Transition from periodicity to chaos in a PWM-controlled buck converter with ZAD strategy
The transition from periodicity to chaos in a DC-DC Buck power converter is studied in this paper. The converter is controlled through a direct Pulse Width Modulation (PWM) in order to regulate the error dynamics at zero. Results show robustness with low output error and a fixed switching frequency....
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2005 |
| 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:2117/4031 |
| Acceso en línea: | https://hdl.handle.net/2117/4031 |
| Access Level: | acceso abierto |
| Palabra clave: | Electric current converters DC-DC Buck power converter Pulse Width Modulation (PWM) Convertidors DC-DC Modulació de l'amplada del pols Modulación por ancho de pulsos Convertidores DC-DC Convertidors de corrent elèctric Classificació INSPEC::Convertors::Power convertors::DC-DC power convertors Àrees temàtiques de la UPC::Informàtica::Automàtica i control |
| Sumario: | The transition from periodicity to chaos in a DC-DC Buck power converter is studied in this paper. The converter is controlled through a direct Pulse Width Modulation (PWM) in order to regulate the error dynamics at zero. Results show robustness with low output error and a fixed switching frequency. Furthermore, some rich dynamics appear as the constant associated with the first order error dynamics decreases. Finally, a transition from periodicity to chaos is observed. This paper describes this transition and the bifurcations in the converter. Chaos appears in the system with a stretching and folding mechanism. It can be observed in the one-dimensional Poincaré map of the inductor current. This Poincaré map converges to a tent map with the variation of the system parameter ks. |
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