Kaidong Lu

Reverse Frequency Transmission-Based Active Support Control for Offshore Wind Farm Integrated M3C-LFAC Systems

Heng Nian, Kaidong Lu, Zhen He, bin hu et autres

The transient stability of offshore wind farm (OWF) integrated modular multilevel matrix converter based low-frequency AC (M3C-LFAC) systems is challenging during onshore frequency support. This letter identifies that the OWF-M3C power mismatches, triggered by the slow response delay of the OWF phase-locked …

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Overstresses Coupling Mechanism and Coordinated Suppression Strategy of Ultra-Long MMC-HVDC System Under DC Overhead Line Fault

Zihao Shen, Zhen He, Heng Nian, Cao Wen et autres

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Torsional Vibrations Suppression for GFM-DFIG Wind Turbine Considering Electromechanical Interaction Effects

Xudong Huang, Bin Hu, Junchao Ma, Chenxu Wang et autres

To effectively enhance the voltage and frequency supporting capabilities for power grid, the doubly fed induction generator based wind turbine (DFIG WT) can be connected to the grid via grid-forming (GFM) control. However, the GFM control intensifies the dynamic interaction between the …

Interaction Impact and Coordinated Mitigation Strategy of Low Frequency Oscillations with Torsional Vibrations for GFM-DFIG Wind Turbine

Xudong Huang, Bin Xiang Hu, Sen Zang, Kaidong Lu et autres

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Maximizing Voltage Support Capability of DFIG-Based WT Considering Rotor-Side Limitations under Asymmetrical Faults

Sen Zhang, Bin Xiang Hu, Lei Yang, Yuming Liao et autres

During asymmetrical faults, Doubly-Fed Induction Generators (DFIGs) need to inject dual-sequence currents to support the grid voltage. To further exploit the dual-sequence voltage support capability of the DFIG, this paper proposes a novel model aimed at maximizing this support subject to the …

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Transient Stability Analysis and Enhanced Control of Dual-Grid-Forming MMC Under AC Grid Faults

Kaidong Lu, Zhen He, Junchao Ma, Chenxu Wang et autres

The dual-grid-forming (DGFM) control of modular multilevel converter (MMC) can provide active power support by releasing submodule (SM) energy. At the same time, it maintains the ability to regulate DC voltage, making it promising for large-scale offshore wind power integrated high-voltage direct …

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Transient stability analysis of VSG-controlled converter considering grid voltage phase-angle jump

Dereje Taye Teklu, Ling Zhan, Kaidong Lu, Bin Xiang Hu et autres

Virtual Synchronous Generators (VSGs) can emulate the behavior of synchronous generators (SGs), providing inertia support to enhance grid stability. However, VSGs may experience transient instability due to improper control parameters and fault conditions. Existing studies on transient stability often focus on single …

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Modeling and Analysis of Rotor Current of DFIG with Rotor Chopper Circuit Operative Condition During Three-Phase Symmetric Faults

Kaidong Lu, Guodong Xu, Feng Xiang, Xiao Jin et autres

with the continuous development of wind energy as an essential component of renewable energy, the modeling and analysis of rotor currents during three-phase symmetrical short-circuit faults in doubly-fed induction generator (DFIG) systems hold significant importance. However, the mathematical modeling and analysis of …

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