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| Content Provider | IET Digital Library |
|---|---|
| Author | Adam, Grain Philip Alsokhiry, Fahad Abdelsalam, Ibrahim Fletcher, John E. Xu, Lie Turki, Yusuf Al |
| Abstract | This study presents types 1 and 2 hybrid converters with reduced power circuit complexity compared with the mixed cell modular multilevel converter (MC-MMC). The type 1 converter is formed by replacing the director switches of the alternate arm converter by high-voltage (HV) half-bridge (HB) cells rated for half of the dc-link voltage. Also, it resembles special case of MC-MMC, where the entire HB cells of each arm are lumped into a single HV HB cell, with both capacitors of the half- and full-bridge cells are exposed to fundamental current as in the conventional MMC. The upper and lower arms of the type 2 converter resemble a front-to-front connection of two three-phase hybrid cascaded two-level converters, where the cell capacitors of the three-phase two-level converters that act as director switches do not experience fundamental currents. Therefore, the type 2 converter offers compact design compared with type 1 converter and the MC-MMC. The technical viabilities of the proposed hybrid converters are assessed using simulations, with both converters modelled in MATLAB–Simulink using electromagnetic transient simulation approach, considering normal and transient conditions. Experimental results obtained from single-phase type 1 converter confirm the practical viability of the proposed converters. |
| Starting Page | 607 |
| Ending Page | 619 |
| Page Count | 13 |
| ISSN | 17554535 |
| Volume Number | 12 |
| e-ISSN | 17554543 |
| Issue Number | Issue 3, Mar (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/12/3 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5100 |
| Journal | IET Power Electronics |
| Publisher Date | 2018-11-29 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Alternate Arm Converter Bridge Circuit D.C. Transmission High-voltage Half-bridge Cell HVDC Power Converter HVDC Power Transmission Hybrid Converter Topology MC-MMC Mixed Cell Modular Multilevel Converter Power Electronics Power Supply Supervisory Circuit Switching Converter Three-phase Two-level Converter |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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