Low-Switching Frequency Modulation Schemes for Multi-level Inverters

✍ Scribed by A. Rakesh Kumar, T. Deepa, Sanjeevikumar Padmanaban, Jens Bo Holm-Nielsen

• Publisher: CRC Press
• Year: 2020
• Tongue: English
• Leaves: 124
• Category: Library

✦ Synopsis

Multi-level Inverters (MLIs) are widely used for conversion of DC to AC power. This book provides various low-switching frequency (LSF) modulation schemes (conventional and improved), which can be implemented on MLIs. The LSF modulation schemes are implemented to three different MLI topologies to demonstrate their working and aimed at their application to reader invented MLI topologies. Highlighting the advantages of LSF over high-switching frequency (HSF) modulation schemes, the simulations are carried out using MATLAB®/Simulink along with hardware experiments. The practical application of MLIs to renewable energy sources and electric vehicles is also provided at the end of the book. Aimed at researchers, graduate students in Electric Power Engineering, Power Electronics, this book:

Presents detailed overview of most commonly used multi-level invertor topologies.

Covers advantages of low-switching over high-switching frequency scheme.

Includes an exclusive section dedicated for an improved low-switching modulation scheme.

Dedicated chapter on application of renewable energy sources to multi-level invertors and electric vehicles.

Explains all the low-switching frequency modulation schemes.

✦ Table of Contents

Cover
Half Title
Title Page
Copyright Page
Dedication
Contents
Foreword
Preface
Author Biography
Symbols
1. Introduction
1.1. Classical Multilevel Inverter (C-MLI) Topologies
1.1.1. Diode-Clamped MLI
1.1.2. Flying Capacitor-MLI
1.1.3. H-Bridge MLI
1.2. Modular Multilevel Converters
1.2.1. Introduction to Topology
1.2.2. Applications of MMC
2. Low Switching Frequency Modulation Schemes
2.1. High Switching Frequency (HSF) Modulation Schemes
2.2. Low Switching Frequency (LSF) Modulation Schemes
2.3. Advantages of LSF over HSF Modulation Scheme
2.4. Advantages of Nearest Level Modulation Scheme over other LSF Modulation Scheme
2.5. Concept of Modi ed Nearest Level Modulation Scheme (mNLM)
3. Implementation of LSF Modulation Schemes on Cross-Connected Sources based MLI
3.1. Cross-Connected Sources based MLI Topology
3.2. Working Principle of CCS-MLI Topology
3.2.1. Symmetric Con guration
3.2.2. Asymmetric Con gurations
3.3. Simulation Results
3.3.1. Single Phase Symmetric Conguration
3.3.2. Single Phase Asymmetric Congurations
3.3.3. Three Phase Symmetric Conguration
3.4. Experimental Results
3.4.1. Single Phase Symmetric Conguration
3.4.2. Single Phase Asymmetric Congurations
3.5. Conclusion
4. Implementation of LSF Modulation Schemes on Cascaded H-Bridge MLI
4.1. Cascaded H-Bridge MLI Topology
4.2. Working Principle of CHBI Topology
4.2.1. Symmetric Conguration
4.2.2. Asymmetric Congurations
4.3. Simulation Results
4.3.1. Single-phase Symmetric Conguration
4.3.2. Single-phase Asymmetric Congurations
4.3.3. Three Phase Symmetric Conguration
4.4. Experimental Results
4.4.1. Single-phase Symmetric Conguration
4.4.2. Single-phase Asymmetric Congurations
4.5. Conclusion
5. Implementation of LSF Modulation Schemes on Multilevel DC-Link Inverter
5.1. Multilevel DC-Link Inverter Topology
5.2. Working Principle of MLDCLI
5.2.1. Symmetric Conguration
5.2.2. Asymmetric Congurations
5.3. Simulation Results
5.3.1. Single-phase Symmetric Conguration
5.3.2. Single-phase Asymmetric Congurations
5.3.3. Three-phase Symmetric Conguration
5.4. Experimental Results
5.4.1. Single-phase Symmetric Conguration
5.4.2. Single-phase Asymmetric Congurations
5.5. Conclusion
6. Practical Implementation of MLIs in Power Conversion
6.1. MLI applications to Renewable Energy Sources (RES)
6.2. MLI applications in Electric Vehicles (EVs)
6.3. Future Scope of LSF Modulation Schemes for RES and EV applications
Bibliography
Appendices
Appendix A: Firing Angles for the EPM Scheme
Appendix B: Firing Angles for the HEPM Scheme
Appendix C: Firing Angles for the SHE Scheme
Appendix D: Firing Angles for the NLM Scheme
Appendix E: Firing Angles for the mNLM Schemes
Index