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Расчет разветвленной магнитной цепи постоянного тока Содержание расчетнографической работы

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Расчетно-графическая работа :

«Расчет разветвленной магнитной цепи постоянного тока»

Содержание расчетно-графической работы 

  1.  Для заданной магнитной цепи графически  определить:

а) магнитные потоки и индукцию во всех участках;

б) напряженность магнитного поля на всех участках;

в) падение магнитного напряжения на каждом из участков, включая воздушные зазоры.

  1.  Проверить достоверность расчета при помощи законов Кирхгофа.
  2.  Проверить баланс энергии магнитного поля.
  3.  Рассчитать тяговую силу электромагнита.
  4.  Результаты расчетов занести в таблицу ответов на титульном листе.

Толщина  сердечников  электромагнита   во всех  вариантах  h = 5 см.   

Шифр задания состоит из трех чисел:

         первое            соответствует варианту магнитной цепи;

         второе    —       соответствует  номеру  строки   из табл. 1;

         третье          соответствует номеру  строки   из табл. 2.

            Основные кривые намагничивания материалов сердечника

 H,А/м

0

40

 80

120

160

200

600

1000

1400

1800

2200

6000

8000

1200

2000

Значения магнитной индукции В, Тл

Сталь

 Э11

0

0,12

0,4

0,63

0,8

0,95

1,29

1,44

1,52

1,58

1,6

1,62

1,7

1,84

1,98

 Сталь

 Э31

0

0,2

0,52

0,74

0,88

0,98

1,24

1,38

1,46

1,51

1,52

1,6

1,67

1,76

1,9

 Сталь

Э42

0

0,31

0,6

0,79

0,93

1,04

1,2

1,32

1,4

1,48

1,5

1,54

1,61

1,72

1,85

 Сталь

 Э45

0

0,44

0,65

0,83

0,95

1,05

1,26

1,38

1,4

1,42

1,42

1,5

1,58

1,68

1,81

                                             

Таблица  ответов

Поток, Вб

Тяговая

сила  F, Н

Энергия

Wм, Дж

Погрешность

расчёта, %

Ф1

Ф2

Ф3

                       Таблица 1                           Таблица 2

№       

п.п.

а,

см

в,

см

с,

см

 δ,

см

 1

65

20

9

0,20

 2

82

30

12

0,15

 3

70

34

10

0,12

 4

50

52

6

0,10

 5

85

42

11

0,15

 6

55

28

8

0,10

 7

68

15

9

0,14

 8

68

40

8

0,20

 9

20

25

3

0,08

10

35

22

4

0,09

11

62

16

9

0,18

12

64

54

8

0,12

13

38

42

5

0,25

14

66

18

9

0,20

15

45

26

6

0,05

16

35

25

4

0,10

17

28

35

3

0,12

18

66

20

9

0,15

19

88

30

12

0,20

20

56

50

7

0,30

21

98

20

14

0,50

22

70

30

9

0,40

23

60

45

8

0,35

24

80

50

10

0,45

25

60

50

8

0,20

п.п.

Сталь

      F1

      F2

     F3

I1, A

w1

I2, A

w2

I3, A

w3

1

Э11

 1

500

1,5

1000

 1

1000

2

Э31

 2

500

2,5

1000

 2

1000

3

Э42

 3

500

3,5

1000

 3

1000

4

Э45

 4

500

4,5

1000

 4

1000

5

Э11

 5

500

 4

1200

 5

1000

6

Э31

 4

500

 3

1200

 4

1000

7

Э42

 3

500

 2

1000

 3

1000

8

Э45

 2

500

 1

1100

 2

1200

9

Э11

 1

500

1,5

1200

 1

1100

10

Э31

1,5

500

 2

1000

 1

1000

11

Э42

2,5

500

 3

1150

 2

1000

12

Э45

3,5

500

 4

1200

 3

1150

13

Э11

4,5

500

 5

1000

 4

1200

14

Э31

5,5

500

 4

1100

 5

1100

15

Э42

4,5

500

 3

1150

 5

1000

16

Э45

 4

500

 2

1200

 4

1150

17

Э11

3,5

500

 1

1100

 3

1200

18

Э31

 3

500

1,5

1000

 2

1500

19

Э42

2,5

500

 2

1100

 1

1400

20

Э45

 2

500

 2

1000

 1

1300

21

Э11

1,5

500

 2

1500

 2

1350

22

Э31

 1

500

 1

1400

 3

1500

23

Э42

 2

500

 2

1300

 4

1000

24

Э45

 3

500

 3

1000

 5

1200

25

Э11

 4

500

 4

1250

 3

1100

Варианты магнитных цепей

№ 1                                                                 № 2

 а  в                                в

 

