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

被引:2
作者
Rumbo-Morales, Jesse Y. [1 ]
Gomez-Radilla, Jair [1 ]
Ortiz-Torres, Gerardo [1 ]
Sorcia-Vazquez, Felipe D. J. [1 ]
Buenabad-Arias, Hector M. [2 ,3 ]
Lopez-Osorio, Maria A. [4 ]
Torres-Cantero, Carlos A. [5 ,6 ]
Ramos-Martinez, Moises [1 ]
Juarez, Mario A. [7 ]
Calixto-Rodriguez, Manuela [2 ]
Brizuela-Mendoza, Jorge A. [8 ]
Valdez-Resendiz, Jesus E. [9 ]
机构
[1] Univ Guadalajara, Dept Comp Sci & Engn, Ameca 46600, Mexico
[2] Univ Tecnol Emiliano Zapata Estado Morelos, Div Acad Mecan Ind, Ave Univ Tecnol 1, Emiliano Zapata 62760, Mexico
[3] UAEM, Ctr Invest Ingn & Ciencias Aplicadas CIICAp, Cuernavaca 62209, Mexico
[4] Univ Guadalajara, Nat & Exact Sci Dept, Ameca 46600, Mexico
[5] Tecnol Nacl Mexico Campus Colima, Ave Tecnol 1,Col Liberac, Villa De Alvarez 28976, Mexico
[6] Univ Colima, Fac Ingn Mecan & Elect, Carretera Colima Coquimatlan Km 9, Coquimatlan 28400, Mexico
[7] TecNM ITS Irapuato, Irapuato 36821, Mexico
[8] Univ Guadalajara, Exact Sci & Methodol Dept, Ciudad Guzman 49000, Mexico
[9] Sch Engn & Sci, Tecnol Monterrey, Ave Eugenio Garza Sada 2501 Sur, Monterrey 64700, Mexico
关键词
LED driver; geometric control; structure-at-infinity control; disturbances and faults; SYSTEMS; MODEL; STABILITY; DESIGN;
D O I
10.3390/math12091277
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
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.
引用
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页数:33
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