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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhang, Jianpo Jiang, Chuan Chen, Chongchong |
| Abstract | Although full bridge sub-module topologies require more power devices than half bridge topology, it can offer flexible control of positive, negative, and zero voltage output characteristics. Here, full-bridge MMC with three kinds of operating modes as positive, negative voltage output with low voltage operation, and DC-link fault current suppression with zero voltage output are studied. To deal with the problem of insulation reduction when long-distance overhead line is applied and reduced DC voltage operation is required when LCC is connected with MMC, the effect of constant power and reduced power transmission on the storage capacitor voltage balance are studied. What is more, the zero voltage output characteristic is also studied not only to avoid the problem that the sub-module capacitor voltage may diverge due to long time blocking converter during DC line fault but also to supply reactive power for AC grid. Control strategies are designed under different operating modes to achieve full bridge MMC flexible operation. Finally, a simulation model is built in PSCAD/EMTDC to simulate the output characteristics of full-bridge MMC in different operation modes. |
| Starting Page | 2120 |
| Ending Page | 2124 |
| Page Count | 5 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 16, Mar (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/conferences/cn-adc-2018 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8662 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2018-10-26 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution-Non Commercial-No Derivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/) |
| Subject Keyword | Constant Power Control of Electric Power System Control Strategy D.C. Transmission DC Line Fault DC Voltage Operation DC-link Fault Current Suppression Different Operating Modes Different Operation Modes EMTDC Fault Current Flexible Control Full Bridge MMC Flexible Operation Full Bridge Sub-module Topology Full-bridge MMC Half Bridge Topology HVDC Power Converter HVDC Power Transmission Insulation Reduction Long-distance Overhead Line Low Voltage Operation Negative Voltage Output Output Characteristic Positive Voltage Output Power Capacitor Power Converter Power Device Power Supplies to Apparatus Power Transmission Fault PSCAD Reactive Power Reduced DC Voltage Operation Reduced Power Transmission Storage Capacitor Voltage Balance Sub-module Capacitor Voltage Voltage Control Zero Voltage Output Characteristic |
| Content Type | Text |
| Resource Type | Article |
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