Abstract
This paper presents a new pulse width modulation (PWM) technique for a modular multi-level converter (MMC) topology. The presented converter generates a multi-level output voltage with low harmonic distortion, increased reliability, and design flexibility due to the modular nature of the topology. The topology has several sub-modules that can be inserted or bypassed to synthesize large AC voltages. The proposed PWM technique equalizes sub-modules utilization without increasing losses, and retains inherent capacitor voltage balancing. Simulation and hardware results are presented in the paper, which shows that the proposed modulation scheme results in better performance than conventional schemes such as nearest-level modulation, level-shifted carrier PWM, or phase-shifted carrier PWM.
Original language | English (US) |
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Title of host publication | 2022 IEEE 7th Southern Power Electronics Conference, SPEC 2022 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9798350399882 |
DOIs | |
State | Published - 2022 |
Externally published | Yes |
Event | 7th IEEE Southern Power Electronics Conference, SPEC 2022 - Nadi, Fiji Duration: Dec 5 2022 → Dec 8 2022 |
Publication series
Name | 2022 IEEE 7th Southern Power Electronics Conference, SPEC 2022 |
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Conference
Conference | 7th IEEE Southern Power Electronics Conference, SPEC 2022 |
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Country/Territory | Fiji |
City | Nadi |
Period | 12/5/22 → 12/8/22 |
Bibliographical note
Publisher Copyright:© 2022 IEEE.
Keywords
- Cascaded H-bridge
- High-Frequency Transformer
- Modular Multi-Level Converters
- Pulse Width Modulation