Electric machines, space vectors, and magnetic field distributions in motion

 

1.     Schematic diagram of a dc machine.

2.     Schematic diagram of a brushless dc motor.

3.     Position control of a dc motor.

4.     Schematic diagram of a wound-rotor induction motor.

5.     Structure of a squirrel-cage induction machine.

6.   Principle of operation of squirrel-cage induction motor and generator.

7.     Behavior of a squirrel-cage induction machine (axial view).

8.  Behavior of a squirrel-cage rotor in a two-pole field (developed view).

 9.  Sinusoidally distributed windings and fields in a three-phase ac machine.

10. Magnetic field distributions due to single-phase excitation.

    11. Air gap flux plot due to three-phase excitation.

12. Sinusoidal space distributions of mmf under balanced three-phase excitation.

13. Motion of space vectors in a three-phase excitation system.

14. Space vector decomposition in the synchronous dq frame.

15. Sinusoidal distributions and corresponding space vector representations.

16. Space vectors for a balanced three-phase sinusoidal signal.

17. Rotary motion of space vectors in various reference frames.

18. Animated phasors of an induction motor (Torque-speed curve).

 19. Volt per Hz speed control of an induction motor.

 20. Motion of space vectors in an induction motor operating with step loads.

21. Schematic diagram of a four-phase 8/6 switched-reluctance motor.

22. Elementary 3-phase round rotor synchronous generator.

          23. Elementary 3-phase 2-pole alternator with corresponding generated voltages.

          24. Synchronization of three-phase ac systems.

          25. Transient stability of a synchronous machine described by voltage space vectors.

          26. Animated phasor diagrams of a synchronous generator (Compounding curve).

          27. Animated phasor diagrams of a synchronous motor (V curve).

          28. Animated phasor diagrams of a synchronous motor (Power-angle curve).

          29. Still images of windings, fields, and steady-state characteristics of electrical machines.

          30. The mathematics of electric machine modeling.

 

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