A Novel Hybrid Modulation Strategy for MMC Energy Storage System

Chen, Dongdong; Xiao, Long; Yan, Wenduan; Guo, Yinbiao

doi:10.1109/icopesa54515.2022.9754404

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…(1) The current limiting control is designed to reduce harmonics and avoid power quality issues while limiting the output current of the inverter. Novel current-limiting control techniques are suggested to improve power quality and reduce harmonic current [55,56]. (2) The average and instantaneous current control techniques are based on inter-unit communication, in contrast to the master-slave control method.…”

Section: Current Distribution Controlmentioning

confidence: 99%

Frequency and Voltage Control Techniques through Inverter-Interfaced Distributed Energy Resources in Microgrids: A Review

et al. 2022

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Microgrids (MG) are small-scale electric grids with local voltage control and power management systems to facilitate the high penetration and grid integration of renewable energy resources (RES). The distributed generation units (DGs), including RESs, are connected to (micro) grids through power electronics-based inverters. Therefore, new paradigms are required for voltage and frequency regulation by inverter-interfaced DGs (IIDGs). Notably, employing effective voltage and frequency regulation methods for establishing power-sharing among parallel inverters in MGs is the most critical issue. This paper provides a comprehensive study, comparison, and classification of control methods including communication-based, decentralized, and construction and compensation control techniques. The development of inverter-dominated MGs has caused limitations in employing classical control techniques due to their defective performance in handling non-linear models of IIDGs. To this end, this article reviews and illustrates advanced controllers that can deal with the challenges that are created due to the uncertain and arbitrary impedance characteristics of IIDGs in dynamics/transients.

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Section: Current Distribution Controlmentioning

confidence: 99%

Frequency and Voltage Control Techniques through Inverter-Interfaced Distributed Energy Resources in Microgrids: A Review

et al. 2022

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“…We have introduced a modular multilevel converterbased battery energy storage system and its mathematical model for the AC/DC sides, which was highly praised by conference attendees [23]. To balance the switching loss and output harmonic characteristics of the system, this paper proposes a novel hybrid PWM (NHPWM) modulation method that combines the commonly used NLM and CPS-PWM modulation methods in conventional cascaded modular multilevel converter topologies.…”

Section: Introductionmentioning

confidence: 99%

Novel Hybrid Modulation Method for Modular Multilevel Converter Based Energy Storage System

2023

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This paper focuses on introducing a modular cascaded battery energy storage system and establishing a mathematical model for both the AC and DC sides of the energy storage system. Based on this, a corresponding control strategy is proposed. To achieve a specific trade-off between switching times and output harmonics, a new hybrid modulation strategy (NHPWM) is proposed that combines the characteristics of NLM and CPS-PWM commonly used in traditional modular cascaded topologies. With this hybrid modulation strategy, the modulation of each sub-module can be flexibly configured, allowing the system to coordinate device loss and output harmonic characteristics in real time according to system requirements. Additionally, this paper proposes a calculation method based on the theory of double Fourier series expansion to derive the analytical solution of the NHPWM harmonic distribution, providing a theoretical basis for submodule modulation mode configuration. Finally, the correctness and effectiveness of the modulation strategy and theoretical calculation were verified by simulation and experiment. The proposed method in this paper has demonstrated clear advantages over traditional HPWM and CPS-PWM in terms of harmonics and efficiency, as shown by the experimental results.INDEX TERMS modular multilevel converter (MMC), novel hybrid PWM modulation (NHPWM), nearest level modulation (NLM), carrier phase-shift PWM (CPS-PWM)

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A Novel Hybrid Modulation Strategy for MMC Energy Storage System

Cited by 2 publications

References 8 publications

Frequency and Voltage Control Techniques through Inverter-Interfaced Distributed Energy Resources in Microgrids: A Review

Frequency and Voltage Control Techniques through Inverter-Interfaced Distributed Energy Resources in Microgrids: A Review

Novel Hybrid Modulation Method for Modular Multilevel Converter Based Energy Storage System

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