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Reproducing complex networks with features of real-life networks is exciting and challenging at the same time. Based on the popular Omnet++ discrete event simulator, we introduce Armonia, a framework for modeling massive networks and their dynamic interactions. It includes a collection of topology generators, a set of resource placement and replication modules, a component for specifying resource...
Wind technology is one of the fastest developing renewable technologies. Squirrel cage induction generator (SCIG) with back to back fully rated converter used for wind energy conversion systems (WECS) is a meritorious option among its class. SCIG's offer advantages of being robust, suitable for any harsh environment, cheaply available and unsophisticated than the other types available. To enable increased...
Reproducing complex networks with features of real-life networks is exciting and challenging at the same time. Based on the popular Omnet++ discrete event simulator, we introduce Armonia, a framework for modeling massive networks and their dynamic interactions. It includes a collection of topology generators, a set of resource placement and replication modules, a component for specifying resource...
In this work, we analyze the design and simulation of the electrical operation of a photovoltaic (PV) system adapted by a numerical intelligent controller (MPPT controller) ensuring the pursuit of the maximum power supplied by the photovoltaic generator despite the change of weather conditions. Particularly, we present the effect of meteorological conditions on the performance of a photovoltaic generator...
There is now general acceptance that the burning of fossil fuels is having a significant influence on the global climate. In this scenario renewable energies will have to contribute in energy diversity and security of supply. That the world's ever knows a similar rising need of energy. Wind energy is a promising technology and becomes more and more interesting player on the market of energy production...
This paper presents algorithms to determine efficient trades in a deregulated electricity market model. In the electricity market model, combination of agents represents four types of market participants: public utilities, independent power producers, retailers, and consumers. By utilizing network flow, our algorithms discover efficient trades satisfying constraints on supply and demand in the electricity...
A low-power configurable design for an asynchronous SAR ADC that is suitable for analog front-end of sensor ASICs is presented. The proposed architecture employs a majority vote based comparator capable of providing programmable noise performance. The proposed asynchronous digital logic determines the majority vote by employing two counters at the comparator differential output. Simulation result...
In this paper, a new method for blind recognition of BCH code from an intercepted sequence of noise affected codewords is proposed. The proposed method recovers the parameters of a BCH code by finding the roots of it's generator polynomial. Firstly, the Galois Field Fourier Transform (GFFT) operation is carried out for each sequence of an estimated length. Then, find the positions of common zero spectral...
The global energy demand requires alternative resource from the fossil fuels and nuclear fission. Ocean energy should take in charge of a key role in renewable energy due to the high density and vast amount of its energy in the near future. In particular, an oscillating water column-wave energy converter (OWC-WEC) is one of the most promising devices to capture energy from the ocean waves. This kind...
The output voltage characteristics of a thermoelectric generator were analyzed to suppress heat leakage for low-temperature waste-heat thermoelectric generation. The experimental results show that the pre-cooled thermoelectric device output a higher voltage than the reference device. The experimental results also show that the influence of heat leakage took a longer time to appear using the pre-cooled...
A novel adaptive off-time (AOT) technique, which is applicable to the circuit design of an AC-DC constant-current LED driver using hysteresis-current control method, is proposed in this paper. The AOT is achieved by a novel off-time control method, which is based on the combination of peak-current-loop and error sample feedback-loop, to solve the problem that peak current is not consistent with average...
In this paper, a novel architecture for charging mode controller of Li-Ion battery charger is proposed. It is design to generate stable control signals even when noise level reaches several tens of millivolts. The trickle current is as low as 200mA enabling longer life cycle for Li-Ion battery. The large current reaches 1A without any impact on trickle current offering a faster charging time for Li-Ion...
In ADC BIST testing circuit, ramp signal is the most widely used stimulus because of its simple structure and ease of control. In addition, with SEIR algorithm, the linearity requirement of the ramp signal is highly relaxed. But for high resolution ADC BIST testing, the ramp signal must be repetitive for acquiring valid data because a single ramp will cost large area, which is not acceptable for BIST...
In today's VLSI world, the designers concentrate on low power design, neglecting the test methodology. Defining low power test methodology is the need of the day. In this paper, Microcode based Asynchronous P-MBIST is implemented, measured and compared with similar feature Synchronous PMBIST. The implemented core has given Power, Area advantage of 95.44%, 23.95% respectively but with increased Timing...
Architectural vulnerabilities in basic analog circuits that can be exploited to embed analog hardware Trojans are identified. Challenges of detecting the presence of analog hardware Trojans are discussed. An example is presented of a simple widely used reference generator that incorporates an embedded analog hardware Trojan that requires no extra circuit components, no area overhead, and that leaves...
In order to realize the pressure energy harvesting of pneumatic system, a novel pneumatic-piezoelectric generator is proposed in this paper. The bending deformation of piezoelectric plate is induced under the impact of air supply pressure. The transformation from pressure energy to electric energy is realized based on direct piezoelectric effect. The simulation analysis of flow field distribution...
Economic dispatch problem (EDP) is an optimization problem with the objective to minimize the total generation cost subject to the power balance constraint and generator capacity limits. Typically, EDP is solved in a centralized manner, however, recently, several consensus-based algorithms have been proposed to solve EDP in a distributed manner. In these algorithms, it is assumed that information...
This paper presents a two-step modified priority list (MPL) based mixed integer linear programming (MILP) method for improving the computational speed of unit commitment (UC) programs while preserving optimality. In the first step, the heuristics of UC results for a given generation fleet are investigated to develop the MPL. A subset of the generators are determined to be online (committed) or offline...
The increasing connection of distributed generators to distribution network have greatly impacted on the performance peculiarity of both power source and electric load. In order to coordinate the operation between source and load, a demand side management operation strategy is discussed in this paper, based on the technical characteristics of active distribution network and differential electricity...
Most utilities use a standard small generator interconnection procedure (SGIP) process that includes a screen for placing potential PV interconnection requests on a fast track that do not require more detailed study. One common screening threshold is the 15% of peak load screen that fast tracks PV below a certain size. This paper performs a technical evaluation of the screen compared to a large number...
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