Super twisting sliding mode control for inner current suppression of Modular Multilevel Converter

Uddin, Waqar; Ishfaq, Muhammad; Zeb, Kamran; Islam, Saif ul; Kim, Sang-Yong; Khan, Muhammad Adil; Ullah, Zahid; Khan, Imran; Jan, Khadim Ullah; Sarwar, Muhammad Asim

doi:10.1109/icomet48670.2020.9073851

Cited by 3 publications

(2 citation statements)

References 32 publications

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“…So the proposed control structure is shown in Figure 5. [13] This controller will perfectly balance the voltage between the arms along with control of inner current of each leg.…”

Section: Modified Sliding Mode Controlmentioning

confidence: 99%

A Modified Sliding Mode Control for Circulating Current Control and Voltage Balancing in Modular Multilevel Converter

Venkatesh¹

2020

IJATCSE

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The Modular multilevel converter (MMC) is most popular because of its high efficiency, flexibility, less harmonic distortion, usages of less power rating of the devices, high modularity and high scalability. In spite of these advantages, MMC faces many challenges such as voltages balancing and inner or circulating current control. The main goal is balancing the voltages across the capacitor in each submodule without excessive switching of the power electronic devices. So by using a controlled switching frequency technique in voltage balancing in MMC legs, the average switching frequency of the device is reduced. Because of switching actions and fluctuations in capacitor voltages results in even order harmonics in inner currents, in that second harmonic is dominating one. These harmonic components in current introduce large power losses, increase stress on power devices, and also may cause instability of the system. Traditional circulating current suppression methods have some limitations of harmonic rejection capability, complex implementation and computations. A modified sliding mode control is proposed for controlling both voltage balancing and circulating current control in this paper. This controller suppresses the harmonic components, particularly 2 nd harmonic in the inner current. For controlling the modular multilevel converter phase disposition PWM is used in this paper.This controller is implemented for single phase MMC which can be extended further for three phase system. The comparison results for conventional PI and SMC controller with modified SMC controller is presented. The results of proposed controller is validated through MATLAB/Simulink environment.

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“…So the proposed control structure is shown in Figure 5. [13] This controller will perfectly balance the voltage between the arms along with control of inner current of each leg.…”

Section: Modified Sliding Mode Controlmentioning

confidence: 99%

A Modified Sliding Mode Control for Circulating Current Control and Voltage Balancing in Modular Multilevel Converter

Venkatesh¹

2020

IJATCSE

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“…As in signal processing, where the paramount of crucial and groundbreaking discoveries revolves around rudimentary issues of filtering techniques in the context of noisy and conflicting systems, the effective methodologies aiming at achieving the desired accuracy and precision are what is put in the spotlight . Aside many applications of filter , the sliding mode and variable structure filters are regarded as the vital implementations that provide the integration of certain qualities such as precision [52][53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68], flexibility [69][70][71][72], and robustness [73][74][75][76]. These methodologies have indeed become a venerable issue in the practice of the improvement of accuracy and reliability through signal processing systems which have usually been faced with a major challenge of non-linearities and disturbances that have made linear filtering ineffective [77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93]…”

Section: Introductionmentioning

confidence: 99%

Sliding mode and variable structure filters for signal processing: a literature review

Obaideen,

Hilal,

Gadsden

et al. 2024

Signal Processing, Sensor/Information Fusion, and Target Recognition XXXIII

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This paper will conduct an exhaustive analysis of sliding mode and variable structure filters, essential methodologies employed in signal processing that solve problems noisy and volatile environments induces. This study brings into focus the very foundations and practicality of interference filters by professional exploration of the theoretical basis, the extent of practical implementation, and the present research frontiers. It also emphasizes the critical role these filters play in making signal processing system more precise, adaptable, and resilient. The Sliding mode and the variable structure filters are optimal in the field of nonlinear problems that are augmented by interferences. These are what their purpose in noise reduction, error minimization and the system stability is. Review encompasses a wide range of applications, from robotics, aerospace to telecommunication with the aim to emphasis the variety and successfully of the filtering techniques when the signal processing is carried out in complex situations. The synthesis of the most recent achievements of the technology and discovery of the potential future directions passed down the concept of this work. The aim is to provide a push to developers to promote the implementation of the advanced application-specific solutions. And this discussion also demonstrates the flexible character that helps meet the demands of dynamic signal processing environments, forming the foundation for the next advanced systems that are adaptive and robust.

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Effect of Modulation Techniques on Capacitor Voltage of Modular Multilevel Converter

Uddin

Zeb

Khan

et al. 2020

2020 IEEE 23rd International Multitopic Conference (INMIC)

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Super twisting sliding mode control for inner current suppression of Modular Multilevel Converter

Cited by 3 publications

References 32 publications

A Modified Sliding Mode Control for Circulating Current Control and Voltage Balancing in Modular Multilevel Converter

A Modified Sliding Mode Control for Circulating Current Control and Voltage Balancing in Modular Multilevel Converter

Sliding mode and variable structure filters for signal processing: a literature review

Effect of Modulation Techniques on Capacitor Voltage of Modular Multilevel Converter

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