The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper proposes a method to use the Fibonacci numbers with odd and even indices for synthesis of switched capacitor converters (SCCs) with multiphase control. As in the previously developed method using high-radix positional numeral systems, the capacitors in the proposed method can be connected in parallel. For this purpose, a special two-dimensional (2D) array of switches is introduced. Thus,...
This paper proposes a topology optimization method for dual-threshold (DT) independent-gate (IG) FinFET circuits. In the proposed method, a node extraction algorithm is developed to extract the characteristic nodes of a BDD expression, which are suitable to be realized with the compact logic gates based on the DT IG FinFET devices, and then the equivalent replacement program that these extracted characteristic...
Energy Router(ER), as the key technology of Energy Internet (EI), is raising more attention in recent years, especially in distribution network. However, little work has been done for simplified models of ER, which will greatly improve the combined simulation speed of ER and distribution network. This paper proposed a simplified model based on a 10kV/40MVA multi-port Energy Router utilized in 10kV...
This paper is concerned with the process of current commutation and overvoltage protection in matrix converters. The mechanisms involved in the commutation process and clamp circuit are described and simulation waveforms are presented. A four-step semi-soft commutation strategy is described that this technique relies on knowledge of the output current direction and the ability to control the direction...
A novel brushless hybrid-excitation axial flux machine (BHAFM) is investigated in this paper. It is designed for electric vehicle which requires the ability of wide speed range and high starting torque of machine. Adopting the special structure of claw poles, BHAFM realizes the function of hybrid-excitation without brush and slip ring. Meanwhile, contrasted with traditional permanent magnet synchronous...
An improved readout circuit interface for ion-sensitive field-effect transistor (ISFET) is proposed in this work. When compared with conventional topologies found on the literature, the proposed ISFET readout circuit presents at least two advantages. The first concerns the simplicity of the new circuity topology, and the second is the additional gain conferred to the sensor output signal. The performance...
An investigation is carried out to assess the conducted emission (CE) in a wireless power transfer (WPT) system for automotive applications. The assessment is performed by simulations of the whole system which is modeled by a circuit representation of each single subsystem, including the coupled inductive coils, compensation networks, converters and terminations. The obtained circuit model is analyzed...
This paper deals with core-cutting method effects of single phase 1-KVA transformer on its inrush current. Different core-cutting topologies of transformer which is EI and EE were studied. Finite-element method and equivalent circuit based simulation were done to understand its effect on inrush current of transformer. Equivalent circuit is used to obtain the peak value of inrush current. Meanwhile...
A comparative analysis of the plug-in fuel cell vehicles (PFCV) is studied regarding different topologies, drive cycles and control strategies. To improve the performance of the PFCV, an optimization strategy is proposed at first by regulating the power distribution between the battery and the PEMFC system. Then, a direct multiple shooting (DMS) algorithm is used to solve this nonlinear programming...
Electric drives of high power applications require power electronic converters of high power rating. To meet this requirement, the multilevel inverter concept has been introduced for medium voltage and high power applications. The multilevel inverter became popular because of its advantages like low harmonic distortion, less rate of change of voltage (dv/dt) and it reduces the bearings stress of a...
An unconventional circuit modelling for 3D multilayer printed circuit board (PCB) is developed. The modelling methodology uses the tensorial analysis of network (TAN) approach. The multilayer PCB TAN model is based on the modified Kron's formalism. This unfamiliar circuit modelling is first time applied to the multilayer PCB interconnect modelling. After the diakoptics analysis of the proof of concept...
This paper describes the use of genetic algorithms to generate power processing circuits. In order to speed up the algorithm, the fitness of the circuits is evaluated using an explicit integration method based on the 4th order Adams-Bashforth formula. Different combinations of genetic primitives for the crossover and mutation processes have been tested. The algorithm is demonstrated by generating...
The Performance of battery packs is highly affected by imbalances between the series connected cells that provide the required string voltage. A modular battery implementation based on cascaded converters can have advantages over traditional centralized battery systems with add-ons active/passive balancing techniques. This paper investigates the use of a modular battery integrated within a cascaded...
Poly-phase systems have been used for many years in machines and recently in wind power generations. They usually are built by a dual three-phase system, shifted by 30 electrical degrees from each other and with no neutral connection. Typically, this system employs a twelve-pulse diode rectifier to converter ac to dc voltages. However, it may be improved if an active rectifier is used, because it...
The design and characterization of a K and Ka band differential four ways power divider/combiner based on Wilkinson like topology, implemented in a 0.25 μm SiGe BiCMOS technology are presented in this paper. The wide band device presents, on the frequency range 20–38 GHz, a transmission coefficient better than −8.6 dB, a 2.6 dB additional loss over the ideal case. The input/output reflection coefficient...
Based on the Cockcroft-Walton (CW) voltage multiplier, a novel receiver topology for IPT (Inductive Power Transfer) system is proposed. The proposed receiver topology enhances the efficiency of the IPT system through achieving that the induced secondary voltage and current are in-phase with the appropriate control method. This paper carried on the modeling of the receiver topology, and deduced the...
This paper proposes a power electronic transformer based on a capacitive coupler. The coupler consists of four plates which are parallel-placed very closely. And there is a dielectric layer between each two plates to increase the capacitance value. The two plates on the same side are placed close to each other to maintain a large capacitance. The system topology is symmetrical to achieve bi-directional...
The increasing penetration of distributed generation (DG) could cause positive and adverse impacts on distribution power grids. The study of these effects could lead to methodological guidelines for sizing and location of renewable energy sources. In this paper several simulations of a distibution system of MV with different locations and penetration levels of DG are performed. Performance parameters...
In this paper, a III-V nanowire TFET technology platform is compared against the predictive technology models of FinFETs at 10 nm node by evaluating the performance of two different comparator topologies. Furthermore, the potential of a hybrid FinFET/TFET approach in multi supply voltage design is addressed by considering level shifter circuits. Both analyses confirm that III-V TFET represents a promising...
Here we discuss synaptic temporal integrators capable of computing plasticity functions between principal neurons which are inhibitory to yield a useful network dynamic. We model inhibitory spike-timing-dependent plasticity (iSTDP), parameterized by two thresholds of a pre- and post-synaptic leaky integrator. Because inhibitory synapses between principal neurons do not occur onto spines, but instead...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.