Abstract Resistive switching (RS) devices are widely believed as a promising candidate for next generation nonvolatile resistance random access memory. Here, Zn 2 SnO 4 -sheathed ZnO core/shell heterostructure nanowires were constructed through polymeric sol–gel approach followed by post-annealing. The back-to-back bipolar RS properties observed in the Ohmic contact two-terminal based on individual nanowires. With increasing bias to about 1.5 V, it changes from high-resistance states (HRS)...

DC Superconducting fault current limiter (SFCL) can be used to reduce the of voltage source converter-based high-voltage direct (VSC-HVdc) transmission systems, thereby significantly reducing manufacturing difficulty and cost dc circuit breakers. The authors aim develop a 160-kV/1-kA resistive type SFCL, apply it in VSC-HVdc system Nan'ao China. In order verify feasibility research is divided into two stages, results first stage are presented. rated developed SFCL 160 kV 1 kA, respectively,...

GaN HEMT devices are sensitive to the single event effect (SEE) caused by heavy ions, and their reliability affects safe use of space equipment. In this work, a Ge ion (LET = 37 MeV·cm

This paper presents further research on the pulse-type magnetic flux pump (MFP). The MFP is used to excite a Bi-2223 double-pancake superconducting coil cooled by cryocooler. inductance of 76 μH. cryogenic structure optimized adding cold frame outside. powered dc voltage source. excitation effects are investigated changing input voltage. pumping current curves have been obtained with various from 2.0 5.5 V. fitting calculations show that saturated in high-temperature superconductor (HTS) 200...

In this paper, Silvaco TCAD software is used to simulate the buffer traps in AlGaN/GaN high electron mobility transistors (HEMTs), and its effects on breakdown performance key parameters of devices are investigated by changing position concentration acceptor layer. The results show that with increase trap concentration, capture electrons reduce off-state leakage current, which can improve voltage devices. At same time, as increases, ionized make a additional electric field near drain edge,...

A GaN high-electron-mobility transistor (HEMT) was simulated using the semiconductor simulation software Silvaco TCAD in this paper. By constructing a two-dimensional structure of HEMT, combined with key models such as carrier mobility, effects different state, incidence position, drain voltage, LET values, and angle on single-event transient effect HEMT are simulated. stands for linear energy transfer capacity particle, which refers to amount transferred by particle irradiated substance...

The large-scale use of electric vehicles will have a direct impact on the distribution network. vehicle charging power grid is different from traditional load. At same time, also distributed energy storage device. In city, as load, its mode has greater grid. When large number are connected to grid, there may be peak phenomenon, increasing difficulty shaving, and pressure construction. This paper analyzes puts forward reasonable control discharging behavior. Establish policy mechanism,...

30-core MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> superconducting wire with a diameter of 1.0 mm has been prepared by the conventional in-situ powder-in-tube (PIT) method. The metallographic analysis results show that good uniformity in both transverse and longitudinal directions, critical current (Ic) density (Jc) at 4.2 K 4 T reach 82.6 A 7.3 × 10 <sup xmlns:xlink="http://www.w3.org/1999/xlink">4</sup> A/cm...

In order to study the effect of active particles in plasma on combustion small rocket engines, characteristics chamber under different ionization levels fuel and oxidant were simulated. The results show that with increase degree oxidant, high temperature region advances proportion increases; pressure increases continuously, so as achieve increasing engine thrust. It shows ionized can shorten propellant ignition delay, improve efficiency chamber, making more fully; specific impulse.

The thermal characteristics of the power battery for pure electric vehicle are analyzed by means theoretical analysis and numerical simulation. Taking a soft pack lithium-ion as research object, structure liquid cooling board is optimized. results show that increasing number runners can improve heat dissipation effect board. Increasing cross-section area runner on high temperature area. inlet velocity further reduce difference battery. optimum conditions follows, nine, increased 0.15...

This paper presents a novel approach to monitoring the status of electrical equipment using Internet Things (IoT) and relaying-aided transmission technologies, where data rate is used as key metric for evaluating system performance. In this framework, relaying plays pivotal role, enhancing robustness efficiency in process. We employ optimal relay selection algorithms identify most effective assist transmission, thereby optimizing communication link between system. To provide comprehensive...

ABSTRACT The overactivation of transposable elements (TEs) is a significant threat to male reproduction, particularly during the delicate process spermatogenesis. Here, we report that zinc finger protein ZCCHC8—a key component nuclear exosome targeting (NEXT) complex involved in ribonucleic acid (RNA) surveillance—is required for TE silencing Loss ZCCHC8 results delayed meiotic progression and reduced production round spermatids (RS). We observed young long-interspersed element (LINE1, L1)...

Since cross-linked polyethylene (XLPE) insulated cables possess excellent insulation, mechanical and heat dissipation characteristics, they are widely used in the submarine cable transmission system, failure rate of them increases accordingly. Considering that usually unable to detect defects a close range, how quickly accurately locate faults becomes big problem, which directly affects operating stability reliability system. In this paper, method for locating typical based on frequency...

This paper shows a practical approach to GaN-based HEMT self-consistent electro-thermal simulation based on spectral-element method (SEM). The is proposed solve the heat transport equation in GaN-Based HEMTs. high-order basis functions employed are orthogonal, leading diagonal mass matrix and more sparse stiffness matrix. So updating of thermal field fully explicit when forward difference scheme for time discretization. Examples HEMTs, accumulation effects under impact periodic input voltage...

Because the electric vehicle charging and discharging facilities is a complex electrical system, factors that affect its energy consumption are very much. Firstly, structure of studied, equipment analyzed. Secondly, set data acquisition platform for established, which used to obtain information each key point system. The study provides basis influence vehicles on grid.

The high frequency current sensor is widely used in the partial discharge detection of electric power equipment. Transmission impedance most important technical indicators, mainly depends on coil turns, integral resistance and core performance. In conventional design sensor, choice magnetic performance depend experience, cannot be accurately designed, which very inconvenient. this paper, a new method based BP neural network was presented.

The causes of new energy vehicle safety accidents are complex and diverse, only from the surface monitoring data is not enough to deeply explore failure mechanism power battery accidents, it necessary extract characteristic parameters with certain physical significance operation big conduct feature engineering research. This paper combines actual practice, summarizes problems processing mechanisms for different data, digs deep into use characteristics, abnormal laws, mechanisms, etc....

SpaceWire is becoming a popular solution for satellite high-speed data buses, because it simple standard that provides great flexibility wide range of system requirements. This article introduces the driver design communication device based on embedded Linux, including analysis structure, interfaces between upper and lower layers responding strategy interrupts. In realization link, we choose mainstream developing platform realize camera capturing testing, analyse test result.