Networks-on-Chip (NoC) is an effective solution to inside on-chip communication problems. In recent years, the advancement of silicon industry and also the production of Carbone Nanotube antennas (CNTs), it is possible to use wireless antennas in the network on chip. This new communication structure is called a Wireless Network on Chip (WiNoC). Using the wireless antenna in multi-core chips led to the reduction in the latency and power consumption. In spite of higher bandwidth of the WiNoCs compared to wire NoCs; their performance can decrease significantly in absence of an effective Flow Control mechanism. In this paper, the Flow Control problem is investigated by using a mathematical model in the WiNoC. The aim of this study is showing a correct analysis of cores behaviors with the subject to capacity constraints of links and Flow rates. The simulation results of traffic pattern in the WiNoC show that the proposed Flow rate Control algorithm has been able to Control and adjust the Flow injection rate of each transmitter with acceptable convergence

A common method for Controlling a group of parallel converters in decentralized Control strategy structure in an island microgrid, the use is the droop-down characteristics of frequency ω-P and voltage E-Q. However, the problem with using this method is that the reactive power is not properly distributed (in proportion to the capacity of the micronutrients) between the micronutrients, which may lead to overload in the converters. Microgrids may also suffer from dynamic stability problems such as power fluctuations, which can be increased by switching between active and reactive power Control. To avoid this problem, the X / R ratio of transmission lines is an important parameter that should be carefully considered in the design of micronutrient Controllers. By linearizing and simplifying conditions, the Control system conversion function model becomes a single input-single output system, which is efficient enough to show the relationship between Control parameters such as slope of droop characteristics and derivative sentences, virtual impedance, and voltage Controllers. Using this model, stability conditions for different parameters are analyzed. Also, to improve power distribution stability, common droop strategies are modified by adjusting the slope as well as adding nonlinear sentence sections. This approach reduces the coupling between active and reactive power Control and reduces the dependence of power distribution on grid parameters such as the X / R ratio. To evaluate the reliability of the proposed model, the simulation results in a sample island microgrid in MATLAB software are presented.

This study focuses on fires in road tunnels in order to increase the level of security for users. This paper proposed numerical investigations carried out on a small scale tunnel model to study the fire-induced smoke Control by longitudinal and longitudinal-natural ventilation systems. We studied the effect of two ventilation systems on the temperature distribution and stratification of the pollutant to estimate the effectiveness of ventilation systems. The Flow is characterized by the temperature fields, temperature profiles and the Froude number. The numerical tool used is FDS (version 4.0). This numerical study requires validation with experiment and numerical results and comparison with the model developed by Kunsch J.P. to evaluate the critical velocity. However, good agreement with experimental results, it confirms the possibility of using this code in the problem.

Booster pump system (BPS) can Control the number of revolutions through an inverter by combining two or more vertical or horizontal centrifugal pumps in a series. Efficiency and energy savings, the most appealing aspects of booster pump systems, can be improved by Controlling the operating conditions of individual pumps by measuring the Flow rate of each pump. For improved operation, a booster pump system with a Flow sensor to detect individual pump Flow rates and a Control algorithm to manage each low and high Flow rate pump’s revolutions per minute are critical. To achieve this, first, the turbine-type Flow sensor was developed through computational fluid dynamics and experimentation. The Flow sensor was improved using computational fluid dynamics, and its accuracy was validated through experiments. The resulting Flow measurement accuracy of the designed Flow sensor was within 4%, with a measurement uncertainty of 0. 4%. In addition, an experimental pump facility was built and used to evaluate booster pump system performance to investigate the energy saving rate. Then, after driving one low-Flow rate pump at a set pressure, the Flow and frequency Control operation algorithm was used. This algorithm increased the allowed output of the drive pump by increasing the inverter’s frequency. When the frequency corresponding to the allowed output is achieved in the low-Flow rate pump rather than the high Flow rate pump, power savings increased due to the low-Flow rate pump’s extended drive range. The investigations on the developed system’s energy consumption revealed that the energy savings were approximately 6. 2% compared to the conventional system, depending on the system in question. The development of a booster pump system with a Flow sensor was tested, and it was found to be effective.

Modeling of generalized unified power Flow Controller (GUPFC), based on the static consideration, and has been presented in this paper used for power Flow Control.A Newton-Raphson load Flow program has been developed which includes comprehensive Control facilities and yet exhibits very strong convergence characteristics. The injection model, which is used to locate GUPFC suitably in the power system, is incorporated into an existing Newton-Raphson load Flow algorithm in polar coordinate. The modified Jacobian matrix and power mismatch equations are deduced based on the injection model of GUPFC to Control active and reactive powers and voltage magnitude in any combination or to Control none of them. Test results are presented on IEEE 30- bus system, which demonstrate the effectiveness of the proposed method.