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Due to the increase of the operating frequency and the complexity of modern microwave circuits, transient hybrid field-circuit simulations have aroused great interest in the field of heterogeneous electromagnetics such as signal integrity/power integrity (SI/PI), electromagnetic compatibility/electromagnetic interference (EMC/EMI), etc‥ A novel transient field-circuit cosimulation method based on...
A novel transient field-circuit cosimulation method based on the discontinuous Galerkin time domain (DGTD) method and circuit behaviour macromodels for heterogeneous electromagnetics such as EMC problems is proposed. The traditional field-circuit simulation method needs to know the detail of the circuits, which cannot handle problems with unknown systems due to IP protections. To overcome this problem,...
The conducted EMI simulation plays an important part in the SMPS in the product design. The analysis of common mode noise is much more complex than differential mode noise. The CE simulation accuracy depends on the accuracy of CM mode noise. CM noises are determined by the electric coupling between the voltage jump point and the ground. Traditional the CM models of the electric coupling between the...
Due to mismatch in the coefficients of thermal expansion of silicon and copper, mechanical stresses in surrounding silicon are induced near TSV in 3D ICs. In this paper, the mobility variance of substrate material caused by TSV-induced stress is researched. Firstly the semi-analytical model for TSV-induced stress distribution is introduced. An analytical model for TSV-induced stress distribution is...
Due to mismatch in the coefficients of thermal expansion of silicon and copper, mechanical stresses in surrounding silicon are induced near TSV in 3D ICs. In this paper, the mobility variance of substrate material caused by TSV-induced stress is researched. Firstly the semi-analytical model for TSV-induced stress distribution is introduced. An analytical model for TSV-induced stress distribution is...
The risk assessment for power system is becoming an important and mandatory task in planning and operation. The traditional risk assessment determines whether the system is secure or not in the present state and lack of identifying the risk level. This paper presents a multi-stage overloading identification method for risk assessment in smart distribution network with historical, real-time and forecasting...
The large-scale wind power may influence the stability of the power system when its penetration level exceeds some limit and some disturbance as the short circuit happen. To study and preview this phenomenon before connect the wind farm into the grid, the use of simulation method has been a good tool. This paper evaluated the stability analysis of the power system in Santiago Island, Cape Verde, considering...
To distinguish between a pair of transition faults, we need to find a test vector pair (LOC or LOS type)that produces different output responses for the two faults. By adding a few logic gates and one modeling flip-flop to the circuit under test (CUT), we create a diagnostic ATPG model usable by a conventional single stuck-at fault test pattern generator. Given a transition fault pair, this ATPG model...
A diagnostic automatic test pattern generation (DATPG) system is constructed by adding new algorithmic capabilities to conventional ATPG and fault simulation programs. The DATPG aim to generate tests to distinguish fault pairs, i.e., two faults must have different output responses. Given a fault pair, by modifying circuit netlist a new single fault is modeled. Then we use a conventional ATPG to target...
A diagnostic automatic test pattern generation (DATPG) system is constructed by adding new algorithmic capabilities to conventional ATPG and fault simulation programs. The system generates tests to distinguish between fault pairs through different output responses. Given a fault pair, by modifying circuit netlist a new single fault is modeled and targeted for detection by a conventional ATPG. The...
In diagnostic testing faults detectable by test vectors are partitioned into groups. This partitioning is such that a fault is distinguishable from faults in all other groups, but is indistinguishable from those in its own group. Diagnostic fault coverage (DC) is defined as the number of fault groups divided by the total number of faults. We present a new diagnostic fault simulation algorithm that...
The battery/supercapacitor hybrid energy storage system actively combines two energy storage devices to achieve better power and energy performances. This paper presents a detailed small-signal mathematical model that can represent the dynamics of the converter-interfaced energy storage system around the steady-state operating point. This model takes into account the effects on the currents of a variety...
The memristor has drawn the worldwide attention sine HP laboratory released its invention on May 1, 2008 at Nature Letters. Since then many researchers are taking efforts to find its applications in various areas of the information technology. A good model will help to study and seize the behavior characteristics of memristor. In this paper, we proposed a piecewise line approximated memristor model,...
Numerous benefits promote the proliferation of renewable and distributed energy resources in power grids. Some recent research has focused on the concept of microgrids, in which a number of renewable energy sources can be connected together to supply power to customers as a complement to traditional power sources or as main power sources. In a microgrid, multiple distributed energy sources are operated...
In this paper, a new frame-layer rate distortion model is introduced. It is divided into rate model and distortion model as a function of quantization step. Comparing to exiting models, this model offers some new features. First, it made an analysis on the relationship between the frame layer temporal activity and the shape of rate distortion curve, so it could better adapt to the characters of the...
The characteristic of instant customerization (IC) production model and its job-shop scheduling problem is described. Considering the conventional algorithmspsila low efficiency of search especially global search, PSO-based to job shop scheduling problem of IC is presented. According to the characteristics of the problem, the PSO coding and optimization are studied to determine the way of coding and...
Calculation of over-voltage distribution of transformer windings under very fast transient over-voltage (VFTO) is very important to insulate design of transformer windings. In order to investigate over-voltage distribution of transformer windings under VFTOs, firstly in the case of easily destroyed former several windings, each winding is modeled as one unit, others are modeled using two windings...
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