Abstract
Due to the hybrid composition of half-bridge submodule (HBSM) and full-bridge sub-module (FBSM) in each phase arm, hybrid modular multilevel converter (MMC) is able to actively adjust the output DC voltage and operate under reduced DC voltage. Sub-module balancing is one of the most concerned issues regarding low DC voltage operation. This paper analyzes the impact of sub-module balancing constraint on the active and reactive power transfer ability of hybrid MMC. The calculation method of the marginal active and reactive power limited by sub-module balancing constraint is presented, considering the characteristics of arm current and arm output voltage. The effect of DC voltage on the feasible operating area is studied. The proposed method can be treated as the empirical formulas to estimate the feasible active and reactive power range.
| Original language | English |
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| Title of host publication | 2018 IEEE Power and Energy Society General Meeting, PESGM 2018 |
| Number of pages | 5 |
| Volume | 2018-January |
| ISBN (Electronic) | 9781538622124 |
| DOIs | |
| Publication status | Published - 29 Jan 2018 |
| Event | 2018 IEEE Power and Energy Society General Meeting, PESGM 2018 - Portland, United States Duration: 5 Aug 2018 → 10 Aug 2018 |
Conference
| Conference | 2018 IEEE Power and Energy Society General Meeting, PESGM 2018 |
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| Country/Territory | United States |
| City | Portland |
| Period | 5/08/18 → 10/08/18 |
Keywords
- analytical analysis
- HVDC transmission
- hybrid MMC
- power operating zone