Results 31 to 40 of about 875 (164)

Differential Flatness-Based Performance Enhancement of a Vector Controlled VSC With an LCL-Filter for Weak Grids

IEEE Access, 2021
In this paper, a novel single-loop flatness-based controller (FBC) is proposed to control the grid-side current in a shunt converter connected to a weak grid through an LCL-filter.
Hassan Abdullah Khalid, Carlo Cecati, Nasser Ahmed Al-Emadi, Adel Gastli, Lazhar Ben-Brahim   +4 more
doaj   +1 more source

Model based current mode control design and experimental validation for a $$3\phi$$ 3ϕ rectifier under unbalanced grid voltage conditions

Journal of Modern Power Systems and Clean Energy, 2018
This paper addresses the control design and the experimental validation of a current mode control for a three phase voltage source rectifier. The proposed control law is able to fulfill the voltage regulation and the current tracking control objectives ...
P. R. MARTÍNEZ-RODRIGEZ, Jose M. SOSA, Samuel ITURRIAGA-MEDINA, Gerardo ESCOBAR, Gerardo VÁZQUEZ-GUZMÁN, Andres A. VALDEZ-FERNÁNDEZ   +5 more
doaj   +1 more source

Optimal Suppression Strategy for Capacitor Voltage Ripples of Hybrid MMCs Under Unbalanced Grid Voltages

IEEE Transactions on Power Delivery, 2023
Submodule (SM) capacitor voltage ripples in modular multilevel converters (MMCs) can be suppressed by harmonic injection strategy, which can reduce the volume and cost of MMCs. The existing methods using the dual harmonic injection strategy for hybrid MMCs only consider steady-state conditions.
Jianzhong Xu, Junxin Wang, Yukun Yang, Jinan Wang, Gen Li   +4 more
openaire   +1 more source

Hybrid vector modulated model predictive control of bidirectional voltage source converter under unbalanced grid voltages

Systems Science & Control Engineering
For the power control problem of a bidirectional voltage-source converter, because only one voltage vector is applied at each control period, the traditional model predictive direct power control strategy brings in high harmonic content. In this paper, a
Zhichao Zhao, Licheng Wang, Jin Xiong, Zahoor Ahmed   +3 more
doaj   +1 more source

A Control Strategy of DFIG under Unbalanced Grid Voltage

Elektronika ir Elektrotechnika, 2013
Under an unbalanced power grid voltage conditions, the DFIG’s stator side active power, reactive power, and electromagnetic torque will generate twice-multiplied frequency pulse quantities. In this paper, a double SRF (synchronous rotating coordinate system) control strategy was advanced.
Hui Xiao, Feiyan Liu
openaire   +1 more source

Predictive Direct Power Control for Dual-Active-Bridge Multilevel Inverter Based on Conservative Power Theory

Energies, 2020
This paper explores the feasibility of multilevel dual-active bridge-inverter (DABMI) applications for grid-connected applications of a modern Model of Predictive Direct Power Control (MPDPC) based on the conservative power theory (CPT).
Azuwien Aida Bohari, Hui Hwang Goh, Agustiono Kurniawan Tonni, Sze Sing Lee, Sy Yi Sim, Kai Chen Goh, Chee Shen Lim, Yi Chen Luo   +7 more
doaj   +1 more source

Grid integrated solar energy transfer system with a two‐layer complex coefficient filter‐based control

IET Power Electronics, 2022
In this paper, a novel control strategy for grid‐integrated solar energy transfer system (SETS) is proposed which enhances the grid power quality along with active power injection.
Renuka Varma P C, Nirmal Mukundan C M, Jayaprakash Pychadathil, Ahmed Al‐Durra   +3 more
doaj   +1 more source

Inter-cluster Voltage Balancing Control of Modular Multilevel Cascaded Converter Under Unbalanced Grid Voltage

Journal of Modern Power Systems and Clean Energy, 2022
This paper presents a novel inter-cluster direct current (DC) capacitor voltage balancing control scheme for the single-star configured modular multilevel cascaded converter (MMCC)-based static synchronous compensator (STATCOM) under unbalanced grid ...
Oghenewvogaga Oghorada, Li Zhang, Ayodele Esan, Dickson Egbune, Julius Uwagboe   +4 more
doaj   +1 more source

Grid-tied converter operated under unbalanced and distorted grid voltage conditions

Bulletin of the Polish Academy of Sciences Technical Sciences, 2020
The paper presents a three-phase grid-tied converter operated under unbalanced and distorted grid voltage conditions, using a multi-oscillatory current controller to provide high quality phase currents. The aim of this study is to introduce a systematic design of the current control loop.
A. Gałecki, M. Michalczuk, A. Kaszewski, B. Ufnalski, L.M. Grzesiak   +4 more
openaire   +2 more sources

Passive Sliding Mode Controlled UPFC and its Treatment Strategy of Unbalanced Grid Conditions

Frontiers in Energy Research, 2021
Modular multilevel converter based unified power flow controller (MMC-UPFC) can provide flexible power regulation and plays an important role in the smart grid and future distribution networks.
Yang Chen, Han Wang, Miao Zhu, Ming Liu, Jianjun Ma, Xu Cai   +5 more
doaj   +1 more source