Abstract
This paper presents a new pulse width modulation (PWM) technique for a high-frequency link Modular Multilevel Converter topology for grid-integrated renewables. The topology generates a multilevel output voltage with low harmonic distortion, increased reliability, and design flexibility due to the modular nature of the converter. A central full-bridge converter is connected to multiple High Frequency Link modules via high frequency transformers. Each module produces its own isolated DC voltage, and modules are inserted or bypassed to synthesize large AC voltages. The proposed PWM technique equalizes module utilization without increasing losses, and retains inherent capacitor voltage balancing. Simulation results using SIMULINK models show that the proposed modulation scheme results in better performance than conventional schemes such as level-shifted carrier PWM, phase-shifted carrier PWM, hybrid schemes or nearest-level modulation.
Original language | English (US) |
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Title of host publication | Proceedings of 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781538693155 |
DOIs | |
State | Published - Jul 2 2018 |
Event | 8th IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018 - Chennai, India Duration: Dec 18 2018 → Dec 21 2018 |
Publication series
Name | Proceedings of 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018 |
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Conference
Conference | 8th IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018 |
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Country/Territory | India |
City | Chennai |
Period | 12/18/18 → 12/21/18 |
Bibliographical note
Publisher Copyright:© 2018 IEEE.
Keywords
- Full-Bridge Converter
- Full-Bridge Rectifier
- High Frequency Transformer
- Modular Multilevel Converter
- Pulse Width Modulation