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I_D^pr=P_D^prI_D^ayl/R_D^ayl (11)

SHunday qilib, loyihadagi teplovoz elektrodvigatelining elektromexanik xarakteristikasi quyidagicha tuziladi: n_D^np=f(I_D) va M_D^np=f(I_D). Ular quyidagi tartibda navbatma-navbat amalga oshiriladi.

1. 
   namunadagi teplovoz yuk tortish dvigateli tokining bir necha ko‘rsatkichlari qo‘yiladi. I_D^ayl.
   
2. 
   namunadagi teplovoz yuk tortish elektrodvigatelining elektromexanik xarakteristikasi bo‘yicha qabul qilingan I_d^ayl uchun n_D^np=f(I_D) va M_D^np=f(I_d)tanlanadi.
   
3. 
   Berilgan I_D^ayl ko‘rsatkich uchun 9, 10, 11 tenglamalardan foydalangan holda I_D^pr M_D^pr n_D^pr lar aniqlanadi.
   
4. 
   yuk tortuvchi elektrodvigatel yakorining aylanish chastotasi ish diapazoni va uchchala ish rejimi uchun operatsiyalar bajariladi.
   

Yuqorida keltirilgan uslubning qo‘llanilishi bo‘yicha misol keltiramiz:
I_D^ayl=600A; α_pr=α_ayl; V_p^pr=11,4km/s; R_D^pr=131,1kVt; µ_p^pr=4,62; D_K^pr=D_K^ayl=1,05mm; µ_p ^ayl=4,61; V_p^ayl=11,4km/s; R_D^ayl=207kVt.
Bundan kelib chiqadiki:


n_D^pr = μpr*n_D^ayl/μayl=1.01nDayl


M_D^pr=α_pr *460^l *M_D^ayl/(α_ayl *450*4)=1.02*M_D^ayl


I_D^pr=460*I_D^ayl/450=1.02Dayl

To‘liq maydon PP:

n_D^pr=1406.8 min^-1 ; bo‘lganda n_D^pr=1,01*1406.8=1420.868 min^-1
n_D^pr=1044.7 min^-1 ; bo‘lganda n_D^pr=1,01*1044.7=1055.147 min^{- 1}
n_D^pr=741min^-1 ; bo‘lganda n_D^pr=1,01*741=748.41 min^-1
n_D^pr=496.3 min^-1 ; bo‘lganda n_D^pr=1,01*496.3=501.263 min^-1
n_D^pr=310 min^-1 ; bo‘lganda n_D^pr=1,01*310=313.1 min^-1
n_D^pr=182.3 min^-1 ; bo‘lganda n_D^pr=1,01*182.3=183.3 min^-1
n_D^pr=113.2 min^-1 ; bo‘lganda n_D^pr=1,01*113.2=114.332 min^-1
n_D^pr=102.7min^-1 ; bo‘lganda n_D^pr=1,01*102.7=103.727 min^-1

Kuchsizlangan maydon OP1:

n_D^pr=2183.4 min^-1 ; bo‘lganda n_D^pr=1,01*2183.4 =2205.2 min^-1
n_D^pr=1628.6 min^-1 ; bo‘lganda n_D^pr=1,01*1628.6 =1644.88 min^{- 1}
n_D^pr=1168.6 min^-1 ; bo‘lganda n_D^pr=1,01*1168.6 =1180.286 min^-1
n_D^pr=803.4 min^-1 ; bo‘lganda n_D^pr=1,01*803.4=811.433 min^-1
n_D^pr=533 min^-1 ; bo‘lganda n_D^pr=1,01*533=538.33 min^-1
n_D^pr=357.4 min^-1 ; bo‘lganda n_D^pr=1,01*357.4=360.974 min^-1
n_D^pr=276.6 min^-1 ; bo‘lganda n_D^pr=1,01*276.6 =276.6 min^-1
n_D^pr=290.6 min^-1 ; bo‘lganda n_D^pr=1,01*290.6 =293.5 min^-1

