An Improved Sliding Mode Control with Integral Surface for a Modular Multilevel Power Converter

Luo, Bo-Yu; Subroto, Ramadhani Kurniawan; Wang, Changzhi; Lian, Kuo Lung

doi:10.3390/en15051704

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…However, it has been documented that this solution is not the most satisfactory for controlling ac signals, particularly during transients. Therefore, to improve the behavior during transients, various researchers have proposed using other types of controllers, such as nonlinear controllers, e.g., the sliding mode control [9], [10], repetitive control [11]- [13], deadbeat control [14]- [16], model predictive control (MPC) [17]- [19], and artificial intelligence (AI) algorithms [20]- [22].…”

Section: A Current Control Of the Shunt Apfmentioning

confidence: 99%

Finite-Control-Set Model Predictive Control for Single-Phase CHB 5-Level Inverter as an Active Power Filter With Discrete-Time FO-PI DC-Link Controller

Morales-Caporal,

Bonilla-Huerta,

Ordoñez-Flores

et al. 2024

IEEE Access

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This paper presents a finite-control-set model predictive control (FCS-MPC) with fractionalorder proportional-integral (FO-PI) controller to regulate the dc-link voltage of a single-phase cascaded H-bridge (CHB) 5-level inverter working as a shunt active power filter (APF). By using the FCS-MPC scheme in a single-phase CHB multilevel inverter as an APF, it is possible to generate a compensation current that tracks its reference with maximum precision, in addition, it presents a quick dynamic reaction to disturbances. When the compensation current is injected into the electrical system, current harmonic distortions are effectively reduced. To simplify the number of evaluations in the algorithm, the voltages on the dc-link of each H-bridge are equalized by a redundant selection of switching states of the multilevel inverter. The discrete-time model of the single-phase shunt APF, the technique to generate the compensation current reference signal, and the developed FCS-MPC algorithm are explained in detail. Furthermore, to keep the dc-link voltage steady, with minimal disturbance, it is proposed to use a discrete-time FO-PI controller. The effectiveness of the proposed control scheme is investigated in steady-state, as well as dynamic transients caused by sudden load changes. The developed control algorithm is verified through experimental tests conducted on a 5 kVA single-phase CHB 5-level inverter-based shunt APF.INDEX TERMS Discrete-time control systems, finite control set, fractional order control, model predictive control, multilevel converter, shunt active power filter.

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Section: A Current Control Of the Shunt Apfmentioning

confidence: 99%

Finite-Control-Set Model Predictive Control for Single-Phase CHB 5-Level Inverter as an Active Power Filter With Discrete-Time FO-PI DC-Link Controller

Morales-Caporal,

Bonilla-Huerta,

Ordoñez-Flores

et al. 2024

IEEE Access

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“…Hence, this feature is advantageous when the power converter operates in buck and boost modes under line and load disturbances. The SMC technique has widely been used to control several power converter topologies such as buck [1,2], boost [3], quadratic boost [4], buck-boost [5,6], H-bridge [7,8], and multilevel converter [9]. SMC technique is a nonlinear control technique that offers inherent robustness against variations in system parameters, external disturbances, and modeling uncertainties.…”

Section: Introductionmentioning

confidence: 99%

Robust Sliding-Mode Control Design of DC-DC Zeta Converter Operating in Buck and Boost Modes

Al-Baidhani,

Corti,

Reatti

et al. 2023

Mathematics

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This paper presents a new nonlinear control scheme for a pulse-width modulated dc-dc Zeta converter operating in buck and boost modes. The averaged model of the dc-dc power converter is derived, based on which a robust control law is developed using a simplified sliding-mode control technique. The existence and stability conditions are introduced to select proper controller gains that ensure fast output voltage convergence towards reference voltage. A detailed design procedure is provided to realize the control scheme using low-cost discrete components. The proposed control method handles large disturbances, accommodates the non-minimum phase property, and maintains regulated output voltage during step-up and step-down operation modes. The control system also maintains constant switching frequency, improves the transient response, and eliminates the steady-state error at the output voltage. A MATLAB/SIMULINK model is developed to simulate the closed-loop dc-dc Zeta converter in continuous conduction mode and investigate the tracking and regulation performance. The simulation results confirm the robustness and stability of the nonlinear controlled power converter under abrupt line and load variations.

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“…Recently, SMC has appeared as a promising option due to its robustness, easy tuning of controller parameters, fast dynamic response and lack of a need for high computational power [28]. The following are a few recent works on SMC and its applications [29][30][31]. However, in practice, SMC presents an unwanted phenomenon called chattering, which can be reduced using the exponential reaching law (ERL).…”

Section: Introductionmentioning

confidence: 99%

Sliding-Mode Current Control with Exponential Reaching Law for a Three-Phase Induction Machine Fed by a Direct Matrix Converter

Maidana

Medina²,

Rodas³

et al. 2022

Energies

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The direct matrix converter (DMC) is considered to be an exciting power converter topology option for electric motor drives in industrial applications (elevators, hoists and cranes) and applications where size and weight are critical (e.g., the aerospace industry). Several control techniques have been developed to exploit the DMC’s benefits and achieve the desired performance with classic control techniques, such as field-oriented control and direct torque control, and more sophisticated ones, such as model predictive control and sliding mode control (SMC). SMC is attractive due to its robustness and fast response. However, this control strategy suffers from a phenomenon called chattering. Thus, a solution based on the exponential reaching law (ERL) is implemented to resolve this issue. The proposed method was validated using simulation and experimental results from tests on a three-phase induction machine.

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An Improved Sliding Mode Control with Integral Surface for a Modular Multilevel Power Converter

Cited by 7 publications

References 31 publications

Finite-Control-Set Model Predictive Control for Single-Phase CHB 5-Level Inverter as an Active Power Filter With Discrete-Time FO-PI DC-Link Controller

Finite-Control-Set Model Predictive Control for Single-Phase CHB 5-Level Inverter as an Active Power Filter With Discrete-Time FO-PI DC-Link Controller

Robust Sliding-Mode Control Design of DC-DC Zeta Converter Operating in Buck and Boost Modes

Sliding-Mode Current Control with Exponential Reaching Law for a Three-Phase Induction Machine Fed by a Direct Matrix Converter

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