A Control Scheme Based on Lyapunov Function for Cascaded H-Bridge Multilevel Active Rectifiers

Jean-Pierre, Garry; Altın, Necmi; Shafei, Ahmad El; Nasiri, Adel

doi:10.1109/apec39645.2020.9124234

Cited by 9 publications

(6 citation statements)

References 29 publications

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“…From this stipulation, an energy based function can be developed to evaluate the stability of the system [36] - [38]. As formulated in Lyapunov's direct method, the equilibrium point is universally asymptotically stable if V (x) meets the following criterion for all x = 0:…”

Section: A Lf Based Current Control Schemementioning

confidence: 99%

“…The proposed control scheme utilizes a PI regulator for the DC voltage control. The use of an additional DC voltage balancing controller, which was introduced in [35] and [36], helps to prevent unbalanced DC voltage conditions. This proposed control system topology and its performance for both transient and steady-state conditions are verified in the simulation and experimental results.…”

Section: Introductionmentioning

confidence: 99%

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An Expanded Lyapunov-Function Based Control Strategy for Cascaded H-Bridge Multilevel Active Front-End Converters

Jean-Pierre

Altın

Shafei

et al. 2023

IEEE Open J. Power Electron.

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Cascaded H-bridge multilevel (CHBML) active front-end (AFE) converters exhibit some enticing benefits, comprising high adaptability for numerous applications, such as tractions, solid-state transformers, electric vehicle charging stations, and medium and high power electric drives. Yet, when the CHBML-AFE is operating under an unbalanced load condition, it is crucial to utilize an advanced control technique to maintain system stability. In this research, a Lyapunov Function (LF)based control approach is utilized for regulating a single-phase CHBML-AFE with LCL filter to achieve global asymptotic stability. A capacitor voltage feedback is introduced and added to the traditional LF-based control strategy to reduce the resonance of the LCL filter. Furthermore, the proportional-resonant (PR) control procedure is utilized to derive the grid current reference, offering improvement to the robustness of the current control design. A balanced DC voltage control method is also employed to suppress the unbalanced DC voltage conditions among CHBML-AFE cells. In addition, the transfer function of the reference grid current and the actual grid current is evaluated for the CHBML-AFE with LCL filter parameters and their eventual variations in the employed control technique. The effectiveness of this control strategy is validated utilizing simulation and experimental studies.

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Section: A Lf Based Current Control Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Expanded Lyapunov-Function Based Control Strategy for Cascaded H-Bridge Multilevel Active Front-End Converters

Jean-Pierre

Altın

Shafei

et al. 2023

IEEE Open J. Power Electron.

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“…The inner loop is a current controller. It is well known that the PR controller has a good ability to track AC signals and can provide infinite gain at [13]. Because it is easy to implement and can realize zero steady-state error of phase and amplitude, this paper uses PR controller [16].…”

Section: Controller Configurationmentioning

confidence: 99%

“…Although the above control algorithms are effective, there are still some disadvantages such as current spectrum and variable switching frequency uncertainty, sensitivity to system model accuracy, complex parameter design and heavy calculation workload [13].…”

Section: Introductionmentioning

confidence: 99%

Hybrid PWM technology of cascaded H-bridge multilevel active rectifier

2020

2020 4th International Conference on Computer Engineering, Information Science &Amp; Application Technology (ICCIA 2020)

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“…In last two decades, applications involving the direct connection of power semiconductors to medium voltage (MV) have grown exponentially. These include adjustable speed drives [19]- [21], Power Electronic Converter (PEC) interfaces to Distributed Energy Resources (DERs) [22]- [28] and solid-state transformers [29]- [32] within specific application environments (i.e. DER interface, shipboard) and as power system components.…”

Section: Introductionmentioning

confidence: 99%

Review of Standards on Insulation Coordination for Medium Voltage Power Converters

Özdemir

Altın

Nasiri

et al. 2021

IEEE Open J. Power Electron.

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The increasing viability of wide band gap power semiconductors, widespread use of distributed power generations, and rise in power levels of these applications have increased interest and need for medium voltage converters. Understanding the definitions of insulation coordination and their relationship to applications and methodologies used in the test environment allows system engineers to select the correct insulation materials for the design and to calculate the required distances between the conductive surfaces, accessible parts and ground accurately. Although, design guidelines are well established for low voltage systems, there are some deficiencies in understanding and meeting the insulation coordination requirements in medium voltage, medium frequency applications. In this study, an overview on standards for insulation coordination and safety requirements is presented to guide researchers in the development of medium voltage power electronic converters and systems. In addition, an insulation coordination study is performed as a case study for a medium frequency isolated DC/DC converter that provides conversion from a 13.8kV AC system to a 4.16kV AC system.

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A Control Scheme Based on Lyapunov Function for Cascaded H-Bridge Multilevel Active Rectifiers

Cited by 9 publications

References 29 publications

An Expanded Lyapunov-Function Based Control Strategy for Cascaded H-Bridge Multilevel Active Front-End Converters

An Expanded Lyapunov-Function Based Control Strategy for Cascaded H-Bridge Multilevel Active Front-End Converters

Hybrid PWM technology of cascaded H-bridge multilevel active rectifier

Review of Standards on Insulation Coordination for Medium Voltage Power Converters

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