Power Electronics

AC Power

CHAPTER

12

Figure 12.1

12-1

Classification of power electronic devicesFigure 12.1

Table 12.1

12-2

Table 12.1Power electric circuits

Figure 12.2

12-3

AC-DC converter circuit and waveformFigure 12.2

Figure 12.3

12-4

AC-AC converter circuit and waveformFigure 12.3

Figure 12.4

12-5

DC-DC converter circuit and waveformFigure 12.4

Figure 12.5

12-6

DC-AC converter circuit and waveformFigure 12.5

Heat sink construction for voltage regulators

Figure 12.12

Figure 12.7,

12.8, 12.9

12-8

Practical voltage regulator Figure 12.8

Figure 12.9

Figure 12.7

Figure 12.10, 12.11

Figure 12.11Figure 12.10

12-9

Figure 12.13

12-10

Limitations of a BJT amplifierFigure 12.13

Figure 12.14, 12.15

12-11

BJT switching waveforms MOSFET switching waveformsFigure 12.15Figure 12.14

Figure 12.16

12-12

IGBT simplified equivalent circuitFigure 12.16

Figure 12.17, 12.18

12-13

Rectifier connected to an inductive load

Operation of a freewheeling diodeFigure 12.18

Figure 12.17

Figure 12.20, 12.21

12-14

Three-phase diode bridge rectifier

Waveforms and conduction times of three-phase bridge rectifier

Figure 12.21Figure 12.20

Figure 12.22, 12.23

12-15

Thyristor structure and circuit symbol

Thyristor i-v characteristicFigure 12.23

Figure 12.22

Figure 12.24

12-16

Thyristor two-transistor modelFigure 12.24

Controlled rectifier circuitFigure 12.25

Figure 12.26

Half-wave controlled rectifier waveforms

Figure 12.25, 12.26

12-17

Thyristor Circuit

Figure 12.31, 12.32

Figure 12.33

12-18

The four quadrants of an electric driveFigure 12.33

Figure 12.34, 12.35

12-19

DC motorFigure 12.34

Step-down chopper (buck converter)Figure 12.35

Step-down chopper waveforms

Figure 12.36

Figure 12.36

12-20

Figure 12.37

12-21

Step-up chopper (boost converter)

Figure 12.37

Step-up chopper output voltage waveform (ideal)

Figure 12.38

Figure 12.38

12-22

Step-up chopper used for regenerative braking

Figure 12.39

Figure 12.39

12-23

Figure 12.40

12-24

Two-quadrant chopperFigure 12.40

Figure 12.41, 12.42

12-25

Half-bridge voltage source inverter

Half-bridge voltage source inverter waveforms

Figure 12.41 Figure 12.42

Figure 12.43, 12.44

12-26

Full-bridge voltage source inverter

Half-bridge voltage source inverter output waveform

Figure 12.43 Figure 12.44

Figure 12.45, 12.46

12-27

Three-phase voltage source inverter

Three-phase voltage source inverter waveforms

Figure 12.45 Figure 12.46