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Simple AC Motors J Pemberton. Best Website on This! icmotors.html

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Presentation on theme: "Simple AC Motors J Pemberton. Best Website on This! icmotors.html"— Presentation transcript:

1 Simple AC Motors J Pemberton

2 Best Website on This! icmotors.html icmotors.html

3 There are two main types Synchronous- a magnet or current carrying coil moving due to a changing magnetic field. Induction- a piece of metal in a changing magnetic field has currents set up in it which then experience a force.

4 Simplest AC Motor To understand this we have to revise the field directions for solenoids. Check you agree with the next few slides

5 Simple AC Motor- first part of cycle N S Look closely at the current directions, Do you agree with the field directions?

6 Simple AC Motor- Make your predictions for the second half of cycle

7 Simple AC Motor- Second half of cycle? N S

8 The north pole will seek out the south poles of the solenoid and visa versa.

9 Simple AC Motor- Now with the magnet N S Which way will the magnet want to go?

10 Simple AC Motor- first part of cycle N S Did you guess correctly?

11 Simple AC Motor- Second half of cycle The field gets switched. N S

12 N S

13 N S

14 Simple AC Motor- Now were back to the beginning. N S Which way will the magnet want to go?

15 Simple AC Motor- An off we go! N S Which way will the magnet want to go?

16 Simple AC Motor- Second half of cycle The field gets switched. N S

17 N S

18 N S

19 N S

20 Simple AC Motor- Now were back to the beginning. N S Which way will the magnet want to go?

21 Simple AC Motor- Now were back to the beginning. N S Which way will the magnet want to go?

22 Simple AC Motor- Now were back to the beginning. N S Which way will the magnet want to go?

23 Simple AC Motor- Now were back to the beginning. N S Which way will the magnet want to go?

24 Simple AC Motor- Second half of cycle The field gets switched. N S

25 N S

26 N S

27 N S

28 N S

29 N S

30 N S

31 AC motors often have more than two solenoids

32 Simple AC Motor- four coils N S S N

33 N S S N

34 N S S N

35 N S S N

36 N S S N

37 N S S N

38 N S S N

39 N S S N

40 N S S N

41 N S S N

42 N S S N

43 N S S N

44 N S


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