Kuchsizlangan maydon OP2:

n_D^pr= 3216 min^-1 ; bo‘lganda n_D^pr=1,01*3216=3248.16 min^{- 1}
n_D^pr= 2452.5 min^-1 ; bo‘lganda n_D^pr=1,01*2452.5 =2477 min^{- 1}
n_D^pr= 1808 min^-1 ; bo‘lganda n_D^pr=1,01*1808=1826.08 min^{- 1}
n_D^pr= 1282.5 min^-1 ; bo‘lganda n_D^pr=1,01*1282.5=1295.3 min^{- 1}
n_D^pr= 876 min^-1 ; bo‘lganda n_D^pr=1,01*876=884.76 min^{- 1}
n_D^pr= 588.5 min^-1 ; bo‘lganda n_D^pr=1,01*588.5=594.385 min^{- 1}
n_D^pr= 420 min^-1 ; bo‘lganda n_D^pr=1,01*420 =424.2 min^{- 1}
n_D^pr= 370.5 min^-1 ; bo‘lganda n_D^pr=1,01*370.5=374.2 min^{- 1}

To‘liq maydon PP:

M_D^ayl = 3.1 kN·m; bo‘lganda M_D^pr = 1.02*3.1= 3.162 kN·m;
M_D^ayl = 4.18 kN·m; bo‘lganda M_D^pr = 1.02*4.18= 4.2636 kN·m;
M_D^ayl = 5.89 kN·m; bo‘lganda M_D^pr = 1.02*5.89= 6.0078 kN·m;
M_D^ayl = 8.8 kN·m; bo‘lganda M_D^pr = 1.02*8.8 = 8.976 kN·m;
M_D^ayl =14 kN·m; bo‘lganda M_D^pr = 1.02*14 = 14.28 kN·m;
M_D^ayl = 23.97 kN·m; bo‘lganda M_D^pr = 1.02*23.97 = 24.4494 kN·m;
M_D^ayl = 38.6 kN·m; bo‘lganda M_D^pr =1.02*38.6= 39.372 kN·m;
M_D^ayl = 42.55 kN·m; bo‘lganda M_D^pr =1.02*42.55= 43.401 kN·m;

Kuchsizlangan maydon OP1:

M_D^ayl = 2 kN·m; bo‘lganda M_D^pr = 1.02*2= 2.04 kN·m;
M_D^ayl = 2.68 kN·m; bo‘lganda M_D^pr = 1.02*2.68= 2.7336 kN·m;
M_D^ayl = 3.73 kN·m; bo‘lganda M_D^pr = 1.02*3.73= 3.8046 kN·m;
M_D^ayl = 5.43 kN·m ; bo‘lganda M_D^pr = 1.02*5.43= 5 5386 kN·m;
M_D^ayl = 8.19 kN·m; bo‘lganda M_D^pr = 1.02*8.19= 8.3538 kN·m;
M_D^ayl = 12.22 kN·m; bo‘lganda M_D^pr = 1.02*12.22 = 12.4644 kN·m;
M_D^ayl = 15.7 kN·m; bo‘lganda M_D^pr = 1.02*15.7 = 16.014 kN·m;
M_D^ayl = 15.03 kN·m; bo‘lganda M_D^pr = 1.02*15.03 = 15.33 kN·m;

Kuchsizlangan maydon OP2:

