Global advanced control strategy for Modular Multilevel Converter integrated in a HVDC link

Ayari, Mohamed; Belhaouane, Mohamed Moez; Guillaud, Xavier; Braïek, Naceur Benhadj

doi:10.1002/etep.2511

Cited by 7 publications

(6 citation statements)

References 35 publications

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“…All mathematical considerations and assumptions are evaluated in phase‐a for single phase MMC system in this subsection. Theoretical analysis of given circuit is stated in the following parts by applying Kirchhoff's Voltage Law (KVL)

V_{c, u p} = \frac{V_{d c}}{2} - v_{a c} - R_{a} i_{u p} - L_{a} \frac{d i_{u p}}{d t} - R_{f} i_{a c} - L_{f} \frac{d i_{a c}}{d t}

V_{c, l o w} = \frac{V_{d c}}{2} + v_{a c} - R_{a} i_{l o w} - L_{a} \frac{d i_{l o w}}{d t} + R_{f} i_{a c} + L_{f} \frac{d i_{a c}}{d t}

…”

Section: Circuit Topology and Modellingmentioning

confidence: 99%

See 1 more Smart Citation

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Kurtoğlu

Eroğlu

Arslan

et al. 2018

Int Trans Electr Energ Syst

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Summary The modular multilevel converters (MMCs) are frequently preferred for medium and high power energy conversion systems thanks to their modular structure and high quality output waveform. The remarkable studies related to the MMC have been carried out in recent years, which are mainly focused on its topology, control, or application. In this paper, MMC circuit topologies consisting of traditional submodule cells and new proposed configurations are introduced, and their control process, modulation techniques, and application areas are discussed in order to provide the readers the current state of the art of MMC technology. A wide part of this article is devoted to demonstrate the recent contributions arising in MMC studies. In this context, this paper not only outlines the circuit topology, control objectives, and applications of the MMC but also presents a comprehensive review, principally in terms of the latest developments of it. Ultimately, detailed proposals and new possible topics are provided to drive future expectations of MMC technology.

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V_{c, u p} = \frac{V_{d c}}{2} - v_{a c} - R_{a} i_{u p} - L_{a} \frac{d i_{u p}}{d t} - R_{f} i_{a c} - L_{f} \frac{d i_{a c}}{d t}

V_{c, l o w} = \frac{V_{d c}}{2} + v_{a c} - R_{a} i_{l o w} - L_{a} \frac{d i_{l o w}}{d t} + R_{f} i_{a c} + L_{f} \frac{d i_{a c}}{d t}

…”

Section: Circuit Topology and Modellingmentioning

confidence: 99%

“…Recent developed DC/DC MMC topologies. HBSM, half-bridge submodule; MMC, modular multilevel converter Single phase equivalent circuit diagram of the modular multilevel converter (MMC)Kirchhoff's Voltage Law (KVL) 65,66. …”

mentioning

confidence: 99%

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Kurtoğlu

Eroğlu

Arslan

et al. 2018

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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“…Modular multilevel converter (MMC) is attractive and potential candidate for high and medium power applications. [1][2][3][4][5][6] The filterless operation is one of the inherent merits of MMC as compared to conventional multilevel converters. 7 However, to improve the harmonic performance, the submodule (SM) count is needed to be increased.…”

Section: Introductionmentioning

confidence: 99%

A level enhanced voltage balancing method for modular multilevel converter without using sensors

Gobburi

Borghate

Meshram

2022

Circuit Theory & Apps

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The intrinsic characteristics such as modular structure, filterless operation, and absence of DC-link capacitor have made the modular multilevel converter (MMC) superior to the conventional multilevel converters. However, the submodule (SM) capacitor voltage balancing is crucial. This paper presents a voltage balance control method for MMC. The proposed method generates 2N + 1 levels (where N is the number of SMs per arm) which halves the step size of output voltage and improves the harmonic performance as compared to N + 1 level generation. It requires only one carrier per phase and no voltage and current measurements are needed for the implementation. Therefore, the proposed method makes the system cost-effective and reduces the implementation issues related with carrier-based methods substantially. It also alleviates the non-uniform charge distribution problem with the phase disposition pulse width modulation (PDPWM) technique. Further, a detailed mathematical analysis is presented which enhances the understanding of balancing algorithm. In addition to this, the circulating current with 2N + 1 modulation is analyzed and a control technique is presented. The proposed voltage balancing method is simulated comprehensively in MATLAB/SIMULINK software and validated by the experimental results obtained from a laboratory prototype.

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“…Comprehensively considering the voltage level and the PV capacity, IPOS‐connected BFBICs are utilized in the PV station to increase the output voltage of the station. In the grid‐connection station, the CDSM‐MMC with fault isolation capability is adopted to improve the power quality. Two control schemes of the BFBIC‐based PV converter are proposed, and the small‐signal stability of the converter under proposed control schemes is analyzed based on the linearized model . Compared with the control strategy adopted in Valderrama et al, the PV utilization can be improved when either the clamping part or the boost part is under MPPT control. Suggestions on the use of control modes under different scenarios, such as islanding and grid‐connection modes, are given.…”

Section: Introductionmentioning

confidence: 99%

“…Two control schemes of the BFBIC-based PV converter are proposed, and the small-signal stability of the converter under proposed control schemes is analyzed based on the linearized model. 14,21,22 Compared with the control strategy adopted in Valderrama et al, 15 the PV utilization can be improved when either the clamping part or the boost part is under MPPT control. 3.…”

mentioning

confidence: 99%

DC‐type grid‐connection system of PV generation and its control schemes

Dai

Zhu

et al. 2019

Int Trans Electr Energ Syst

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Summary Compared with the AC‐type photovoltaic (PV) grid‐connection system, its DC counterpart has characteristics like simpler control mode, less power loss, and higher PV utilization. However, there are few researches that gave clearly the topology and control strategies of the DC‐type integration system of PV generation, especially systems with the multimodule boost full bridge isolation converter (BFBIC). In this paper, taking a pilot project as an example, the topology and control strategies of the DC‐type grid‐connection system are given. Models of the PV cell, the BFBIC, and the clamp double submodule (CDSM)‐based modular multilevel converter (MMC) are presented first. Then, the output voltage and power of PV are analyzed and compared. Suggestions on the application of the control strategy are given finally.

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Global advanced control strategy for Modular Multilevel Converter integrated in a HVDC link

Cited by 7 publications

References 35 publications

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

A level enhanced voltage balancing method for modular multilevel converter without using sensors

DC‐type grid‐connection system of PV generation and its control schemes

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