A sliding-mode control in a new reference frame for three-phase UPFR with extended control range
This article presents a new switching strategy for a unity power factor rectifier (UPFR) using sliding-mode control (SMC). The traditional SMC in the natural frame suffers from a cross-coupling problem among controllers due to the neutral point voltage. To address this issue, a nonlinear transformat...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| 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:2117/410443 |
| Acceso en línea: | https://hdl.handle.net/2117/410443 https://dx.doi.org/10.1109/TIE.2024.3395795 |
| Access Level: | acceso abierto |
| Palabra clave: | Sliding mode control Nonlinear control Sliding-mode control (SMC) Third-harmonic injection Unity power factor rectifier (UPFR) Control en mode lliscant Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència Àrees temàtiques de la UPC::Informàtica::Automàtica i control |
| Sumario: | This article presents a new switching strategy for a unity power factor rectifier (UPFR) using sliding-mode control (SMC). The traditional SMC in the natural frame suffers from a cross-coupling problem among controllers due to the neutral point voltage. To address this issue, a nonlinear transformation is applied to obtain the voltages and currents in a new 2-D reference frame. Based on the transformed variables, a nonlinear model is derived, and two different sliding-mode surfaces are designed using hysteresis band comparators. The nonlinear transformation is based on a switching strategy that not only avoids the cross-coupling problem but also injects a third harmonic in the control signal, providing an extended control range. As a result, a SMC is designed, providing relevant properties such as output voltage robustness, fast transient response against sudden load changes, and grid-voltage sags. Experimental results are provided to validate the theoretical contributions of this article. |
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