M_D^ayl =1.35 kN·m; bo‘lganda M_D^pr = 1.02*1.35 = 1.377 kN·m;
M_D^ayl = 1.78 kN·m; bo‘lganda M_D^pr = 1.02*1.78= 1.8156 kN·m;
M_D^ayl =2.41 kN·m; bo‘lganda M_D^pr = 1.02*2.41= 2.45 kN·m;
M_D^ayl = 3.4 kN·m; bo‘lganda M_D^pr = 1.02*3.4 = 3.468 kN·m;
M_D^ayl = 4.988 kN·m; bo‘lganda M_D^pr = 1.02*4.988 = 5.8077 kN·m;
M_D^ayl = 7.42 kN·m; bo‘lganda M_D^pr = 1.02*7.42 = 7.5684 kN·m;
M_D^ayl = 10.4 kN·m; bo‘lganda M_D^pr = 1.02*10.4 = 10.608 kN·m;
M_D^ayl = 11.79 kN·m; bo‘lganda M_D^pr = 1.02*11.79 = 12.0258 kN·m;


I_D^ayl = 600 А; I_D^pr = 1.02·600 =612 А.
I_D^ayl = 700 А; I_D^pr = 1.02·700 =714 А.
I_D^ayl = 800 А; I_D^pr = 1.02·800 = 816 А.
I_D^ayl = 900 А; I_D^pr = 1.02·900 = 918 А.
I_D^ayl = 1000 А; I_D^pr = 1.02·1000 = 1020 А.
I_D^ayl = 1100 А; I_D^pr = 1.02·1100 = 1124 А.
I_D^ayl = 1200 А; I_D^pr = 1.02·1200 = 1226 А.
I_D^ayl = 1300А; I_D^pr = 1.02·1300 = 1328 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^prh_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:
To‘liq maydon PP:
M_D = 1,55 kN·m; F_D1 = 2·4,62·1,55·0,975 / 1,05 = 13,30 kN;
M_D = 1,96 kN·m; F_D1 = 2·4,62·1,96·0,975 / 1,05 = 16,82 kN;
M_D = 2,49 kN·m; F_D1 = 2·4,62·2,49·0,975 / 1,05 = 21,36 kN;
M_D = 3,21 kN·m; F_D1 = 2·4,62·3,21·0,975 / 1,05 = 27,54 kN;
M_D = 4,13 kN·m; F_D1 = 2·4,62·4,13·0,975 / 1,05 = 35,44 kN;
M_D = 5,14 kN·m; F_D1 = 2·4,62·5,14·0,975 / 1,05 = 44,10 kN;
M_D = 5,96 kN·m; F_D1 = 2·4,62·5,96·0,975 / 1,05 = 51,14 kN;
M_D = 6,18 kN·m; F_D1 = 2·4,62·6,18·0,975 / 1,05 = 53,02 kN.

Kuchsizlangan maydon OP1:

M_D = 1,06 kN·m; F_D2 = 2·4,62·1,06·0,975 / 1,05 = 9,09 kN;
M_D = 1,28 kN·m; F_D2 = 2·4,62·1,28·0,975 / 1,05 = 10,98 kN;
M_D = 1,56 kN·m; F_D2 = 2·4,62·1,56·0,975 / 1,05 = 13,38 kN;
M_D = 1,93 kN·m; F_D2 = 2·4,62·1,93·0,975 / 1,05 = 16,56 kN;
M_D = 2,34 kN·m; F_D2 = 2·4,62·2,34·0,975 / 1,05 = 20,08 kN;
M_D = 2,78 kN·m; F_D2 = 2·4,62·2,78·0,975 / 1,05 = 23,85 kN;
M_D = 3,16 kN·m; F_D2 = 2·4,62·3,16·0,975 / 1,05 = 27,11 kN;
M_D = 3,36 kN·m; F_D2 = 2·4,62·3,36·0,975 / 1,05 = 28,83 kN.

