High speed protection concept to minimize the impacts of arc-flash incidents in electrical systems of ships

2011 ◽  
Author(s):  
Lauri Kumpulainen ◽  
Toni Harju ◽  
Heinz Pursch ◽  
Sven Wolfram
Keyword(s):  
High Speed ◽  
Electrical Systems ◽  
Arc Flash

Controlled Arming of Mechanical Systems Embedded into Embarked Electrical Systems

2014 ◽  
Vol 555 ◽  
pp. 209-216
Author(s):  
Gheorghe Negru
Keyword(s):  
Kalman Filter ◽  
Mechanical System ◽  
High Speed ◽  
Mechanical Systems ◽  
Electrical Systems ◽  
General Motion

The paper presents an application of the Kalman filter to achieve the controlled arming of mechanical system embedded into embarked electrical systems (FMES). The solution of FMES which contain mechanical subsystems electronically controlled could significantly reduce the influence, on their functioning, of the general motion of high speed object (HSO) .

Monitoring Elite Soccer Players’ External Loads Using Real-Time Data

2017 ◽  
Vol 12 (10) ◽  
pp. 1285-1287 ◽  
Author(s):  
Steve Barrett
Keyword(s):  
Real Time ◽  
High Speed ◽  
Training Session ◽  
Maximum Velocity ◽  
Soccer Players ◽  
Data Sets ◽  
Time Data ◽  
Electrical Systems ◽  
Locomotor Activities ◽  
Physical Output

Purpose: To assess the validity of measuring locomotor activities and PlayerLoad using real-time (RT) data collection during soccer training. Methods: Twenty-nine English soccer players participated. Each player wore the same MEMS device (Micromechanical Electrical Systems; S5, Optimeye; CatapultSports, Melbourne, Australia) during 21 training sessions (N = 331 data sets) in the 2015–16 and 2016–17 seasons. An RT receiver (TRX; Catapultsports, Melbourne, Australia) was used to collect the locomotor activities and PlayerLoad data in RT and compared with the postevent downloaded (PED) data. PlayerLoad and locomotor activities (total distance covered; total high-speed running distance covered, >5.5#x00A0;m/s; total sprinting distance covered, >7 m/s; maximum velocity) were analyzed. Results: Correlations were near perfect for all variables analyzed (r = .98–1.00), with a varied level of noise between RT and PED also (0.3–9.7% coefficient of variation). Conclusions: Locomotor activities and PlayerLoad can use both RT and PED concurrently to quantify a player’s physical output during a training session. Caution should be taken with higher-velocity-based locomotor activities during RT compared to PED.

scholarly journals High-Speed Transmission in Long-Haul Electrical Systems

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Beatriz Juárez-Campos ◽  
Elena I. Kaikina ◽  
Pavel I. Naumkin ◽  
Héctor Francisco Ruiz-Paredes
Keyword(s):  
Fourier Transformation ◽  
High Speed ◽  
Large Time ◽  
Large Time Asymptotics ◽  
Electrical Systems ◽  
Time Asymptotics

We study the equations governing the high-speed transmission in long-haul electrical systems i∂tu-1/3∂x3u=iλ∂xu2u, t,x∈R+×R, u0,x=u0x, x∈R, where λ∈R,  ∂xα=F-1ξαF, and F is the Fourier transformation. Our purpose in this paper is to obtain the large time asymptotics for the solutions under the nonzero mass condition ∫u0xdx≠0.

Arc flash mitigation using active, high-speed switching

2014 ◽  
Author(s):  
Michael D. Divinnie ◽  
James K. Stacy ◽  
Antony C. Parsons
Keyword(s):  
High Speed ◽  
Arc Flash ◽  
High Speed Switching

scholarly journals Arc Flash Mitigation Using Active High-Speed Switching

2015 ◽  
Vol 51 (1) ◽  
pp. 28-35 ◽  
Author(s):  
Michael D. Divinnie ◽  
James K. Stacy ◽  
Antony C. Parsons
Keyword(s):  
High Speed ◽  
Arc Flash ◽  
High Speed Switching

A Precise and High Speed Charge-Pump PLL Model Based on SystemC/SystemC-AMS

2012 ◽  
Vol 58 (3) ◽  
pp. 225-232
Author(s):  
Kezheng Ma ◽  
Rene Van Leuken ◽  
Maja Vidojkovic ◽  
Jac Romme ◽  
Simonetta Rampu ◽  
...  
Keyword(s):  
High Speed ◽  
Design Environment ◽  
Electrical Systems ◽  
Measurement Results ◽  
Charge Pump Pll ◽  
Simulation Results ◽  
The Cost ◽  
Signal Modelling ◽  
Beta Version ◽  
Simulation Time

Abstract The Phase Locked Loop (PLL) has become an important part of electrical systems. When designing a PLL, an efficient and reliable simulation platform for system evaluation is needed. However, the closed loop simulation of a PLL is time consuming. To address this problem, in this paper, a new PLL model containing both digital and analog parts based on SystemC/SystemC-AMS (BETA version) is presented. Many imperfections such as Voltage Control Oscillator (VCO) noise or reference jitter are included in this model. By comparing with the Matlab model, the SystemC/SystemC-AMS model can dramatically reduce simulation time. Also, by comparing with Analog Devices ADI SimPLL simulation results, Cadence simulation results and real measurement results, the accuracy of the SystemC/SystemC-AMS model is demonstrated. The paper shows the feasibility of a unified design environment for mixed-signal modelling based on SystemC/SystemC-AMS in order to reduce the cost and design time of electrical systems.

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