kN·m; bo‘lganda M_D^pr = 1,06·5,53 = 5,86 kN·m;
M_D^ayl = 6,49 kN·m; bo‘lganda M_D^pr = 1,06·6,49 = 6,87 kN·m;
M_D^ayl = 7,02 kN·m; bo‘lganda M_D^pr = 1,06·7,02 = 7,44 kN·m;
M_D^ayl = 6,86 kN·m; bo‘lganda M_D^pr = 1,06·6,86 = 7,27 kN·m;
M_D^ayl = 6,08 kN·m; bo‘lganda M_D^pr = 1,06·6,08 = 6,44 kN·m;

Kuchsizlangan maydon OP2:

M_D^ayl = 2,003 kN·m; bo‘lganda M_D^pr = 1,06·2,003 =2,12 kN·m;
M_D^ayl = 2,57 kN·m; bo‘lganda M_D^pr = 1,06·2,57 = 2,72 kN·m;
M_D^ayl = 3,3 kN·m; bo‘lganda M_D^pr = 1,06·3,3 = 3,49 kN·m;
M_D^ayl = 4,19 kN·m; bo‘lganda M_D^pr = 1,06·4,19 = 4,44 kN·m;
M_D^ayl = 4,86 kN·m; bo‘lganda M_D^pr = 1,06·4,86 = 5,15 kN·m;
M_D^ayl = 5,13 kN·m; bo‘lganda M_D^pr = 1,06·5,13 = 5,43 kN·m;
M_D^ayl = 4,78 kN·m; bo‘lganda M_D^pr = 1,06·4,78 = 5,06 kN·m;
M_D^ayl = 4,02 kN·m; bo‘lganda M_D^pr = 1,06·4,02 = 4,26 kN·m;


I_D^ayl = 600. 700. 800. 900. 1000. 1100. 1200. 1300. А
I_D^pr = 0,98·600 = 588 А.
I_D^pr = 0,98·700 = 686 А.
I_D^pr = 0,98·800 = 784 А.
I_D^pr = 0,98·900 = 882 А.
I_D^pr = 0,98·1000 = 980 А.
I_D^pr = 0,98·1100 = 1078 А.
I_D^pr = 0,98·1200 = 1176 А.
I_D^pr = 0,98·1300 = 1274 А.
Ko‘rib chiqilayotgan misol uchun loyihalashtirilayotgan teplovozning elektromexanik xarakteristikasi 2-rasmda berilgan.
2-rasm. Yuk tortuvchi elektrodvigatelning elektromexanik xarakteristikasi.
5. Yuk tortuvchi elektrodvigatelning yuk tortish xarakteristikasini hisob-kitob qilish.
Elektr yuk tortish xarakteristikasining hisob-kitobini F_D^pr=f(I_D) va V_D^pr=f(I_D) quyidagi tartibda navbatma-nabat amalga oshiramiz. Bunda F_D va V_D tegishli ravishda yuk tortish kuchi va loyihalashtirilayotgan teplovozning bitta g‘ildirak motor blokining tezligini bildiradi.
a) tuzilgan elektromexanik xarakteristikadan kelib chiqib dvigatelning barcha ish rejimlari (PP, OP1, OP2) uchun yuk tortish elektrodvigatel tokining (I_d) bir necha qiymatlarini belgilaymiz va tegishli ravishda M_D^pr va n_D^pr larni aniqlaymiz;
b) M_D va n_D larning topilgan qiymatlari uchun yuk tortish kuchi va tezligini quyidagi formulalar yordamida hisoblab topamiz:
F_D=2μ_p^prM_D^prη_zp /D_K; (12)
V = 60π D_К n_D^pr / 1000μ_р^pr (13)
Hisob–kitobni tok kattaligi I_D^ayl =600A uchun amalga oshiramiz:
F_D=7,94M_D^pr
To‘liq maydon PP:
M_D = 4.12 kN·m; F_D1 = 7.94 · 4.12 = 32.7 kN;
M_D = 5.15 kN·m; F_D1 = 7.94 · 5.15 = 40.8 kN;
M_D = 6.47 kN·m; F_D1 = 7.94 · 6.47 = 51.3 kN;
M_D = 8.05 kN·m; F_D1 = 7.94 · 8.05 = 63.9 kN;
M_D = 9.86 kN·m; F_D1 = 7.94 · 9.86 = 78.2 kN;
M_D = 11.43 kN·m; F_D1 = 7.94 · 11.43 = 90.76 kN;
M_D = 12.17 kN·m; F_D1 = 7.94 · 12.17 = 96.6 kN;
M_D = 11.71 kN·m; F_D1 = 7.94 · 11.71 = 92.9 kN.