Kuchsizlangan maydon OP2:

M_D =0,68 kN·m; F_D3 = 2·4,62·0,68·0,975 / 1,05 = 5,83 kN;
M_D =0,85 kN·m; F_D3 = 2·4,62·0,85·0,975 / 1,05 = 7,29 kN;
M_D =1,06 kN·m; F_D3 = 2·4,62·1,06·0,975 / 1,05 = 9,09 kN;
M_D =1,32 kN·m; F_D3 = 2·4,62·1,32·0,975 / 1,05 = 11,33 kN;
M_D =1,60 kN·m; F_D3 = 2·4,62·1,60·0,975 / 1,05 = 13,73 kN;
M_D =1,85 kN·m; F_D3 = 2·4,62·1,85·0,975 / 1,05 = 15,87 kN;
M_D =1,95 kN·m; F_D3 = 2·4,62·1,95·0,975 / 1,05 = 16,73 kN;
M_D =1,88 kN·m; F_D3 = 2·4,62·1,88·0,975 / 1,05 = 16,13 kN.

To‘liq maydon PP:

n_D = 795,1 min^-1; V_D1 = 60·3,14·1,05·795,1 / 1000·4,62= 34,04 km/s;
n_D = 632,7 min^-1; V_D1 = 60·3,14·1,05·632,7 / 1000·4,62= 27,09 km/s;
n_D = 496,1 min^-1; V_D1 = 60·3,14·1,05·496,1 / 1000·4,62= 21,24 km/s;
n_D = 385,3 min^-1; V_D1 = 60·3,14·1,05·385,3 / 1000·4,62= 16,50 km/s;
n_D = 300,3 min^-1; V_D1 = 60·3,14·1,05·300,3/ 1000·4,62= 12,86 km/s;
n_D = 241,1 min^-1; V_D1 = 60·3,14·1,05·241,1 / 1000·4,62= 10,32 km/s;
n_D = 207,8 min^-1; V_D1 = 60·3,14·1,05·207,8 / 1000·4,62= 8,90 km/s;
n_D = 200,3 min^-1; V_D1 = 60·3,14·1,05·200,3 / 1000·4,62= 5,58 km/s.

Kuchsizliangan maydon OP1:

n_D = 1169,9 min^-1; V_D2 = 60·3,14·1,05·1169,9/1000·4,62= 50,10 km/s;
n_D = 963,6 min^-1; V_D2 = 60·3,14·1,05·963,6/1000·4,62= 41,26 km/s;
n_D = 787,9 min^-1; V_D2 = 60·3,14·1,05·787,9/1000·4,62= 33,74 km/s;
n_D = 642,9 min^-1; V_D2 = 60·3,14·1,05·642,9/1000·4,62= 27,53 km/s;
n_D = 528,5 min^-1; V_D2 = 60·3,14·1,05·528,5/1000·4,62= 22,64 km/s;
n_D = 444,7 min^-1; V_D2 = 60·3,14·1,05·444,7/1000·4,62= 19,02 km/s;
n_D = 391,5 min^-1; V_D2 = 60·3,14·1,05·391,5/1000·4,62= 16,76 km/s;
n_D = 369,0 min^-1; V_D2 = 60·3,14·1,05·369,0/1000·4,62= 15,80 km/s.

Kuchsizliangan maydon OP2:

n_D = 1810.8 min^-1; V_D3 = 60·3,14·1,25·1810,8 / 1000·4,62 = 77,54 km/s;
n_D = 1456,9 min^-1; V_D3 = 60·3,14·1,25·1456,9 / 1000·4,62= 62,38 km/s;
n_D = 1166,1 min^-1; V_D3 = 60·3,14·1,25·1166,1 / 1000·4,62= 49,93 km/s;
n_D = 938,4 min^-1; V_D3 = 60·3,14·1,25·938,4 / 1000·4,62= 40,18 km/s;
n_D = 773,7 min^-1; V_D3 = 60·3,14·1,25·773,7 / 1000·4,62= 33,13 km/s;
n_D = 672,2 min^-1; V_D3 = 60·3,14·1,25·672,2 / 1000·4,62= 28,78 km/s;
n_D = 633,6 min^-1; V_D3 = 60·3,14·1,25·633,6 / 1000·4,62= 27,13 km/s;
n_D = 658,2 min^-1; V_D3 = 60·3,14·1,25·658,2 / 1000·4,62= 28,18 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