Author

Guoteng Wang

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Open access Sep 2026

Capacitor-Voltage Ripple Control and Capacitance Reduction Potential of the Auxiliary MMC in a Series-Connected DRU–MMC Offshore HVDC System

This paper develops a capacitor-voltage ripple-control scheme that combines negative-sequence second-harmonic capacitor-voltage feedback with third-harmonic zero-sequence voltage injection. An arm-energy model incorporates the common dc current, auxiliary-MMC voltage allocation, and ac support duty. The dc-series conne...

Long Zhao, Li-Na Zhang, Zhen-Hua Yuan et al. · Electronics · 0 citations

Open access Sep 2026

Voltage Support Technology for Renewable Energy Collection Stations with Synchronous Machine-like Characteristics

To improve voltage support at the point of common coupling of renewable energy collection stations connected to weak grids, this paper proposes a synchronous machine-like outer reference generator for a conventional fixed-PQ voltage-source converter (VSC). The proposed versatile static synchronous machine (VSSM) emulat...

Jun Chen, Yu Duan, Xing Ma et al. · Electronics · 0 citations

Open access Aug 2026

Neural Network-Based Optimized Control for Enhancing Voltage Support of Grid-Forming MMCs Under Voltage Sags

With the integration of renewable energy and power-electronic devices, grid-forming modular multilevel converters (GFM-MMCs) play a critical role in active grid support. An AC grid voltage sag can trigger a large support current, which may cause large voltage fluctuations in submodule capacitors and arm overmodulation,...

Yi Lu, Feng Xu, Qian Chen et al. · Energies · 0 citations