Kuchsizlangan maydon OP1:

M_D =3.01 kN·m; F_D2 = 7.94 · 3.01 = 23.8 kN;
M_D =3.78 kN·m; F_D2 = 7.94 · 3.78 = 30.01 kN;
M_D =4.75 kN·m; F_D2 = 7.94 · 4.75 = 37.7 kN;
M_D =5.86 kN·m; F_D2 = 7.94 · 5.86 = 46.5 kN;
M_D =6.87 kN·m; F_D2 = 7.94 · 6.87 = 54.5 kN;
M_D =7.44 kN·m; F_D2 = 7.94 · 7.44 = 59 kN;
M_D =7.27 kN·m; F_D2 = 7.94 · 7.27 = 57.7 kN;
M_D =6.44 kN·m; F_D2 = 7.94 · 6.44 = 51.1 kN.

Kuchsizlangan maydon OP2:

M_D =2.12 kN·m; F_D3 = 7.94 · 2.12 = 16.8 kN;
M_D =2.72 kN·m; F_D3 = 7.94 · 2.72 = 21.5 kN;
M_D =3.49 kN·m; F_D3 = 7.94 · 3.49 = 27.7 kN;
M_D =4.44 kN·m; F_D3 = 7.94 · 4.44 = 35.2 kN;
M_D =5.15 kN·m; F_D3 = 7.94 · 5.15 = 40.89 kN;
M_D =5.43 kN·m; F_D3 = 7.94 · 5.43 = 43.1 kN;
M_D =5.06 kN·m; F_D3 = 7.94 · 5.06 = 40.17 kN;
M_D =4.26 kN·m; F_D3 = 7.94 · 4.26 = 33.8 kN.
V_D^pr=0,046n_d^pr
To‘liq maydon PP:
n_D = 725.7 min^-1; V_D1 = 0.046 ·725.7= 33.3 km/s;
n_D = 581.8 min^-1; V_D1 = 0.046 ·581.8= 26.7 km/s;
n_D = 463.4 min^-1; V_D1 = 0.046 · 463.4= 21.03 km/s;
n_D = 370.7 min^-1; V_D1 = 0.046 · 370.7= 17.05 km/s;
n_D = 303.6 min^-1; V_D1 = 0.046 · 303.6= 13.96 km/s;
n_D = 262.09 min^-1; V_D1 = 0.046 ·262.09= 12.05 km/s;
n_D = 245.4 min^-1; V_D1 = 0.046 · 245.4= 11.28 km/s;
n_D = 255.8 min^-1; V_D1 = 0.046 · 255.8= 11.76 km/s.

Kuchsizliangan maydon OP1:

n_D = 994.2 min^-1; V_D2 = 0.046·994.2= 45.7 km/s;
n_D = 790.5 min^-1; V_D2 = 0.046·790.5= 36.3 km/s;
n_D = 629.5 min^-1; V_D2 = 0.046·629.5= 28.9 km/s;
n_D = 511.1 min^-1; V_D2 = 0.046·511.1= 23.5 km/s;
n_D = 435.5 min^-1; V_D2 = 0.046·435.5= 20.03 km/s;
n_D = 402.5 min^-1; V_D2 = 0.046·402.5= 18.5 km/s;
n_D = 412 min^-1; V_D2 = 0.046·412= 18.9 km/s;
n_D = 464 min^-1; V_D2 = 0.046·464= 21.3 km/s.

Kuchsizliangan maydon OP2:

n_D = 1412.3 min^-1; V_D3 = 0.046·1412.3= 64.9 km/s;
n_D = 1098.5 min^-1; V_D3 = 0.046·1098.5= 50.5 km/s;
n_D = 855.5 min^-1; V_D3 = 0.046·855.5= 39.3 km/s;
n_D = 683 min^-1; V_D3 = 0.046·683= 31.4 km/s;
n_D = 582 min^-1; V_D3 = 0.046·582= 26.7 km/s;
n_D = 550 min^-1; V_D3 = 0.046·550= 25.3 km/s;
n_D = 591.7 min^-1; V_D3 = 0.046·591.7= 27.2 km/s;
n_D = 702 min^-1; V_D3 = 0.046·702= 32.2 km/s.

Xuddi shunday hisob-kitob 600 A dan 1300 A gacha bo‘lgan diapozonda (oraliqda) har 100 A da amalga oshiriladi.

Yuk tortuvchi elektrodvigatelning barcha ish rejimlari uchun olingan hisob-kitoblarning natijalari 5-jadvalga jamlanadi. Hisob-kitoblar natijalari bo‘yicha 2-rasmda keltirilganidek bog‘liqlik tuzilib chiqiladi F_D^pr=f(I_D) va V_D^pr=f(I_D).
Yuk tortuvchi elektrodvigatelning elektr yuk tortish va elektrmexanik hisob-kitoblarini rasmiylashtirish uchun tavsiya etiladigan jadvalning tuzilishi 5-jadvalda keltirilgan.
5-jadval