Abstract
The modular multilevel dc-dc converter (MMDC) has attracted much interest in medium voltage dc applications, but it has to face the main issue of balancing submodule (SM) capacitor voltages. This paper proposes a dual-circulant modulation and mathematically proves it possessing the inherent balancing capability for arbitrary operation cases. Two sets of circular switching patterns are preset and combined to complete the full constrains on SM voltages for balancing, and then reallocated to keep the advantage of SM uniformity. The associated polynomial of circulant matrix is introduced and the coprime of polynomials demonstrates the full-rank feature of the extended switching matrix that promises the inherent balancing. Experiments are conducted on prototype to validate the inherent voltage balancing capability of the dual-circulant modulation.
Original language | English |
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Title of host publication | PEAC 2022 - 2022 IEEE International Power Electronics and Application Conference and Exposition, Proceedings |
Publisher | IEEE |
Pages | 33-38 |
Number of pages | 6 |
ISBN (Electronic) | 9781665491419 |
DOIs | |
Publication status | Published - 7 Nov 2022 |
Event | 3rd IEEE International Power Electronics and Application Conference and Exposition, PEAC 2022 - Xiamen, China Duration: 4 Nov 2022 → 7 Nov 2022 |
Publication series
Name | PEAC 2022 - 2022 IEEE International Power Electronics and Application Conference and Exposition, Proceedings |
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Conference
Conference | 3rd IEEE International Power Electronics and Application Conference and Exposition, PEAC 2022 |
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Country/Territory | China |
City | Xiamen |
Period | 4/11/22 → 7/11/22 |
Bibliographical note
Funding Information:This work was supported in part by the National Key Research and Development Program of China under Grant 2022YFE0101900, in part by the National Natural Science Foundation of China under Grant 52107214, and in part by the Provincial Key Research and Development Program of Inner Mongolia under Grant 2021D0026.
Funding
This work was supported in part by the National Key Research and Development Program of China under Grant 2022YFE0101900, in part by the National Natural Science Foundation of China under Grant 52107214, and in part by the Provincial Key Research and Development Program of Inner Mongolia under Grant 2021D0026.
Keywords
- associated polynomial of circulant matrix
- coprime polynomial
- dual-circulant modulation
- Inherent submodule voltage balancing
- modular multilevel dc converter (MMDC)
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
- Mechanical Engineering
- Safety, Risk, Reliability and Quality
- Electronic, Optical and Magnetic Materials
- Control and Optimization