Design and Stability Analysis of a Discrete-time Sliding Mode Control for a Synchronous DC-DC Buck Converter

Deylamani, Mahnaz Janipoor; Amiri, Parviz; Refan, Mohammad Hossein

doi:10.1007/s12555-017-9793-y

Cited by 14 publications

(3 citation statements)

References 38 publications

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“…To keep the simplicity of these controllers and improve their dynamics, adaptive mechanism have been used for PID-Based techniques for higher efficiency. Some of the main techniques used to optimize the PID-based controllers are as follows: Sliding-Mode PID scheme [10,11], Fuzzy-PID technique [12][13][14] , Fractional-order PID controllers [15,16] , and Neural PID techniques [17,18]. All of these methods exhibit improved control, greater robustness against disruptions and uncertainty, and better acclimatisation to the unpleasant conditions.…”

Section: Introductionmentioning

confidence: 99%

Lyapunov-Based PID controller design for Buck converter with Real-time Implementation

khandan,

Delshad,

Jafari

et al. 2023

Preprint

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This paper presents a Lyapunov-based model reference controller for Buck converter operating under harmful disturbances. This strategy is an advanced version of the tuning method utilising Lyapunov stability function to reach a higher stability and a better disturbance rejection behavior in the practical applications. In addition, to reduce the computational burden and increase ease of implantation, Black-box technique is considered assuming no accurate mathematical model for the system. Lyapunov stability theory is used to enhance and tune the PID gain of this method with an adaptive mechanism while taking into account the real-time condition of a converter with regular changes. For this gain-based controller, an adaptive mechanism based on the Lyapunov concept is proposed, which can improve the stability and resilience of the system under various disturbances, particularly noise. Moreover, a Fuzzy-based PID controller and a PID technique with Particle swarm Optimization (PSO) algorithm are designed and compared with the presented Lyapunov-based technique. MATLAB\Simulink is utilized to examine the results of this improved controller. Additionally, this method produces better results in real-time contexts with faster dynamics and better frequency adaptation.

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Section: Introductionmentioning

confidence: 99%

Lyapunov-Based PID controller design for Buck converter with Real-time Implementation

khandan,

Delshad,

Jafari

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…In those applications where the desired output voltage is smaller than the input voltage a common choice is the buck converter. Because of the nonlinear and time-varying structure of the buck converters owing to their switching operation, the design procedure of highperformance controller for these systems is a challenging topic [5][6][7][8]. The main objective of the control method is to confirm the stability of the system in the arbitrary condition with satisfactory dynamic response in the presence of load variations, parametric uncertainties and external disturbances.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Global Sliding Mode Controller Design for Perturbed DC-DC Buck Converters

et al. 2021

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This paper proposes a novel adaptive intelligent global sliding mode control for the tracking control of a DC-DC buck converter with time-varying uncertainties/disturbances. The proposed control law is formulated using a switching surface that eliminates the reaching phase and ensures the existence of the sliding action from the start. The control law is derived based on the Lyapunov stability theory. The effectiveness of the proposed approach is illustrated via high-fidelity simulations by means of Simscape simulation environment in MATLAB. Satisfactory tracking accuracy, efficient suppression of the chattering phenomenon in the control input, and high robustness against uncertainties/disturbances are among the attributes of the proposed control approach.

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“…Currently, the researches on SMC are mainly focused on DC‐DC application. For buck converter, the sliding‐mode control with first‐order and second‐order SSs are discussed in Tan et al 7 and Leung and Chung 5 Ordonez et al, 5,8 respectively; in Leung and Chung 9 the dynamic performances of sliding‐mode control with first‐order and second‐order SSs are compared; in previous studies, 10,11 the design and stability analysis of digital sliding‐mode control are discussed; in other works, 12‐15 several sliding‐mode control methods with fixed switching frequency are discussed; in Li and Wu, 16 the influence of some nonideal factors on the dynamic performance of sliding‐mode control is analyzed; in other studies, 17,18 the quasi‐sliding‐mode control strategy based on pulse width modulation (PWM) technique is discussed. The application of SMC in boost converter is discussed in pevious studies 19‐23 .…”

Section: Introductionmentioning

confidence: 99%

Digital current‐limited sliding‐mode control for synchronous buck converter with curved switching surface

2020

Circuit Theory & Apps

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Summary In this paper, a digital current‐limited sliding‐mode control (DCLSMC) for synchronous buck converter with curved switching surface is proposed. First, by discretizing the derivatives of a hybrid switching surface (SS) (consisting of second‐order and first‐order SS) and utilizing the reaching law method, a discrete‐time sliding‐mode control (SMC) is derived. Then, this SMC is integrated with a current‐limited control to construct the DCLSMC. Simulation results show that it can provide a current‐limited near‐time‐optimal dynamic response. The proposed SMC is implemented by pulse‐width modulation (PWM) technique, so it can provide a fixed switching frequency and has a low sampling requirement. The reachability of the SS for the proposed SMC and the stability of the quasi‐sliding mode motion is proven. Moreover, an additional PI control is introduced to eliminate the steady‐state error, and some implementation issues are discussed. Experimental results are given to verify the high dynamic performance and practical value of the proposed method.

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Design and Stability Analysis of a Discrete-time Sliding Mode Control for a Synchronous DC-DC Buck Converter

Cited by 14 publications

References 38 publications

Lyapunov-Based PID controller design for Buck converter with Real-time Implementation

Lyapunov-Based PID controller design for Buck converter with Real-time Implementation

Adaptive Global Sliding Mode Controller Design for Perturbed DC-DC Buck Converters

Digital current‐limited sliding‐mode control for synchronous buck converter with curved switching surface

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