Results 71 to 80 of about 378,481 (208)

Interval Robust Controller to Minimize Oscillations Effects Caused by Constant Power Load in a DC Multi-Converter Buck-Buck System

IEEE Access, 2019
Multi-converter electronic systems are becoming widely used in many industrial applications; therefore, the stability of the whole system is a big concern to the real-world power supplies applications.
Kevin Eduardo Lucas Marcillo, Douglas Antonio Plaza Guingla, Walter Barra, Renan Landau Paiva De Medeiros, Erick Melo Rocha, David Alejandro Vaca Benavides, Fabricio Gonzalez Nogueira   +6 more
doaj   +1 more source

A novel OPF analysis for optimizing wind power curtailment in AC/multi-terminal VSC-HVDC systems under frequency constraints

International Journal of Electrical Power & Energy Systems
A novel optimal power flow formulation for AC/multi-terminal voltage-source converter-based high-voltage direct-current systems is developed to calculate the wind power curtailment level considering frequency constraints. The objective function minimizes
Sangwon Kim
doaj   +1 more source

A Review of Non-Isolated High-Gain Y-Source Converters Topologies

Energies
Due to the low voltage and high randomness of renewable energy, high-performance grid-connected converters are needed. With the advantages of a high boost ratio, flexible design, and simple control, the Y-Source Converter (YSC) is widely concerned ...
Hao Wang, Panbao Wang, Enpeng Yan, Wei Wang, Dianguo Xu   +4 more
doaj   +1 more source

Investigating the effects of current thresholds on phase jump limits and withstand capabilities in grid‐forming converters

IET Generation, Transmission & Distribution
The inherent constraints of grid‐forming converters affect their ability to maintain voltage source characteristics within a specific operational range.
Ziqian Zhang, Robert Schuerhuber, Lothar Fickert, Guochu Chen   +3 more
doaj   +1 more source

High frequency resonance characteristics analysis of voltage‐source virtual synchronous generator and suppression strategy

IET Electric Power Applications
The voltage‐source virtual synchronous generator is a grid‐forming type power electronic control technology and is able to support converters that have the ability of inertial, primary frequency and voltage regulation.
Zhi Li, Mingbo Liu, Yu Gong, Xudong Li
doaj   +1 more source

Multi-level adaptive coordinated AC fault ride-through control strategy for hybrid cascaded UHVDC transmission system

电力工程技术
Hybrid cascaded ultra high voltage direct current (UHVDC) integrates the advantages of line commutated converters (LCC) and voltage source converters (VSC).
LYU Yanbei, ZHAO Wenqiang, SHI Qiaoming, YAO Qixin, SUI Shunke, CHANG Haotian   +5 more
doaj   +1 more source

Virtual-Impedance-Based Control for Voltage-Source and Current-Source Converters

IEEE transactions on power electronics, 2015
Xiongfei Wang, Y. Li, F. Blaabjerg, P. Loh   +3 more
semanticscholar   +1 more source

Improved LADRC-Based DC-Bus Voltage Control Strategy for Bidirectional Converters in AC/DC Hybrid Microgrids

Energies
Bidirectional AC/DC converters in hybrid microgrids are prone to DC-bus voltage instability caused by source-side, grid-side, and load-side disturbances.
Jiamian Wang, Yi Zhang, Baojiang Wu
doaj   +1 more source

Two-Switch Ultrahigh Step-Up DC–DC Converterer With Low Input Current Ripple and Low Switch Voltage Stress

IEEE Open Journal of Power Electronics
Existing high step-up DC-DC converters suffer from various issues, including limited voltage gain, high voltage stress on semiconductors, and high current ripple.
Vahid Abbasi, Mohammad Mehdi Kashani, Milad Rezaie, Dylan Dah-Chuan Lu   +3 more
doaj   +1 more source

Estimation of Positive‐, Negative‐, and Zero‐Sequence Current and Voltage Phasors of UIPC VSCs for Short‐Circuit Faults in Transmission Lines

Engineering Reports
FACTS devices, functioning as controlled series voltage and parallel current source converters in transmission lines, can enhance network flexibility. The currents and voltages are regarded as unknown variables in the impedance estimation equations of ...
Babak Bahadori, Ali Nahavandi, Mahyar Abasi   +2 more
doaj   +1 more source