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The design space exploration of Networks-on-Chip (NoC) requires tools to evaluate the network performance, tune its parameters and achieve the requirements of the target application. In this context, this paper presents RedScarf, a simulation environment with graphical user interface and a set of tools that automate the design space exploration of NoCs. It presents many resources that make RedScarf...
Overcurrent or overvoltage problems caused by DC line faults endanger the security of modular multilevel converter based high voltage direct current (MMC-HVDC) system. To improve the reliability of fault identification for MMC-HVDC transmission lines, a novel pilot protection scheme based on DC power difference is proposed in this paper. Characteristics of the DC power difference between positive...
An original and modern integrated current sensor is designed and presented in this paper. It can provide a sense current proportional to an output current available to the microcontroller via an external resistor. The ratio between output and sense current is modeled and simulated. The errors between the two currents increase in low currents domain. A solution consisting in a gate back regulation...
This paper presents a guidance law design for synchronized path following of multiple underactuated unmanned surface vehicles (USVs) without using a global reference velocity. Firstly, a distributed observer is proposed to eliminate the need of reference velocity known to all the vehicles. Secondly, a line-of-sight based guidance law is derived to force each vehicle to follow a parameterized path...
In order to achieve the integration of ac/dc output in the aircraft power system, a novel single-input/dual-output indirect matrix converter (IMC) is proposed in this paper. Based on the fact that a real dc-link is formed in IMC, the proposed topology realizes dc output by inserting a simple two transistor forward converter (TTFC) into the dc-link. Its modulation strategy is composed of two parts,...
Paper deals with LCLC converter with DC output. Both current and voltage sourced output rectifiers are considered. The performance investigation is focused on the nominal and overload operation conditions. Several differences are discovered during transient and steady — state analysis. Most significant is the existence of "zero-voltage interval" (ZVI) at the parallel resonant tank of the...
This paper analyzes the transmission efficiency of two kinds of communication technologies: summation frame and individual frame. The abstract models for these two communication technologies using linear topology, which is the most popular topology in industrial control field, are proposed in this paper. The simulation results based on the models show that summation frame has a significant performance...
A U-band oscillator is presented as a divide-by-two direct injection-locked frequency divider (ILFD), with NMOS injection transistors coupled to the LC oscillator. Compared with the both NMOS and PMOS injection transistors, the NMOS only injection transistors contribute to a much wider locking range. The strategy to choose the structure and sizes of the injection transistors for symmetry and the locking...
It is suggested to use the topological task for select the placement of distributed generation source. A topological task can not be solved by methods of functional analysis, because it is a problem with variable parameters. The algorithm of modeling for solving the topological task is proposed. The solution of the topological problem is significantly influenced by the parametric features of the object,...
Traditional Z-source inverter can boost or buck voltage for its unique impedance network, but also has its own drawbacks, such as input current is not continuous, boost capacity is limited, the capacitor voltage stress is large and etc. In order to overcome the shortcomings of the traditional Z-source inverter, a series of Z-source inverters are proposed. In this paper, the topology of three kinds...
Recent rapid scale out of high performance computing systems has rapidly and continuously increased the scale and complexity of the interconnects. As a result, current static and over-provisioned interconnects are becoming cost-ineffective. Against this background, we have been working on the integration of network programmability into the interconnect control, based on the idea that dynamically controlling...
Misalignment during wireless charging of EVs can lead to low efficiencies (<85%) of power transfer which can lead to thermal issues and high leakage fields. This paper explores the most optimal solution towards a misalignment tolerant system. To that end, a DD-DDQ coil system with series-series compensation combined with an impedance matching control algorithm is explored. A multi-objective optimization...
In this paper the calculations of the robustness of a network is addressed. After a brief description of the most relevant metrics, our Network Robustness Simulator(NRS) is presented as well as its structure and working model. The NRS computes the robustness I a dynamic scenario, it copes with multiple failures and different types of attack. In particular, the addition of the epidemic based model...
Next-generation 5G concepts are driving infrastructure providers to enable novel services for network operators, such as Virtual Network Function (VNF) and Network Function Virtualization (NFV). Inside a single infrastructure provider, several solutions are available to satisfy the 5G requirements using Software Defined Networking (SDN). However, emerging industry verticals require geographically-distributed...
Recent years, multilevel inverters have become more attractive for researchers due to low total harmonic distortion (THD) in the output voltage and low electromagnetic interference (EMI). This paper proposes a three-phase cascaded H-bridge quasi-switched-boost inverter (CHB-qSBI). The advantages of the proposed inverter are as follows: buck-boost voltage with single stage power conversion, reduced...
In this paper, an electronically tunable immitance circuit is proposed. The presented circuit can be configured as a tunable grounded inductor or capacitor multiplier. The proposed circuit employs a single active element called Voltage Differential Current Conveyor, a single resistor and a single capacitor. The presented circuit does not require element matching constraints. It is linearly tunable...
An incremental ADC (lADC) using parallel counting is proposed to achieve both high accuracy and power efficiency. By operating the IADC and the counting logic alternatively within two clock phases, the proposed scheme finishes a full conversion within fewer conversion cycles. The only additional circuitry for the parallel counting is a single comparator, much less than the add-ons in other multi-step...
It is believed that renewable energy can help to ease the shortage of fossil fuels, and to protect environment. Moreover, microgrid provides a practical way for renewable energy and electric vehicles to access the grid easily. In this paper, a PV hybrid DC/AC microgrid which based on the DC microgrid is proposed. It combines the advantages of simple control of DC microgrids and the novel uninterruptible...
Information centric networking (ICN) is one of the emerging Internet paradigms proposed to overcome the shortcoming of the current host-centric Internet. With ubiquitous in-network caching, ICN can facilitate content delivery and reduce network delay. In this paper, we propose a novel collaborative caching scheme based on routers' position to cache popular videos on the edge routers which are closer...
This paper investigates the collision avoidance problem in formation control. First, a collision avoidance algorithm is proposed by using the gradient-based method. Then, a collision-free consensus based formation protocol is developed for a group of second-order systems with the aid of graph theory. In particular, the formation protocol is designed only based on the relative information obtained...
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