Improved control of multi terminal direct current voltage source converters using proportional integral and lead lag controllers
Abstract In this study, control methods for the converter inner current loop of HVDC systems were evaluated by comparing different combinations of PI controllers and lead-lag compensators. The evaluation was performed on a 3-terminal voltage source converter (VSC)-based multi-terminal direct current...
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Nature Portfolio
2025-02-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-89205-8 |
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| author | Youngmin Gong Insu Kim Wonyoung Choi |
| author_facet | Youngmin Gong Insu Kim Wonyoung Choi |
| author_sort | Youngmin Gong |
| collection | DOAJ |
| description | Abstract In this study, control methods for the converter inner current loop of HVDC systems were evaluated by comparing different combinations of PI controllers and lead-lag compensators. The evaluation was performed on a 3-terminal voltage source converter (VSC)-based multi-terminal direct current (MTDC) system using PSCAD/EMTDC transient analysis simulation. The performance was analyzed under three fault conditions. (alternating current) AC-side single line-to-ground fault, (direct current) DC transmission line fault, and converter disconnection). The results showed that connecting a PI controller to the DC link voltage stabilizer and lead-lag compensators to the power source and load achieved optimal performance with an average overshoot of 78% and an average stabilization time of 398 msec. This represents a 26% reduction in settling time and a 42% increase in overshoot compared to the generic PI controller. The performance was compared by scoring and found to be a 40% increase in control performance. This study demonstrates that lead-lag compensators can significantly improve the control performance of VSC-based MTDC systems. |
| format | Article |
| id | doaj-art-e16447ef1dd7484691aa1d502419a4d5 |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-e16447ef1dd7484691aa1d502419a4d52025-08-20T03:07:40ZengNature PortfolioScientific Reports2045-23222025-02-0115112110.1038/s41598-025-89205-8Improved control of multi terminal direct current voltage source converters using proportional integral and lead lag controllersYoungmin Gong0Insu Kim1Wonyoung Choi2Electrical and Computer Engineering, Inha UniversityElectrical and Computer Engineering, Inha UniversityElectrical and Computer Engineering, Inha UniversityAbstract In this study, control methods for the converter inner current loop of HVDC systems were evaluated by comparing different combinations of PI controllers and lead-lag compensators. The evaluation was performed on a 3-terminal voltage source converter (VSC)-based multi-terminal direct current (MTDC) system using PSCAD/EMTDC transient analysis simulation. The performance was analyzed under three fault conditions. (alternating current) AC-side single line-to-ground fault, (direct current) DC transmission line fault, and converter disconnection). The results showed that connecting a PI controller to the DC link voltage stabilizer and lead-lag compensators to the power source and load achieved optimal performance with an average overshoot of 78% and an average stabilization time of 398 msec. This represents a 26% reduction in settling time and a 42% increase in overshoot compared to the generic PI controller. The performance was compared by scoring and found to be a 40% increase in control performance. This study demonstrates that lead-lag compensators can significantly improve the control performance of VSC-based MTDC systems.https://doi.org/10.1038/s41598-025-89205-8Current controlGenetic algorithmHVDC transmissionFaultVoltage source converter |
| spellingShingle | Youngmin Gong Insu Kim Wonyoung Choi Improved control of multi terminal direct current voltage source converters using proportional integral and lead lag controllers Scientific Reports Current control Genetic algorithm HVDC transmission Fault Voltage source converter |
| title | Improved control of multi terminal direct current voltage source converters using proportional integral and lead lag controllers |
| title_full | Improved control of multi terminal direct current voltage source converters using proportional integral and lead lag controllers |
| title_fullStr | Improved control of multi terminal direct current voltage source converters using proportional integral and lead lag controllers |
| title_full_unstemmed | Improved control of multi terminal direct current voltage source converters using proportional integral and lead lag controllers |
| title_short | Improved control of multi terminal direct current voltage source converters using proportional integral and lead lag controllers |
| title_sort | improved control of multi terminal direct current voltage source converters using proportional integral and lead lag controllers |
| topic | Current control Genetic algorithm HVDC transmission Fault Voltage source converter |
| url | https://doi.org/10.1038/s41598-025-89205-8 |
| work_keys_str_mv | AT youngmingong improvedcontrolofmultiterminaldirectcurrentvoltagesourceconvertersusingproportionalintegralandleadlagcontrollers AT insukim improvedcontrolofmultiterminaldirectcurrentvoltagesourceconvertersusingproportionalintegralandleadlagcontrollers AT wonyoungchoi improvedcontrolofmultiterminaldirectcurrentvoltagesourceconvertersusingproportionalintegralandleadlagcontrollers |