Series-Parallel Multiple Integrated Modular Multilevel DC-DC Converter for All-DC Offshore Wind Power System
All-dc offshore wind power system is a promising solution for long distance and high power transmission. This paper proposes a series-parallel multiple integrated modular multilevel dc-dc converter (SPMI-MMC) for all-dc offshore wind power systems to meet its demand for high voltage, high power, and...
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| Veröffentlicht in: | IEEE transactions on power delivery 2024-08, Vol.39 (4), p.2482-2494 |
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| container_title | IEEE transactions on power delivery |
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| creator | Zhao, Peiqi Meng, Yongqing Ge, Mengwei Duan, Ziyue Wang, Xiuli Wang, Jianxue |
| description | All-dc offshore wind power system is a promising solution for long distance and high power transmission. This paper proposes a series-parallel multiple integrated modular multilevel dc-dc converter (SPMI-MMC) for all-dc offshore wind power systems to meet its demand for high voltage, high power, and large-step ratio dc voltage transmission. Different from the traditional isolated dc-dc converter, the submodules (SMs) of the SPMI-MMC adopt the input-parallel-output-series (IPOS) arrangement to achieve a large step ratio. The symmetrical parallel multiple submodule (SPM-SM) is proposed to realize parallel multiple of SMs through coupling reactors (CRs), which not only can enhance the large current operation ability but also can cancel out the nonzero-sequence high frequency harmonics. Considering the cost factor, the simplified full-bridge double submodule (S-FBDSM) is first introduced in dc-dc converter. It is economical and has good bidirectional dc-fault blocking ability. Digital simulation and real time hard-in-loop (HIL) simulation tests are conducted to verify the effectiveness and superiority of the proposed SPMI-MMC. |
| doi_str_mv | 10.1109/TPWRD.2024.3419087 |
| format | Article |
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This paper proposes a series-parallel multiple integrated modular multilevel dc-dc converter (SPMI-MMC) for all-dc offshore wind power systems to meet its demand for high voltage, high power, and large-step ratio dc voltage transmission. Different from the traditional isolated dc-dc converter, the submodules (SMs) of the SPMI-MMC adopt the input-parallel-output-series (IPOS) arrangement to achieve a large step ratio. The symmetrical parallel multiple submodule (SPM-SM) is proposed to realize parallel multiple of SMs through coupling reactors (CRs), which not only can enhance the large current operation ability but also can cancel out the nonzero-sequence high frequency harmonics. Considering the cost factor, the simplified full-bridge double submodule (S-FBDSM) is first introduced in dc-dc converter. It is economical and has good bidirectional dc-fault blocking ability. 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This paper proposes a series-parallel multiple integrated modular multilevel dc-dc converter (SPMI-MMC) for all-dc offshore wind power systems to meet its demand for high voltage, high power, and large-step ratio dc voltage transmission. Different from the traditional isolated dc-dc converter, the submodules (SMs) of the SPMI-MMC adopt the input-parallel-output-series (IPOS) arrangement to achieve a large step ratio. The symmetrical parallel multiple submodule (SPM-SM) is proposed to realize parallel multiple of SMs through coupling reactors (CRs), which not only can enhance the large current operation ability but also can cancel out the nonzero-sequence high frequency harmonics. Considering the cost factor, the simplified full-bridge double submodule (S-FBDSM) is first introduced in dc-dc converter. It is economical and has good bidirectional dc-fault blocking ability. Digital simulation and real time hard-in-loop (HIL) simulation tests are conducted to verify the effectiveness and superiority of the proposed SPMI-MMC.</description><subject>All-dc wind power system</subject><subject>DC power transmission</subject><subject>DC-DC power converters</subject><subject>Digital simulation</subject><subject>Electric power systems</subject><subject>Harmonic analysis</subject><subject>harmonic suppression</subject><subject>High-voltage techniques</subject><subject>large step ratio</subject><subject>MMC dc-dc converter</subject><subject>Modular systems</subject><subject>Offshore</subject><subject>Offshore energy sources</subject><subject>Power transformer insulation</subject><subject>series-parallel multiple</subject><subject>Topology</subject><subject>Voltage control</subject><subject>Voltage converters (DC to DC)</subject><subject>Wind power</subject><subject>Wind power generation</subject><issn>0885-8977</issn><issn>1937-4208</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkE1Lw0AQhhdRsFb_gHgIeE6dzW6ym2NJ_Si0tNhKj2E3mWjKtqm7SaX_3sT04Glg3uedgYeQewojSiF-Wi8375NRAAEfMU5jkOKCDGjMhM8DkJdkAFKGvoyFuCY3zm0BgEMMA2JWaEt0_lJZZQwab96YujwY9Kb7Gj-tqjH35lXeGGX7zOCxxSaJP0m8pNof0dZovaKy3tiYbrkoCvdVWfQ25T73ltVPG69OrsbdLbkqlHF4d55D8vHyvE7e_NnidZqMZ35Ghaj9TIYCI9RKUR7xTGdhDpQyrUCFGmKMdKYKJWOOussDzTXlhShEriWLo4ANyWN_92Cr7wZdnW6rxu7blykDySEUkeQtFfRUZivnLBbpwZY7ZU8phbSzmv5ZTTur6dlqW3roSyUi_iuEImAsZL9vXHSH</recordid><startdate>20240801</startdate><enddate>20240801</enddate><creator>Zhao, Peiqi</creator><creator>Meng, Yongqing</creator><creator>Ge, Mengwei</creator><creator>Duan, Ziyue</creator><creator>Wang, Xiuli</creator><creator>Wang, Jianxue</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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This paper proposes a series-parallel multiple integrated modular multilevel dc-dc converter (SPMI-MMC) for all-dc offshore wind power systems to meet its demand for high voltage, high power, and large-step ratio dc voltage transmission. Different from the traditional isolated dc-dc converter, the submodules (SMs) of the SPMI-MMC adopt the input-parallel-output-series (IPOS) arrangement to achieve a large step ratio. The symmetrical parallel multiple submodule (SPM-SM) is proposed to realize parallel multiple of SMs through coupling reactors (CRs), which not only can enhance the large current operation ability but also can cancel out the nonzero-sequence high frequency harmonics. Considering the cost factor, the simplified full-bridge double submodule (S-FBDSM) is first introduced in dc-dc converter. It is economical and has good bidirectional dc-fault blocking ability. 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| subjects | All-dc wind power system DC power transmission DC-DC power converters Digital simulation Electric power systems Harmonic analysis harmonic suppression High-voltage techniques large step ratio MMC dc-dc converter Modular systems Offshore Offshore energy sources Power transformer insulation series-parallel multiple Topology Voltage control Voltage converters (DC to DC) Wind power Wind power generation |
| title | Series-Parallel Multiple Integrated Modular Multilevel DC-DC Converter for All-DC Offshore Wind Power System |
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