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A Novel Combined Control of Ground Current and DC-pole-to-Ground Voltage in Symmetrical Monopole Modular Multilevel Converters for HVDC Applications
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| Author(s) |
Pablo BRIFF |
| Abstract |
This paper investigates the reduction in converter trips in the symmetrical Modular Multilevel Converter (MMC) by regulating the dc term of the valves' voltages, while allowing the dc pole-to-ground dc voltages to fluctuate within acceptable limits. Moreover, the control method proposed in this work serves two purposes: i) to regulate the pole-to-ground dc voltages of a symmetrical Modular MMC when the voltage of either of the poles at the dc side exceeds a predefined threshold; and ii) to control the ground current within acceptable limits. This results in an extended converter availability by avoiding unnecessary converter trips. The benefits of the proposed method is validated by simulation results for a symmetrical monopole MMC VSC-HVDC configuration. |
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| Filename: | 0064-epe2022-full-15543049.pdf |
| Filesize: | 719.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2023-09-24 by System |
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