Since 2002, CS is involved in the conception and the specification of ATC systems for A320, A340, A380, A400M and A350 aircrafts. The ATC module, a ground/onboard communication system, is designed with SDL, a modelling language normalized by the ITU-T and which is described as a UML2-profile, too. The SDL well defined semantic allows to have homogeneous code generators and model simulators: the...

This paper is concerned with real-time decision problems. These constitute a generic class of dynamic and stochastic problems. The objective is to provide responses of a required quality in a continuously evolving environment, within a prescribed time frame, using limited resources and information that is often incomplete or uncertain. Furthermore, the outcome of any particular decision may als...

The increasing penetration of photovoltaics (PV) in the bulk power system has led to growing need for better understanding behavior PV inverters during grid disturbances. A configurable dynamic model is presented this paper emulating a Low Voltage (LV) connected off-the-shelf inverter faults and voltage dips. been developed validated against results acquired throughout empirical characterizatio...

9 μW at the fundamental frequency of 1.09 THz, 15 0.98 and up to 27 lower frequencies 620–660 GHz have been demonstrated with double-resonant-tunneling-diode (RTD) patch-antenna oscillators. These parameters are substantially superior those previously reported for RTD oscillators, they close state-of-the-art level all other types oscillators around 1 THz. However, double-RTD also provide essent...

The continuous improvement of new energy penetration reduces the inertia system, which leads to frequency deviation and rate change (RoCoF) being easily exceeded. To improve stability sending-end power systems with large-scale renewable access via ultra-high voltage direct current (UHVDC), coordinated control for UHVDC participating in system regulation (FR) including primary FR inertial respon...

Significant research attention is focused on the stability and control of voltage-source converters (VSCs) in weak ac grids. However, assessment VSC strategies has never been standardized, such that novel solutions proposed literature are not objectively evaluated against current best-practice. This paper establishes a comprehensive, standardized framework for grid-connected controllers, which ...

Modular multilevel converter (MMC) is adopted mainly for high voltage applications with many power blocks per arm. Before commissioning a large-scale MMC application, it vital to simulate and study internal system-level dynamics. However, challenging an SMs in EMT simulation tools due time computation burden. Therefore, several simplified modeling techniques are proposed reduce the challenges. ...

This paper presents a acomprehensive design and control strategy for photovoltaic (PV) energy storage system. The system consists of 2kW system, two converter circuits, resistive load 6 Ohm lithium-ion battery integrated with DC Bus applying constant power to the load. scheme offered topologies, one is boost another DC/DC bidirectional converter. directly connected in series PV array whereas (B...