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РАСЧЕТНАЯ ГРАФИЧЕСКАЯ РАБОТА №1



ВАРИАНТ 4 КОД: 378566

 

                                                                              

 

                                                                  2

 

 

                                             E4                                      E5

         
 
   


                                                                                                                                          I6  R6

                                     

                              I4    R4                                      R5       I5       

 

                                                                          I3

                                                     E3                 R3                                           3                         

                  1 

Jk1                                 E1                                                                           E2                                           E6

 


           Jk2                                                                                                                                                        Jk3

                                                     I1                  I2

                                             R1                                  R2              

 

 

 


                                                                       4

 

1) Определить токи методом контурных токов;

2) Определить всё токи, методом узловых напряжений, приняв потенциал 4-ого узла равен 0;

3) Произвести проверку законов Кирхгофа;

4) Составить баланс мощности;

5) Определить ток I1 методом эквивалентного генератора;

6)

         
   

Начертить в масштабе потенциальную диаграмму для любого контура, включающего в себя две ЭДС;

 


 

 

1) Метод контурных токов.

 

                                                                 2

 

 

                                                                                      

                                                                                          I5   

                                                                             R5                     I6  R6

                                                                   I 11

                                I4   R4                                        

                                                                                              I3

                          1                                                                        3

                                                                  R3                               Е2

                                             I 1

                                                              I22                                                  E6

     


                                      R1                           R2

              Jk1                                                                                                                                                    

                                                                              I2               I33

 


                                                                    4

 

 

I11(R3 + R4 + R5) + I22R3 – I33R5 – Jk1R4 = 0

 I11R3+ I22 (R1 + R2 + R3) + I33R2 + Jk1R1= E2

-I11R5 + I22R2 + I33(R2 + R5 +R6) = E6 + E2

 

 

130 I11 + 80 I22 – 30 I33 –120 = 0

80 I11 + 100 I22 + 10 I33 + 60 = 150

-30 I11 + 10 I22 + 90 I33 = 600

 

 

13 I11 + 8 I22 – 3 I33 = 12        I11 = 6,0339 А

8 I11 + 10 I22 + I33 = 9              I22 = - 4,8488 А

-3 I11 + I22 + 9 I33 = 60            I33 = 9,1167 А

 

 

I1 = -I22 – Jk1 = -1,1512 A

I2 = I22 + I33 = 4,368 А

I3 = I11 + I22 = 1,185 A

I4 = I11 – Jk1 = 0,0339 A

I5 = -I11 + I33 = -3,1828 A

I6 = I33 = 9,2167 A

 

2) Метод узловых потенциалов.

U4= 0 В


 


 

 

 


 

 

 

 

3) Законы Кирхгофа.

I з-н Кирхгофа:

       1: - I1 – I3 + I4 = 0        

             -(-1,1512) – 1,185 + 0,0339=0              

       2: - I4 – I5 + I6 – Jk1 = 0        

             -0,0339 – 3,1828 + 9,2167-6=0              

       3: - I2 + I3 + I5 = 0

             -4,368 + 1,185 + 3,1828=0

I з-н Кирхгофа выполняется.

 

II з-н Кирхгофа:

Для 1 контура: I3R3 + I4R4 – I5R5 = 0        

                            1,185*80 + 0,0339*20 – 3,1828*30 =0   

    2 контура: I1R1 + I2R2 + I3R3 = Е2

                            -1,1512*10 + 4,368*10 + 1,185*80 =150

    3 контура: I2R2 + I5R5 + I6R6 = Е2 + E6        

                             4,368*10 + 3,1828*30 + 9,2167*50 = 600

 II з-н Кирхгофа выполняется.

 

 

4)

 

 Баланс мощности.

I12R1 + I22R2 + I32R3 + I42R4 + I52R5 + I62R6 = E2I2 + E6I6 + Jk1U24     

U24 = -I4R4 – I1R1=10,834 В

E2I2 + E6I6 + Jk1U24 = E2I2 + E6I6 + Jk1*(-I4R4 – I1R1) » 4867,7 Вт

I12R1 + I22R2 + I32R3 + I42R4 + I52R5 + I62R6 » 4867,7 Вт

Баланс мощности выполняется.

 

5) Расчет тока I1 методом эквивалентного генератора.

1) Расчитаем Uxx

 U4=0 ,  Uxx= -U1

 

                               

           

          

 

 

 

Uxx= -47,22 B

 

2) Расчитаем Rхх

     
 


                                                

 

 

 

 

5) Потенциальная диаграмма контура 2-а-4-в-3-2

                                                                 2

 

 

                                                                                      

                                                                                         I5   

                                                                             R5                     I6  R6

                                                             

                                I4   R4                                        

                                                                                              I3

                          1                                                                        3

                                                                  R3                               Е2                  а

                                             I 1

                                                                                                                       E5

                                                                                    в

                                      R1                         R2

              Jk1                                                                                                                                                   

                                                                              I2                   

 


                                                                    4

 

 

φ2= 0;

2-а: φ2 – φа = I6R6 

   φа = -I6R6 = -460,8B

а-4: φа – φ4 = -E6  

   φ4 = φа + E6 = -10,8B

4-в: φ4 – φв = I2R2

   φв = φ4 – I2R2 = -54,5B

в-3: φв – φ3 = -E2

   φ3 = φв + E2 = 95,5B

3-2: φ3 – φ2 = I5R5 

    φ2 = φ3 - I5R5 = 0 B

 

 

МИНИСТЕРСТВО ОБРАЗОВАНИЯ РОССИЙСКОЙ ФЕДЕРАЦИИ

УФИМСКИЙ ГОСУДАРСТВЕННЫЙ АВИАЦИОННЫЙ ТЕХНИЧЕСКИЙ УНИВЕРСИТЕТ

 

 

Кафедра теоретических основ электротехники

 

РАСЧЕТНАЯ ГРАФИЧЕСКАЯ РАБОТА №1

ИССЛЕДОВАНИЕ ЦЕПЕЙ ПОСТОЯННОГО ТОКА

          Выполнил: 

             студент гр. ИСТ-202

             Гизатуллин А.Р.

 

            Приняла:

            преподаватель Крайнова Т.М.

 

 

                                                             УФА 2003

 



  

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