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| Content Provider | IET Digital Library |
|---|---|
| Author | Amankwah, Emmanuel K. Watson, Alan J. Clare, Jon C. |
| Abstract | The recently proposed parallel hybrid modular multilevel converter is considered to be a low loss, low component count converter with soft switching capability of the ‘main’ H-bridge. The converter has similar advantages to other emerging modular multilevel converter circuits being considered for high-voltage, direct current power transmission and can be made compact which is desirable for offshore application. However, during ac network unbalance the individual ‘chain-links’ (CL) exchange unequal amounts of power with the grid which requires appropriate remedial action. This study presents research into the performance of the converter and proposes a suitable control method that enables the converter to operate during grid voltage unbalance. The proposed control concept involves the use of asymmetric third harmonic voltage generation in the ‘CL’ of the converter to redistribute the power exchanged between the individual ‘CL’ and the grid. Mathematical analysis and simulation modelling with results are presented to support the work described. |
| Starting Page | 3102 |
| Ending Page | 3110 |
| Page Count | 9 |
| ISSN | 17518687 |
| Volume Number | 10 |
| e-ISSN | 17518695 |
| Issue Number | Issue 12, Sep (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/10/12 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2015.0766 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2016-09-02 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | AC Network Unbalance Asymmetric Third-harmonic Voltage Generation Chain-links D.C. Transmission Grid Voltage Unbalance Harmonics High-voltage Direct Current Power Transmission HVDC Power Transmission Low-loss Low-component Count Converter Main H-bridge Mathematical Analysis Modular Multilevel Converter Circuit Offshore Application Offshore Installations Parallel Hybrid Modular Multilevel Converter Power Supply Quality Power System Harmonics Remedial Action Simulation Modelling Soft Switching Capability |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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