Robust Voltage Control of a Buck DC-DC Converter: A Sliding Mode Approach

Hamed, Salah Beni; Hamed, Mouna Ben; Sbita, Lassaâd

doi:10.3390/en15176128

Cited by 9 publications

(10 citation statements)

References 59 publications

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“…where: The following step in designing the integral LQR controller is to define Q and R matrices given in Equation (15) where the Q matrix is required to be positive semidefinite, and its dimension is same of (𝐴 𝐴 ).…”

Section: Linear Controllermentioning

confidence: 99%

“…Among nonlinear controllers, the sliding mode controller (SMC) has the most attention in both discrete and continuous forms [15]. SMC has a variable structure in its dynamics, ensures disturbance and uncertainty rejection, and performs robust tracking tasks.…”

Section: Introductionmentioning

confidence: 99%

“…SMC has a variable structure in its dynamics, ensures disturbance and uncertainty rejection, and performs robust tracking tasks. For instance, in the study of Hamed et al [15], a modified SMC is designed for a buck converter, and its performance is compared against different types of linear and nonlinear controllers. The study shows that the proposed modified SMC has superior characteristics and fast dynamics.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear controller for SEPIC with single variable to tune

Haj,

Sood,

Sheir

et al. 2024

Energ. Stor. Conv.

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This work proposes a systematic approach to design a novel integral sliding mode controller (ISMC) for a single-ended primary-inductor converter (SEPIC) with only one tunable parameter where the upper and the lower bounds are derived. The designed surface results in a minimal chattering behaviour at the output voltage as well as at the duty cycle and allows for operating the SEPIC at a fixed switching frequency. The proposed controller can withstand up to a 70% variation in the input voltage and 100% variation on the load side in addition to superior performance for a cold start. The proposed controller and the corresponding mathematical formulation were simulated in a Simulink environment and experimentally tested via a scaled prototype. The proposed controller performance is also compared to a Type-II and integral Linear-Quadratic Regulators (LQR).

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Section: Linear Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nonlinear controller for SEPIC with single variable to tune

Haj,

Sood,

Sheir

et al. 2024

Energ. Stor. Conv.

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“…Conventional controllers are easy to implement, but they are just suitable for linear systems and give slow response to disturbances [11]. A sliding mode controller for the voltage control of DC-DC buck-and-boost converters has been introduced in [12] and [13]. An adaptive PID controller has been presented in [14] and [15].…”

Section: Introductionmentioning

confidence: 99%

Optimized Nonlinear Integral Backstepping Controller for DC–DC Three-Level Boost Converters

et al. 2023

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Multi-level DC-DC converters have been widely used in automotive and other high-power applications. Thus, the control of these multi-level converters is an emerging thematic in power electronics to ensure their proper functioning. This paper provides a novel nonlinear control of a DC-DC three level boost converter (T-LBC) based on a backstepping (BS) technique with an integral action and is optimized using genetic algorithms (GA). Firstly, the average state model of the T-LBC is described. Then, this model is used to design an integral BS controller; nevertheless, the controller parameters are often determined manually, which may degrade the control quality. A genetic algorithm-based optimization method is applied to establish the best controller gains and improve the proposed controller efficiency. The asymptotic stability converter is verified using the Lyapunov method criteria. In order to validate the introduced controller under different scenarios, the Matlab/Simulink environment is used. In addition, it is compared with different controllers such as conventional backstepping, fuzzy logic, and proportional-integral-derivate (PID) controllers under varying references to highlight its performance further. Finally, the designed controller is verified experimentally by implementing it using a dSPACE 1104 control board. The simulation and experimental results show that the optimized integral BS controller presents the best performances in terms of settling time, overshoot and steady-state error.INDEX TERMS Three level boost DC-DC converter, nonlinear control, integral backstepping, genetic algorithms, tuning.MOHAMED BAGHDADI received the B.S. degree in industrial informatics and electronics from Mohammed First University, Oujda, Morocco, in 2015, and the M.S. degree in electrical engineering from Cadi Ayyad University, Marrakesh, Morocco, in 2017, he is currently pursuing the Ph.D. degree in electrical engineering and energy efficiency with the Electrical Systems, Energy Efficiency and Telecommunications Laboratory. His research interests include semiconductor device models, digital signal processing chips, design, control, modeling and simulation of semiconductor device, and hardware in the loop strategy.

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“…However, it is difficult to achieve the high-precision-control requirements of the DC-DC buck converter systems by using conventional linear control methods. Therefore, with the progress of modern nonlinear control, the effective control method has been applied to buck converter systems, e.g., backstepping control [6], sliding mode control [7][8][9], robust control [10,11], and model predictive control [12].…”

Section: Introductionmentioning

confidence: 99%

Generalized Proportional Integral Observer and Kalman-Filter-Based Composite Control for DC-DC Buck Converters

Qiao

Sun

2023

Actuators

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There are uncertainties and disturbances in the DC-DC buck converters system; in terms of actual working conditions, they are often very complex, exhibiting a polynomial form of time series. Therefore, a single controller and an observer that can only estimate slowly varying disturbances will lose their effectiveness. The generalized proportional integral observer can generally be used to estimate the disturbances in the polynomial form of time series, but it is usually necessary to select a high gain to achieve the fast convergence of the observer, which makes it sensitive to measurement noise. Therefore, before designing the controller that needs to estimate information, it is necessary to design a new structure that combines an observer and a Kalman filter. The filter is used for noise filtering, and the observer is used for the online reconstruction of disturbances. This can solve the above problems. Then, the whole control strategy is designed based on backstepping control. Theoretical analysis and experimental verification can effectively illustrate the feasibility and superiority of this strategy.

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Robust Voltage Control of a Buck DC-DC Converter: A Sliding Mode Approach

Cited by 9 publications

References 59 publications

Nonlinear controller for SEPIC with single variable to tune

Nonlinear controller for SEPIC with single variable to tune

Optimized Nonlinear Integral Backstepping Controller for DC–DC Three-Level Boost Converters

Generalized Proportional Integral Observer and Kalman-Filter-Based Composite Control for DC-DC Buck Converters

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