Results 31 to 40 of about 832 (104)

Stability and Synchronization of MMC‐HVDC Systems Using SRF and Inertia‐Based PLLs

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This study investigates the influence of synchronous reference frame PLL (SRF‐PLL) and the inertia PLL (IPLL) on the stability of grid‐connected modular multilevel converter high voltage direct current (MMC‐HVDC) systems. The findings highlight intrinsic stability limitations of PLL‐based systems, offering insights toward more stable, PLL‐less ...
Shuai Wang, Robin Preece, Mike Barnes
wiley   +1 more source

Sub‐Synchronous Oscillation in Offshore Energy Islands With MMC‐HVDC Links: Mechanism, Analysis and Mitigation

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper investigates the small‐signal stability of offshore energy islands interconnected by multiple MMC‐HVDC links and reveals a previously unreported sub‐synchronous oscillation (SSO) mechanism caused by multi‐converter coupling through the offshore AC network.
Arash July, Mehdi Savaghebi, Sam Roozbehani, Gen Li, Nicolaos A. Cutululis, Maryam Saeedifard   +5 more
wiley   +1 more source

Jitsu: Just-in-time summoning of unikernel [PDF]

, 2015
Network latency is a problem for all cloud services. It can be mitigated by moving computation out of remote datacenters by rapidly instantiating local services near the user.
Chaudhry, A, Crowcroft, J, Gazagnaire, T, Leonard, T, Leslie, I, Ludlam, J, Madhavapeddy, A, Mortier, R, Scott, D, Sheets, D, Singh, B, Skjegstad, M   +11 more
core  

A Novel Modular Cascaded Topology for High‐Voltage Battery Energy Storage and Solar Photovoltaic Systems

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
Battery storage systems are limited to using a lot of parallel‐connected cells due to their insulation limits. In this paper, we propose a cascade‐based topology for energy storage systems and PVs, whose main advantage a lot of cells in series can be connected, obtaining higher operation voltages and reduced currents.
José M. Guerrero, Jelena Stojkovic Terzic, Unai Villena, Tomislav Rajić, D. Marene Larruskain   +4 more
wiley   +1 more source

Comprehensive Study of DC Microgrids Protection: Challenges, Cutting‐Edge Techniques, Machine‐Learning‐Driven Solutions

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
ABSTRACT This paper provides a comprehensive examination of the evolving protection challenges within DC microgrids powered by renewable resources and energy storage systems. It begins by delineating the methodological framework of conventional protection, critically assessing schemes based on current, voltage, and impedance to expose their limitations
Mohamed Elmadawy, Ahmed Shahin, Abdelhady Ghanem, Almoataz Y. Abdelaziz, Fujin Deng, Ahmad S. Ayub, Abdalbaset Mnider, Sayed Abulanwar   +7 more
wiley   +1 more source

Integrating Composite Materials Throughout the Military Sector: A Review

Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
Composite materials have attracted considerable attention in the defense industry owing to their distinctive properties and wide‐ranging applications. This systematic review examines the current research landscape and recent advancements in the application of composite materials for defense purposes.
Mikru Birhan, Besufekad Negash, Temesgen Batu, Yobel Abunu, Mohammad Rezwan Habib   +4 more
wiley   +1 more source

Emerging Trends in Additive Manufacturing of Metal Matrix Composites: Opportunities and Obstacles

MetalMat, Volume 2, Issue 4, December 2025.
Schematic illustrating the limitations of conventional MMC manufacturing and AM‐based solutions for high‐performance engineering applications. ABSTRACT Metal matrix composites (MMCs) are attracting increasing attention owing to their high strength, thermal stability, and wear resistance, making them essential in industries such as aerospace, automotive,
Juyeon Han, Hyokyung Sung, Jae Bok Seol, Kisub Cho, YeonJoo Lee, Hyunjoo Choi   +5 more
wiley   +1 more source

Operation of a mudular multilevel converter controlled as a Virtual synchronous machine [PDF]

, 2018
acceptedVersio
adeuyi, antonopoulos, bergna, tu, visscher, zhang, zhong, zhou   +7 more
core   +1 more source

Viking '75 spacecraft design and test summary. Volume 3: Engineering test summary [PDF]

The engineering test program for the lander and the orbiter are presented. The engineering program was developed to achieve confidence that the design was adequate to survive the expected mission environments and to accomplish the mission ...
Faust, R. P., Holmberg, N. A., Holt, H. M.   +2 more
core   +1 more source

Predictive value of fetal Doppler velocimetry, fetal growth trajectory and maternal serum biomarkers for short‐term adverse perinatal outcome: secondary analysis of DRIGITAT study

Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 4, Page 470-479, October 2025.
ABSTRACT Objectives To evaluate the predictive value of markers of placental insufficiency and fetal growth restriction for a composite adverse perinatal outcome (CAPO) in a small‐for‐gestational‐age (SGA) population. We also aimed to identify profiles that discriminate fetuses as low or high risk for CAPO, and to evaluate the association of onset of ...
H. D. Kamphof, M. C. Marijnen, S. E. Damhuis, H. Wolf, S. J. Gordijn, W. Ganzevoort, on behalf of the DRIGITAT Trial Group, J. M. Schaaf, M. A. de Boer, J. J. Zwart, A. J. M. Huisjes, J. H. W. Veerbeek, J. O. E. H. van Laar, S. Al‐Nasiry, H. A. Bremer, B. B. J. Hermsen, H. P. van de Nieuwenhof, M. Sueters, D. P. van der Ham, M. S. Post, J. Baalman, J. B. Derks, J. M. Sikkema, J. W. de Leeuw   +23 more
wiley   +1 more source