The hybrid cascaded HVDC system employs a line commutated converter(LCC)as the rectifier and an LCC in series with multiple paralleled modular multilevel converters(MMCs)as the inverter.MMC arms are susceptible to ove...
supported in part by National Natural Science Foundation of China under Grant 52125705;in part by the China Postdoctoral Science Foundation under Grant 2021M701137.
This paper uses impedance sensitivity to identify the parameters that have dominant influences on the stability of multi-converter systems, which can then efficiently improve system stability. A modified 400 V IEEE 13...
supported by the Science and Technology Project of State Grid Corporation of China(5500-202258115A-1-1-ZN).
The participation of photovoltaic(PV)plants in supporting the transient voltage caused by commutation failure in the line-commutated-converter-based high voltage direct current(LCC-HVDC)system is of great significance...
The coordinated control of parallel three-phase fourwire converters in autonomous AC microgrids is investigated in this paper.First,based on droop control,virtual impedance is inserted in positive-,negative-and zero-s...
supported by the National Key Research and Development Program of China(2020YFB1506800);the China Postdoctoral Science Foundation(2021M692378);the National Natural Science Foundation of China(51977142).
For dynamic stability analysis and instability mechanism understanding of multi-converter medium voltage DC power systems with droop-based double-loop control,an advanced system-level model reduction method is propose...
Performance of a three-phase shunt active power filter(SAPF)relies on the capability of the controller to track the reference current.Therefore,designing an accurate current controller is crucial to guarantee satisfac...
supported by the National Natural Science Foundation of China under Grant 52177086;the Fundamental Research Funds for the Central Universities under Grant 2023ZYGXZR063;the Science and Technology Program of Guizhou Power Grid Coorperation under Grant GZKJXM20222386.
Line-commutated converter (LCC)-based high-voltage DC (HVDC) systems have been integrated with bulk AC power grids for interregional transmission of renewable power. The nonlinear LCC model brings additional nonconvex...
supported by National Natural Foundation of China(61871410).
To reduce switch numbers and voltage stress in semiconductor devices,this paper proposes a novel single-phase converter combined Active Power Factor Correction(APFC)with switched-capacitor converter.In addition,dynami...
supported in part by the National Natural Science Foundation of China(U2166601,U2066602);the Science and Technology Department of Xinjiang under Grant No.2021D01C086;funded by Sustainable Energy Authority of Ireland(SEAI)by under project FRESLIPS,Grant No.RDD/00681.
Loss of synchronization is one of the main issues for a grid-feeding converter in a weak grid after being subjected to a large disturbance.The synchronous transient is highly nonlinear due to phase movement and freque...
This paper presents a modified modular multilevel cascaded converter based on a triple star bridge cell(MMCCTSBC)for integrating different types of energy storage to form a hybrid energy storage system(HESS).The propo...