 с                                                              с

                    с                                       с

   с                                       с                     F2

     в

 2с а

            F1                    F2   

 

                                                             F3

                                                                                              

                              с с  

                                                                                             

     

                                                                                                                                 

                       № 3                                                               № 4

                    а                                                     в                                в

        

                с                                                               с      

 с

                     с                  с         в        с                                     F2                                                                                                                                                        F1         F2                                                                                                            с

                                                     а                                                                          а    а                                                                          с                                                                                                                                                   

  

                                                                                                             F3

                                                                                                          

                                                    с                          с

                                                                    

            

                       № 5                                                          № 6

            2с                                            2с                                       

                                                                                                                        

                     F1                           2с                 F1

                                       а                                                                                     а

      2с                                                   2с                                       

2с 

                    F2                                                 F2

                              

           2с                                                     2с                                                                      

           в                        с                             в                                        в

                                                                                      

                     № 7                                                              № 8     

         F1         

                                                                              

      2c                                     2с

 

                                                       2с                                                                                                                                    2c                                                                                     F2

                                                                                     

            c                             а        с

                                                         

                  F2 F3 2с

                                                                    

                                                                                                    

      2c 2с

             

                                                                        

                  в                 с                          в                            в

                                                                                        δ

 

                        

                         № 9                                                                № 10

 F1                                                                              F1

                             с                                                        с            

                                                                                с            с

                                                          а         а

 F2                                                       

  с                   с                                                              в/2

      в/2                   с                                                            с

 в                     с                                                     F3

                                                                                                  в                      с

                      № 11                                                               № 12

       в/2                       F1                                        в/2                         F1  

            с                                                               с

                                                                             

                2с                                             с               2с            

                                                                                                                                                                                                                                                                                                                                        c                                                                                                               δ          а

                                  F2             а        F2                                             

                                     F3                                                                  F3 

 

           c                  c

                                                                                                                

                    в                             с                                        в                           с

  

                                     

                            № 13                                                               № 14

                  F1                           F2 

                                                                                                                          

                                    с                                                                                    с                                      

                                                                                 в       с                                   с                                     

                                                                                 2                            F1

             в/2

                                                                            в                               2с

                                             F3

                                                              a                 

                                                                                                                       

     c                          c              

                                                                                                                     F3

                                                                            δ

                                                                            c                            а                                                                                                                                              

                  с                                                                            

                             в                                 c 

                            № 15                                                                    № 16

                 в/2                                                             в/2                      F1

  c                                                             c

        F1   

2c                                          c               2с

                                                                                         

                                           F2      δ                                                                                                                                                               а                        

        с                                                а                                                  F2

                               F3

                                                                                                            

 с                                                           с

 

                            в                           с                                   в                     δ   с       

                                                                                                                 

                                              

                   

  № 17                                                         № 18

                     а                                                   в                      в        

    

              с      F2                                                                        с

      с                             с     F3      в

                                                                          

                                                                                                        2с               а

                                                                                                                                

                      2с                                                                                    с

                                                      с            F1

                                                                                                        с

                        № 19                                                               № 20

                                                                        

 а а

                        

 с                                                                     с

       с с                  с              

 в     в

                                                                                  F2                   F3

 F1  F3

 δ

 δ               с                   с                  с   

                                                          с

                                                           

   в

 с

                  № 21                                                         № 22

                     F1

      2с                                                        2с                                          

                                                                                                      

                                                                                                                                               

                                                                                                                           в

 

                                      а                                                                                                    

                                                            

                     2с                                                                                                  δ                                                                                                       

                                                                                                                                                                                                                                                                             

                   F2                                                  F2                F3

 2с                                                                                                                      в

                                                            2с                      с                      2с               

       2с                                                                       

                                                                             2с

                в                      c                                                                             

                                    

              в                        с                                           а

                    № 23                                                           № 24

               а

 с                        с

                2c    

 c                                             

                            F1                                                с     с            в                                                                                                                                      2с

             с                                                                                                                         

 F1           F2

с                                            а             δ

                                                             δ              с                                                                                                                   в

                           F2  

           с

                                                                                              

                 в                   δ    с                      в

                                                                                             

 с

 

 

 

 


 

 




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