Geometric Control and Structure-at-Infinity Control for Disturbance Rejection and Fault Compensation Regarding Buck Converter-Based LED Driver

Jesse Y. Rumbo-Morales, Jair Gómez-Radilla, Gerardo Ortiz-Torres, Felipe D. J. Sorcia-Vázquez, Hector M. Buenabad-Arias, Maria A. López-Osorio, Carlos A. Torres-Cantero, Moises Ramos-Martinez, Mario A. Juárez, Manuela Calixto-Rodriguez, Jorge A. Brizuela-Mendoza and Jesús E. Valdez-Resendiz ()
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Jesse Y. Rumbo-Morales: Computer Science and Engineering Department, University of Guadalajara, Ameca 46600, Mexico
Jair Gómez-Radilla: Computer Science and Engineering Department, University of Guadalajara, Ameca 46600, Mexico
Gerardo Ortiz-Torres: Computer Science and Engineering Department, University of Guadalajara, Ameca 46600, Mexico
Felipe D. J. Sorcia-Vázquez: Computer Science and Engineering Department, University of Guadalajara, Ameca 46600, Mexico
Hector M. Buenabad-Arias: División Académica de Mecánica Industrial, Universidad Tecnológica Emiliano Zapata del Estado de Morelos, Av. Universidad Tecnológica No. 1, Col. Palo Escrito, Emiliano Zapata 62760, Mexico
Maria A. López-Osorio: Natural and Exact Sciences Department, University of Guadalajara, Ameca 46600, Mexico
Carlos A. Torres-Cantero: Tecnológico Nacional de México Campus Colima, Av. Tecnológico # 1, Col. Liberación, Villa de Álvarez 28976, Mexico
Moises Ramos-Martinez: Computer Science and Engineering Department, University of Guadalajara, Ameca 46600, Mexico
Mario A. Juárez: TecNM/ITS Irapuato, Irapuato 36821, Mexico
Manuela Calixto-Rodriguez: División Académica de Mecánica Industrial, Universidad Tecnológica Emiliano Zapata del Estado de Morelos, Av. Universidad Tecnológica No. 1, Col. Palo Escrito, Emiliano Zapata 62760, Mexico
Jorge A. Brizuela-Mendoza: Exact Sciences and Methodologies Department, University of Guadalajara, Ciudad Guzmán 49000, Mexico
Jesús E. Valdez-Resendiz: School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnológico, Monterrey 64700, Mexico

Mathematics, 2024, vol. 12, issue 9, 1-33

Abstract: Currently, various light-emitting diode (LED) lighting systems are being developed because LEDs are one of the most used lighting sources for work environments, buildings, homes, and public roads in terms of some of their applications. Similarly, they have low energy consumption, quick responses, and excellent optimal performance in their operation. However, these systems still need to precisely regulate lighting, maintain stable voltage and current in the presence of faults and disturbances, and have a wide range of operations in the event of trajectory changes or monitoring tasks regarding the desired voltage and current. This work presents the design and application of two types of robust controllers (structure-at-infinity control and geometric control) applied to an LED driver using a buck converter. The controllers aim to follow the desired trajectories, attenuate disturbances at the power supply input, and compensate for faults in the actuator (MOSFET) to keep the capacitor voltage and inductor current stable. When comparing the results obtained with the two controllers, it was observed that both present excellent performance in the presence of constant disturbances. However, in scenarios in which variable faults and path changes are implemented, the structure-at-infinity control method shows an overimpulse of output voltage and current ranging from 39 to 42 volts and from 0.3 to 0.45 A, with a margin of error of 1%, and it can generate a failure in the LED driver using a buck converter. On the other hand, when using geometric control, the results are satisfactory, achieving attenuating constant disturbances and variable faults, reaching the desired voltage (40 v to 35 v) and current (0.3 to 0.25 A) with a margin of error of 0.05%, guaranteeing a system without overvoltages or the accelerated degradation of the components due to magnetic conductivity.

Keywords: LED driver; geometric control; structure-at-infinity control; disturbances and faults (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
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