Adaptive and nonlinear control techniques applied to SEPIC converter in DC-DC, PFC, CCM and DCM modes using HIL simulation
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Universidade Federal de Minas Gerais
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In this paper, we propose adaptive nonlinear controllers for the Single-Ended Primary Inductance Converter (SEPIC). We also consider four distinct situations: AC-DC, DC-DC, Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM). A comparative analysis between classic linear and nonlinear approaches to regulate the control loop is made. Three adaptive nonlinear control laws are designed: Feedback Linearization Control (FLC), Passivity-Based Control (PBC) and Interconnection and Damping Assignment Passivity-Based Control (IDAPBC). In order to compare the performance of these control techniques, numerical simulations were made in Software and Hardware in the Loop (HIL) for nominal conditions and operation disturbances. We recommend adaptive controllers for the two different situations: Adaptive Passivity-Based Feedback Linearization Control (APBFLC) for the PFC (Power Factor Correction) AC-DC system and IDAPBC-BB (IDAPBC Based on Boost converter) for the regulator DC-DC system.
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SEPIC; PFC; CCM; DCM; FLC; PBC; IDAPBC; HIL; APBFLC; IDAPBC-BB, Among the possible alternatives to improve the performance of switched sources, a highlight is the use of a DC-DC converter to creation a Power Factor Correction (PFC) system, The intrinsic power factor correction includes SEPIC in a particular group of converters. Hence, the design of the control system derived from the model based on CIECA and the boost converter is satisfactory, revealing that it is possible to obtain high performance controllers using a simplified modeling
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https://www.mdpi.com/1996-1073/11/3/602