Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections
DC–DC modular multilevel converter (DC–DC MMC) is an attractive candidate for high-voltage DC (HVDC) interconnections since it can provide the required voltage matching, galvanic isolation and flexible power control abilities. The semiconductor loss of such a DC–DC MMC is a major concern for both sy...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-12-01
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| Series: | High Voltage |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/hve.2018.5039 |
| _version_ | 1818338323492503552 |
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| author | Shanshan Zhao Yu Chen Li Peng |
| author_facet | Shanshan Zhao Yu Chen Li Peng |
| author_sort | Shanshan Zhao |
| collection | DOAJ |
| description | DC–DC modular multilevel converter (DC–DC MMC) is an attractive candidate for high-voltage DC (HVDC) interconnections since it can provide the required voltage matching, galvanic isolation and flexible power control abilities. The semiconductor loss of such a DC–DC MMC is a major concern for both system evaluation and parameter design. However, it cannot be measured directly since it is out of the precision range of the high-voltage measuring equipment, and thus, mathematical analysis is considered as a feasible alternative. This paper proposes an accurate off-line loss calculation method for DC–DC MMC modulated by fundamental frequency modulation. Based on the characteristics of the modulation, the switching moments along with the instantaneous voltage and current can be calculated exactly, and the conduction loss and switching loss of each submodule can be expressed in a mathematical way. The calculation results are compared with the simulation results from a comprehensive switched model and show good accuracy performance within a relative error of ± 2% under different operating conditions. |
| first_indexed | 2024-12-13T15:09:17Z |
| format | Article |
| id | doaj.art-510622d760da487d987ee2f642101c8a |
| institution | Directory Open Access Journal |
| issn | 2397-7264 |
| language | English |
| last_indexed | 2024-12-13T15:09:17Z |
| publishDate | 2018-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | High Voltage |
| spelling | doaj.art-510622d760da487d987ee2f642101c8a2022-12-21T23:40:56ZengWileyHigh Voltage2397-72642018-12-0110.1049/hve.2018.5039HVE.2018.5039Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnectionsShanshan Zhao0Yu Chen1Li Peng2Huazhong University of Science and Technology (HUST)Huazhong University of Science and Technology (HUST)Huazhong University of Science and Technology (HUST)DC–DC modular multilevel converter (DC–DC MMC) is an attractive candidate for high-voltage DC (HVDC) interconnections since it can provide the required voltage matching, galvanic isolation and flexible power control abilities. The semiconductor loss of such a DC–DC MMC is a major concern for both system evaluation and parameter design. However, it cannot be measured directly since it is out of the precision range of the high-voltage measuring equipment, and thus, mathematical analysis is considered as a feasible alternative. This paper proposes an accurate off-line loss calculation method for DC–DC MMC modulated by fundamental frequency modulation. Based on the characteristics of the modulation, the switching moments along with the instantaneous voltage and current can be calculated exactly, and the conduction loss and switching loss of each submodule can be expressed in a mathematical way. The calculation results are compared with the simulation results from a comprehensive switched model and show good accuracy performance within a relative error of ± 2% under different operating conditions.https://digital-library.theiet.org/content/journals/10.1049/hve.2018.5039voltage measurementswitching convertorspower controlHVDC power transmissionHVDC power convertorsfrequency modulationmathematical analysisDC-DC power convertorspower transmission controlswitching losssemiconductor loss calculationhigh-voltage DC interconnectionshigh-voltage measuring equipmentconduction lossDC-DC modular multilevel converterHVDC interconnectionsvoltage matchinggalvanic isolationflexible power controlsystem evaluationparameter designoffline loss calculation methodmathematical analysisDC–DC MMCfundamental frequency modulationinstantaneous voltage calculationinstantaneous current calculation |
| spellingShingle | Shanshan Zhao Yu Chen Li Peng Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections High Voltage voltage measurement switching convertors power control HVDC power transmission HVDC power convertors frequency modulation mathematical analysis DC-DC power convertors power transmission control switching loss semiconductor loss calculation high-voltage DC interconnections high-voltage measuring equipment conduction loss DC-DC modular multilevel converter HVDC interconnections voltage matching galvanic isolation flexible power control system evaluation parameter design offline loss calculation method mathematical analysis DC–DC MMC fundamental frequency modulation instantaneous voltage calculation instantaneous current calculation |
| title | Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections |
| title_full | Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections |
| title_fullStr | Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections |
| title_full_unstemmed | Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections |
| title_short | Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections |
| title_sort | semiconductor loss calculation of dc dc modular multilevel converter for hvdc interconnections |
| topic | voltage measurement switching convertors power control HVDC power transmission HVDC power convertors frequency modulation mathematical analysis DC-DC power convertors power transmission control switching loss semiconductor loss calculation high-voltage DC interconnections high-voltage measuring equipment conduction loss DC-DC modular multilevel converter HVDC interconnections voltage matching galvanic isolation flexible power control system evaluation parameter design offline loss calculation method mathematical analysis DC–DC MMC fundamental frequency modulation instantaneous voltage calculation instantaneous current calculation |
| url | https://digital-library.theiet.org/content/journals/10.1049/hve.2018.5039 |
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