chapter 6 thyristor converterseebag/ee442-chap6.pdfcopyright © 2003 by john wiley & sons, inc....
TRANSCRIPT
![Page 1: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/1.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-1
Chapter 6
Thyristor Converters
• Controlled conversion of ac into dc
![Page 2: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/2.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-2
Thyristor Converters
• Two-quadrant conversion
![Page 3: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/3.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-3
Primitive circuits with thyristors
![Page 4: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/4.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-4
Thyristor Triggering
• ICs available
![Page 5: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/5.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-5
Full-Bridge Thyristor Converters
• Single-phase and three-phase
![Page 6: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/6.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-6
Single-Phase Thyristor Converters
• Two groups with two thyristor each
![Page 7: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/7.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-7
1-Phase Thyristor Converter Waveforms
• Assuming zero ac-side inductance
![Page 8: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/8.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-8
Average DC Output Voltage
• Assuming zero ac-side inductance
![Page 9: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/9.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-9
Input Line-Current Waveforms
• Harmonics, power and reactive power
![Page 10: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/10.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-10
1-Phase Thyristor Converter
• Finite ac-side inductance; constant dc output current
![Page 11: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/11.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-11
Thyristor Converter Waveforms
• Finite ac-side inductance
![Page 12: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/12.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-12
Thyristor Converter: Discontinuous Mode
• This mode can occur in a dc-drive at light loads
![Page 13: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/13.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-13
Thyristor Converter Waveforms
• PSpice-based simulation
![Page 14: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/14.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-14
Thyristor Converter Waveforms: Discontinuous Conduction Mode
• PSpice-based simulation
![Page 15: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/15.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-15
DC Voltage versus Load Current
• Various values of delay angle
![Page 16: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/16.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-16
Thyristor Converters: Inverter Mode
• Assuming the ac-side inductance to be zero
![Page 17: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/17.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-17
Thyristor Converters: Inverter Mode
• Family of curves at various values of delay angle
![Page 18: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/18.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-18
Thyristor Converters: Inverter Mode
• Importance of extinction angle in inverter mode
![Page 19: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/19.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-19
Thyristor Converters: Inverter Mode
• Waveforms at start-up
![Page 20: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/20.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-20
3-Phase Thyristor Converters
• Two groups of three thyristors each
![Page 21: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/21.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-21
3-Phase Thyristor Converter Waveforms
• Zero ac-side inductance; purely dc current
![Page 22: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/22.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-22
DC-side voltage waveforms assuming zero ac-side inductance
![Page 23: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/23.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-23
Input Line-Current Waveform
• Zero ac-side inductance
![Page 24: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/24.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-24
Input line-current waveforms assuming zero ac-side inductance
![Page 25: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/25.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-25
Three-Phase Thyristor Converter
• AC-side inductance is included
![Page 26: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/26.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-26
Current Commutation Waveforms
• Constant dc-side current
![Page 27: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/27.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-27
Input Line-Current Waveform
• Finite ac-side inductance
![Page 28: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/28.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-28
Input Line-Current Harmonics
• Finite ac-side inductance
![Page 29: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/29.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-29
Input Line-Current Harmonics
• Typical and idealized
![Page 30: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/30.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-30
Three-Phase Thyristor Converter
• Realistic load
![Page 31: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/31.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-31
Thyristor Converter Waveforms
• Realistic load; continuous-conduction mode
![Page 32: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/32.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-32
Thyristor Converter Waveforms
• Realistic load; discontinuous-conduction mode
![Page 33: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/33.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-33
Thyristor Inverter
• Constant dc current
![Page 34: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/34.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-34
Thyristor Inverter Waveforms
• Finite ac-side inductance
![Page 35: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/35.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-35
Thyristor Inverter
• Family of curves at various values of delay angle
![Page 36: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/36.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-36
Thyristor Inverter Operation
• Importance of extinction angle
![Page 37: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/37.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-37
Thyristor Converters: Voltage Notching
• Importance of external ac-side inductance
![Page 38: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/38.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-38
Limits on Notching and Distortion
• Guidelines
![Page 39: Chapter 6 Thyristor Converterseebag/EE442-Chap6.pdfCopyright © 2003 by John Wiley & Sons, Inc. Chapter 6 Thyristor Converters 6-39. Title: Ch6.ppt Author: Ned Mohan Created Date:](https://reader033.vdocuments.us/reader033/viewer/2022050716/5e24763eb0e60d4afd6f9a45/html5/thumbnails/39.jpg)
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 6 Thyristor Converters 6-39
Thyristor Converter Representation
• Functional block diagram