Multi-port Coordinated Control Strategy of SOP in Distribution Network

Yang, Minghong; Pan, Xing; Li, Yuze

doi:10.1109/apec39645.2020.9124196

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…Finally, it should be noted that we do not consider in this paper SOP based on modular multilevel converter (MMC) topologies, which are recently proposed as an alternative to the B2B 2-or 3-level voltage source converter (VSC) configuration, especially for MV applications; see [19][20][21][22][23]. See [22] for a comparison between the two structures in terms of PQ operating area.…”

Section: Of 18mentioning

confidence: 99%

“…In [20], the authors propose the use of modular multilevel converters as power electronics topology for an MV SOP. A control strategy of a multi-port MMC-based SOP under steady-state operation of a distribution network is presented in [21]. In [22], an analysis of the operating areas of the MMC structure in comparison to a back-to-back structure is presented.…”

Section: Introductionmentioning

confidence: 99%

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15 kVA Three-Phase Low-Voltage SOP Prototype Laboratory Tests Results

et al. 2020

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In this paper, a 15 kVA soft open point converter is presented. The converter design and manufacturing have been presented in previous papers. The aim of this paper was to show the results of the devices in a full-scale laboratory environment, Gridlab, made of four distribution LV feeders, each rated 40 A. The tests demonstrated the good dynamics of the SOP control and its usefulness in performing a suitable PQ control. They also showed an improvement in the voltage profile and in the load capacity of the overall network. In the final part of the paper, the feedback earned during the development and the test of this first prototype are presented. This feedback will benefit the team for the design of a new improved 50 kVA version.

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Section: Of 18mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

15 kVA Three-Phase Low-Voltage SOP Prototype Laboratory Tests Results

et al. 2020

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“…Modular multilevel converters were proposed by German scholars R. Marquardt and A. Lesnicar. It is widely used in medium-voltage and high-voltage applications, such as the voltage source converter based high voltage direct current transmission (VSC-HVDC) [1]- [4], flexible multi-state switch (FMSS) [5]- [6], unified power flow controller (UPFC) [7]- [8], and so on, due to its advantages of low switching frequency, strong scalability, high waveform quality, and multiple output levels [9]. To increase system stability, the MMC must control not only the output power and current, but also the internal circulating current of the system and the fluctuation of the sub-modules (SMs)capacitor voltage [10]- [11].…”

Section: Introductionmentioning

confidence: 99%

Compensatory Model Predictive Current Control for Modular Multilevel Converter With Reduced Computational Complexity

et al. 2022

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Model predictive control (MPC) is widely used in modular multilevel converter (MMC) control because of its strong robustness, fast dynamic response, and strong stability. Traditional MPC must traverse several switch combinations to accurately regulate the output current and circulating current of the MMC. Therefore, as the number of sub-module (SM) grows, the controller's computational complexity grows. This paper proposes a compensatory model predictive current control (CMPCC) for inner loop current control. It immediately estimates the number of SMs required by the bridge arm without scrolling optimization, reducing the amount of calculation of the system and improving the output current and circulating current tracking accuracy to the references. The objective function is established based on the system output current and internal circulation current by developing the discretization mathematical model of MMC. On the basis of minimizing the optimization scope, the compensation prediction is achieved through the volt-second balance, to achieve effective current control. Subsequently, an uneven bucket sorting algorithm is proposed to drastically eliminate the unnecessary sorting process. Finally, both a MATLAB/Simulink model and an experimental platform of MMC are built. To verify the practicality of the proposed control strategy, simulation and hardware experiments are provided.

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“…In particular, SOPs A can enhance the system performance and controllability and afford flexible system configuration in both normal and emergencies especially in case of faults [23][24][25]. For an example, multi-port control strategy of SOP application in a distribution network is presented in [26] for improving the power quality. Additionally, multi-objective SOP planning model is proposed in [27] to minimize the annual total cost and power losses for the distribution networks.…”

Section: Introductionmentioning

confidence: 99%