Research on control strategy of grid-connected inverter under unbalanced voltage conditions

Tao, Weiqing; Gu, Zhixia; Wang, Leqin; Li, Jiaxi

doi:10.1109/ipemc.2016.7512408

Cited by 11 publications

(6 citation statements)

References 7 publications

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“…According to (4) and [21], the dynamics of the MMC in the positive and negative rotating references can be expressed as 11…”

Section: B Analysis Of Grid Currentsmentioning

confidence: 99%

“…According to (4)~( 6), the vector control [21] including positive-sequence and negative-sequence control is adopted for the MMC, where the positive-sequence voltage is aligned to the d-axis of the positive rotating reference and the negative-sequence control is used to eliminate the negativesequence current. As a result, the positive-sequence voltage and the negative-sequence current are…”

Section: B Analysis Of Grid Currentsmentioning

confidence: 99%

“…The u p d and u p q are the positive-sequence MMC voltage in the dq reference frame. u n d and u n q are the negative-sequence MMC voltage in the dq reference frame.The active power P and reactive power Q in grid are[21]…”

mentioning

confidence: 99%

See 2 more Smart Citations

Temperature-Balancing Control for Modular Multilevel Converters Under Unbalanced Grid Voltages

Deng

Zhao

Liu

et al. 2022

IEEE Trans. Power Electron.

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“…According to (4) and [21], the dynamics of the MMC in the positive and negative rotating references can be expressed as 11…”

Section: B Analysis Of Grid Currentsmentioning

confidence: 99%

Section: B Analysis Of Grid Currentsmentioning

confidence: 99%

See 1 more Smart Citation

Temperature-Balancing Control for Modular Multilevel Converters Under Unbalanced Grid Voltages

Deng

Zhao

Liu

et al. 2022

IEEE Trans. Power Electron.

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“…The ultimate objective of using such dual current control to regulate currents of both sequences is to either i) achieve balanced output current [38], or ii) cancel the 2nd order power ripple caused by the interaction of positive-sequence current and negative-sequence voltage [39]. For i), balanced three-phase currents can be obtained by setting negative-sequence current references to zero.…”

Section: Converter-level Controlmentioning

confidence: 99%

Power Electronic Converters for Microgrids

Ming¹

2021

Microgrids and Local Energy Systems

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Power electronic converters are indispensable building blocks of microgrids. They are the enabling technology for many applications of microgrids, e.g., renewable energy integration, transportation electrification, energy storage, and power supplies for computing. In this chapter, the requirements, functions, and operation of power electronic converters are introduced. Then, different topologies of the converters used in microgrids are discussed, including DC/DC converters, single-phase DC/AC converters, three-phase three-wire, and four-wire DC/AC converters. The remaining parts of this chapter focus on how to optimally design and control these converters with the emerging wide-bandgap semiconductors. Correlated tradeoffs of converter efficiency, power density, and cost are analyzed using Artificial Neural Networks to find the optimal design of the converters.

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“…However, the combination of these control targets according to the operation situation has not been studied in depth. Weiqing et al [22] analysed the influence of different control targets on the output power and grid‐side current and established a unified current reference vector expression. To improve the energy‐saving ability of the grid‐connected converter, a linear reactive power control and double closed‐loop strategy are proposed.…”

Section: Introductionmentioning

confidence: 99%

Coordinated‐control strategy of scalable superconducting magnetic energy storage under an unbalanced voltage condition

Lin¹,

Lei

et al. 2019

IET Renewable Power Generation

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Modular multilevel converters (MMCs) have the advantages of high-power density and small-harmonic distortion because of their modularity and flexibility, thus providing a new avenue for research into scalable superconducting magnetic energy storage (SMES) in renewable energy generation. This study presents coordinated control for a three-phase four-wire (3P4W) MMC-based SMES system under unbalanced voltage applications. First, the positive-and negative-sequence mathematical models and the port-controlled Hamiltonian with dissipation model of the 3P4W MMC-SMES system are established by introducing an additional path for zero-sequence current. Second, a multi-objective passivity-based control strategy that can effectively improve the power quality and system robustness and eliminate both double-frequency active and reactive power fluctuations or double-frequency active power fluctuation and negative-sequence current is proposed. The simulation results based on MATLAB/Simulink demonstrate the effectiveness of the proposed topology of the SMES and its control strategy.

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Research on control strategy of grid-connected inverter under unbalanced voltage conditions

Cited by 11 publications

References 7 publications

Temperature-Balancing Control for Modular Multilevel Converters Under Unbalanced Grid Voltages

Temperature-Balancing Control for Modular Multilevel Converters Under Unbalanced Grid Voltages

Power Electronic Converters for Microgrids

Coordinated‐control strategy of scalable superconducting magnetic energy storage under an unbalanced voltage condition

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