Abstract: This paper evaluates application feasibility of a Hybrid Multi-terminal HVDC system and wind-thermal-bundled plants simulated in DIgSLIENT PowerFactory environment. The proposed hybrid MTDC system consists of two line-communicated converters (LCC), which are connected to both wind farms and thermal power plants, and one voltage source converter (VSC) at the grid side. Control strategi...

This paper presents the comparison of applying an adaptive fuzzy controller with and without a variable structure controller (VSC) for a synchronous machine. A simplified linear model of the synchronous machine connected to an infinite bus with constant impedance is used. The multivariable system was previously decoupled to make easier the application of the control schemes. To control the syst...

This paper presents a hybrid form of control which has both Fuzzy Logic Control (FLC) and Variable Structure Control (VSC) integrated. This proposed Fuzzy Variable Structure Control (FVSC) approach combines the power of approximate reasoning of FLC with the switching synthesis used in VSC. The FVSC is applied to control and stabilize a micro satellite in space. A model of satellite is used in t...

Hybrid HVDC systems have been proposed as an alternative for nominal VSC-Based offshore applications. consist of power station composed the connection high-power diode rectifiers in series with a fractional VSC-HVDC. This hybrid configuration allows large transfer from sites, added robustness, simplicity and efficiency uncontrolled rectifiers. In this research, robust fast-acting controller, Tw...

For a small fraction of hot CO2 molecules immersed in liquid-phase thermal bath, classical cavity molecular dynamics simulations show that forming collective vibrational strong coupling (VSC) between the C=O asymmetric stretch and mode accelerates hot-molecule relaxation. This acceleration stems from fact polaritons can be transiently excited during nonequilibrium process, which facilitates int...

Renewable energy sources, which are becoming increasingly popular, often use a voltage source converter (VSC) for connection to the power system. Assessing effects of connecting such system is essential ensure proper operation and connected source. For this purpose, it necessary know range active reactive generation by converter. The authors indicate that interaction between affects its availab...

The purpose of this study is to improve the P-I controllers voltage-source converters (VSC)-based multiterminal high voltage direct-current (MT-HVDC) networks. Since VSCs are non-linear elements MT-HVDC stations, classical optimization methods, which approximately implement linear model optimize VSCs, do not generate optimal results. Therefore, paper presents a novel technique VSC-based grids’ ...

The ability of voltage source converters (VSCs) to restore blackout grid has been widely accepted based on their abilities in flexible and independent power control. However, the traditional literature only studied case a two-terminal hybrid system which all required black start (BS) is provided by single healthy AC grid. Meanwhile, dynamic changes at sending end, including converter, are not c...

In this article, the interactions between AC grid and existing VSC control modes are analyzed. First, three modes, namely grid-feeding, grid-supporting grid-forming, compared with each other in order to assess VSC/grid coupling level. Then, underscore growing role of VSCs transmission systems, an elementary benchmark network is considered. It includes equivalent SM (Synchronous Machine), a VSC,...