Control design of Modular Multilevel Converters in normal and AC fault conditions for HVDC grids
This paper describes a control design strategy of Modular Multilevel Converters (MMC) for High Voltage Direct Current (HVDC) applications to operate during normal and AC fault conditions. First, a steady state analysis of the converter is performed to identify the uses of the current components with...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/109702 |
| Acceso en línea: | https://hdl.handle.net/2117/109702 https://dx.doi.org/10.1016/j.epsr.2017.06.020 |
| Access Level: | acceso abierto |
| Palabra clave: | Electric power transmission HVDC transmission Modular Multilevel Converters Unbalanced operation Voltage-Source Converters. Energia elèctrica -- Transmissió Àrees temàtiques de la UPC::Enginyeria elèctrica |
| Sumario: | This paper describes a control design strategy of Modular Multilevel Converters (MMC) for High Voltage Direct Current (HVDC) applications to operate during normal and AC fault conditions. First, a steady state analysis of the converter is performed to identify the uses of the current components within the control strategy. Based on the initial stationary study, a complete converter control structure is proposed, which enables full control of the MMC internal energy during normal and AC fault conditions. A detailed design procedure is included for the current and energy regulators, in order to be able to ensure a dynamic response under any grid condition. Finally, theoretical developments are validated through simulation results by means of a detailed model in normal operation and during an AC voltage sag. |
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