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ECE 442Power Electronics

• Text:– Power Electronics: Circuits, Devices, and

Applications– Third Edition– by Muhammed H. Rashid– Pearson Prentice-Hall

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Power Semiconductor Devices

• Diodes• Transistors

– Power BJTs– Power MOSFETs– Insulated-Gate BJT

• IGBT

– Static Induction Transistors

• SITs

• Thyristors– Force-Commutated– Line-Commutated– Gate Turn Off--GTO

– Reverse-Conducting• RCT

– Gate-Assisted Turn-off

• GATI

3

Thyristor/Triac

SCR12N3668

MT12N6346

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Power Electronic Circuits

• Diode Rectifiers (AC to Fixed DC)• AC-DC Converters (Controlled Rectifiers)• AC-AC Converters (AC Voltage Controllers)• DC-DC Converters (DC Choppers)• DC-AC Converters (Inverters)• Static Switches

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Single-Phase Diode Rectifier

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Single-Phase Diode Rectifier

T10.5

D1

DIODE_VIRTUAL

D2

DIODE_VIRTUAL

LOAD

1kOhm

V1

120 V 60 Hz 0Deg

XSC1

A B

G

T

XSC2

A B

G

T

7

Source and Output Voltages

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Single-Phase AC-DC Converter

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Single-Phase AC-DC Converter

T20.5

Vs

120 V 60 Hz 0Deg

Rload

180 Ohm

C20.1uF

XSC1

A B

G

T

C10.1uF

R1

Key = A 18kOhm 50%

R2Key = A 18kOhm

50%

D12N3670

D22N3670

R347 Ohm

R447 Ohm

D41N4007GP

D31N4007GP

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Load Voltage

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Single-Phase AC-AC Converter

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Single-Phase AC-AC Converter

V1

240 V 60 Hz 0Deg

D12N5444

LOAD80kOhm

1 2

0

13

14

DC-DC Converter

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DC-DC Converter

V124 V

L1250uH

D1DIODE_VIRTUAL

R110 Ohm

XSC1

A B

G

T

XFG1

U1DC 1MOhm 13.044 V

+

-

Q1IRG4BC10U

C147uF

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24V-12V Converter Output Voltage

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Single-Phase DC-AC Converter

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Single-Phase DC-AC Converter

Rload

1ohm

D3DIODE_VIRTUAL

D2DIODE_VIRTUAL

XFG1

A BT

G

XSC1

J31V 0V

J21V 0V

V124V

V224V

A BT

G

XSC2

D1DIODE_VIRTUAL

D4DIODE_VIRTUAL

J11V 0V

J41V 0V

XDA1

20

0

51

0

23

00

4

19

Load and Transistor Voltages

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21

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