1. CHAPTER 12
AC Power
Power Electronics

2. Classification of power electronic devices
Figure 12.1
Figure 12.1
12-1

3. Power electric circuits
Table 12.1
Table 12.1
12-2

4. AC-DC converter circuit and waveform
Figure 12.2
Figure 12.2
12-3

5. AC-AC converter circuit and waveform
Figure 12.3
Figure 12.3
12-4

6. DC-DC converter circuit and waveform
Figure 12.4
Figure 12.4
12-5

7. DC-AC converter circuit and waveform
Figure 12.5
Figure 12.5
12-6

8. Zener diode characteristic and voltage regulator circuit
Figure 12.6
Figure 12.6
12-7

9. Practical voltage regulator
Figure 12.8
Figure 12.7
Figure 12.7, 12.8, 12.9
Figure 12.9
12-8

10. Figure 12.10
Figure 12.11
Figure 12.10, 12.11
12-9

11. Limitations of a BJT amplifier
Figure 12.13
Figure 12.13
12-10

12. BJT switching waveforms MOSFET switching waveforms
Figure 12.14
Figure 12.15
Figure 12.14, 12.15
12-11

13. IGBT simplified equivalent circuit
Figure 12.16
Figure 12.16
12-12

14. Rectifier connected to an inductive load
Operation of a freewheeling diode
Figure 12.18
Figure 12.17
Figure 12.17, 12.18
12-13

15. Three-phase diode bridge rectifier
Waveforms and conduction times of three-phase bridge rectifier
Figure 12.20
Figure 12.21
Figure 12.20, 12.21
12-14

16. Thyristor structure and circuit symbol Thyristor i-v characteristic
Figure 12.23
Figure 12.22
Figure 12.22, 12.23
12-15

17. Thyristor two-transistor model
Figure 12.24
Figure 12.24
12-16

18. Controlled rectifier circuit Half-wave controlled rectifier waveforms
Figure 12.25
Figure 12.26
Figure 12.25, 12.26
12-17

19. The four quadrants of an electric drive
Figure 12.33
Figure 12.33
12-18

20. Step-down chopper (buck converter)
DC motor
Step-down chopper (buck converter)
Figure 12.34
Figure 12.35
Figure 12.34, 12.35
12-19

21. Step-down chopper waveforms
Figure 12.36
Figure 12.36
12-20

22. Step-up chopper (boost converter)
Figure 12.37
Figure 12.37
12-21

23. Step-up chopper output voltage waveform (ideal)
Figure 12.38
Figure 12.38
12-22

24. Step-up chopper used for regenerative braking
Figure 12.39
Figure 12.39
12-23

25. Two-quadrant chopper
Figure 12.40
Figure 12.40
12-24

26. Half-bridge voltage source inverter
Half-bridge voltage source inverter waveforms
Figure 12.41
Figure 12.42
Figure 12.41, 12.42
12-25

27. Full-bridge voltage source inverter
Half-bridge voltage source inverter output waveform
Figure 12.43
Figure 12.44
Figure 12.43, 12.44
12-26

28. Three-phase voltage source inverter waveforms
Figure 12.45
Figure 12.46
Figure 12.45, 12.46
12-27