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This paper proposes an equivalent model of the coupling capacitance between TSVs and adjacent RDL. Based on the scalar potential integral equation and cylindrical accumulation mode basis functions, an efficient method of extracting the coupling capacitance is present. The scalability of the proposed model is verified by simulation and our results show that an accuracy of 10% is achieved from the analytic...
We have proposed a power supply circuit and an electrical interconnect test method based on charge volume supplied from the power supply circuit. We optimize the supply circuit so as for small resistive open defects that occur at interconnects among dies in 3D stacked ICs to be detected by the test method. We examine what resistive open defects can be detected with the optimized power supply circuit...
In this paper an electromagnetic (EM) simulation assisted parameters extraction procedure is demonstrated for accurate modeling of down-scaled transferred-substrate InP HBTs. The external parasitic network associated with via transitions and device electrodes is carefully extracted from calibrated 3D EM simulations up to 325 GHz. Following an on-wafer multi-line Through-Reflect-Line (TRL) calibration...
The paper presents a comprehensive charge modelling approach for field-effect transistor (FET) devices. For the first time an artificial neural network (ANN) is combined with the division-by-current approach to FET charge modelling. Using this technique a large-signal charge model is extracted for a 10 W GaN device from MACOM. It is shown through measurements that excellent results may be obtained...
In this paper a 27-Level Asymmetric Multilevel STATic COMpensator is presented aimed to compensate reactive power. The STATCOM is controlled with a master-slave approach, where the master loop is responsible to regulate the DC voltage using a Proportional-Integral controller, while the inner loop is in charge to track the reference currents through a Proportional-Resonant control block. The presented...
In high-power converters based on SiC-MOSFET half-bridge modules, laminated busbar plays a critical role in linking the DC capacitor bank to power modules. The busbar stray capacitance has the same order of magnitude with drain-source capacitance of SiC-MOSFET and has a great impact on the turn-off voltage oscillation of SiC-MOSFET. In this paper, parasitic elements of a three-layer laminated busbar...
Enclosure circulation of Gas Insulated Switchgear (GIS) and Very Fast Transient Overvoltage (VFTO) are harmful to many respects of power system, including system's security, stability and economic. The effective inhibition of GIS enclosure circulation and VFTO has attracted wide attention. In this paper, GIS enclosure circulation and transient ground potential has been modeled and analyzed. Firstly,...
The paper presents an original concept for interfacing of tensoresistive and capacitive force sensors with applications in modern microelectronics systems. In the first part, the authors show the results and conclusions of a PSPICE simulation for an original patented circuit. The used simulations models were introduced in some circuit components corresponding to the realistic behavior implementation...
This paper describes the effect of MOSFET internal capacitances on the channel current during the turn-on switching transition: an intrinsic theoretical switching speed limit is found and detailed mathematically. The set of analytical equations is solved and the effect of the displacement currents is highlighted with ideal simulated waveforms. A laboratory experiment is thus performed, in order to...
This paper is focused on the dynamic modelling of the polycrystalline silicon wafer-based photovoltaic cells under various operational and fault conditions. The models are drawn from the impedance changes observed using electrochemical impedance spectroscopy. In this paper, tests were carried out at different voltage bias levels under illumination, dark, uniform partial shading, and cell-mismatch...
To solve the simulation convergence problem of Silicon Carbide metal-oxide semiconductor field effect transistor (SiC MOSFET) models, this paper proposes a non-segmented model for SiC MOSFETs, which uses non-segmented, smooth continuous equations to describe the static and dynamic characteristics of SiC MOSFET. Further, the static characteristic of SiC MOSFET obtained by the non-segmented model is...
Well logging technology is of great significance to oil production. A new lateral resistivity logging-while-drilling (LWD) method applied in oil-based drilling fluid condition is proposed in this paper by combining capacitive coupling with inductive coupling principle. By using a new logging model, the ineffectiveness of the conventional resistivity LWD methods in oil-based drilling fluid is overcome...
Microbial fuel cells (MFCs) are sources harvesting energy from organic matters and showing great promise in powering environmental sensors. Because of the low power and voltage issues (100μW at 0.3V for 20 cm2 electrodes), an electrical interface is required to extract the maximum power delivered by the MFC and boost the output voltage. However the switching operation of most converters induces a...
We evaluate the flying capacitor multilevel converter (FCMC) with one switched-capacitor cell under asymmetric working condition, as a highly efficient hardware realization for the virtual infinite capacitor (VIC). The VIC is a type of electronic circuit, recently introduced to replace large, expensive and unreliable electrolytic capacitors, mainly intended for smoothing random fluctuations of a DC...
Energy storage cells have been widely used in many applications. Depending on the application, energy storage cells are connected in series to match the voltage requirement. Each the energy storage cell has individual differences such as internal impedance and self-discharging, which cause cell voltage imbalance. This paper proposes a switched capacitor voltage equalizer. The proposed equalizer combines...
Researches on electromagnetic repulsion mechanisms are drawing more and more attention globally. The objective of this paper is to develop an electromagnetic repulsion mechanism for a 40.5 kV vacuum circuit breaker and then to make an optimization. Design of experiments (DOE) method are used to screen the prominent factors. Result shows that three impact factors are the prominent factors, which include...
This paper presents a novel procedure to determine the internal gate-source voltage inside a multi-chip power module using the example of a SiC half bridge module. Based on the lumped elements of the gate circuit calculated by a quasi-static electromagnetic simulation, each field-effect transistor is represented by a single, voltage dependent capacitor. The procedure is validated by clamped inductive...
Supercapacitor, as a new type of energy storage device, has broad application prospect in the power system and others. It is very significant to establish an accurate model to reflect the actual job characteristics for supercapacitor reasonable use, performance optimization and system simulation. This article summarizes all kinds of supercapacitor model, points out the characteristics of the existing...
This paper compares simulation results of a negative impedance converter (NIC) obtained from a circuit-only and circuit-electromagnetic (EM) co-simulation to demonstrate the impact of parasitic effects. The NIC is designed to produce a negative capacitance by cross-coupling two field-effect-transistors. In the circuit-EM co-simulation, the bulk of the transistors and other components are exactly modelled...
A simulation system of distribution network design and development based on similarity principle is introduced. This simulation system includes primary simulation system and secondary control system, the primary system simulates a 10kV neutral indirectly earth distribution system, which includes a bus, four feeders with different types and different length. System structure and parameter calculation...
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