A5101666397- Advanced MEMS and NEMS Technologies
- Mechanical and Optical Resonators
- Non-Invasive Vital Sign Monitoring
- Magneto-Optical Properties and Applications
- Magnetic Field Sensors Techniques
- Flow Measurement and Analysis
- Microgrid Control and Optimization
- Multilevel Inverters and Converters
- Radar Systems and Signal Processing
- Energy Harvesting in Wireless Networks
- Islanding Detection in Power Systems
- Wireless Body Area Networks
- Building Energy and Comfort Optimization
- Advanced Fiber Optic Sensors
- Electrical and Bioimpedance Tomography
- Wireless Power Transfer Systems
- Image and Signal Denoising Methods
- Speech and Audio Processing
- Advanced SAR Imaging Techniques
- Acoustic Wave Resonator Technologies
- Sensor Technology and Measurement Systems
- Underwater Vehicles and Communication Systems
- Silicon Carbide Semiconductor Technologies
Northwestern Polytechnical University
2024
State Grid Corporation of China (China)
2021
Abstract This paper analyses the formation mechanism of transmission distortion electronic voltage transformer, and points out that integrator will magnify transient transfer error superimpose dynamic additional component on output signal, which may cause signal in serious cases. To restrict transformer variable effect distance relay, a relay method using instantaneous value after equal processes is proposed. It directly uses differential signals capacitor divider Rogowski coil. The coil are...
The Rogowski coil transducer's integrator will amplify the transmission error, which may lead to mal-operation of relay. In this paper, a novel method line relay based on differential output is proposed. Besides, an improved fast distance presented. Based equal transfer process lines(ETPTL), voltage signal should be processed by virtual solve inconsistent problem between and current. Furthermore, paper also presents reconstruction at fault point least-square algorithm R-L equation, so as...
The 4H-SiC material exhibits good detection performance, but there are still many problems like signal distortion and poor quality. low gain avalanche detector (LGAD) has been fabricated for the first time to solve these problems, which named SICAR (SIlicon CARbide). results of electrical characteristics charge collection performance LGAD reported. influence different metal thicknesses on leakage current device is studied.~By optimizing fabrication process, reduced by four orders magnitude....
The corresponding development of resonance mass beam pressure sensor in decades is introduced and a serial theory analysis executed. advantages disadvantages are studied on the sensor. Through finite element software ANSYS, stress strain distribution situation obtained this paper. Under outside overload situation, we find that linearity presents declining but small range. From total performances sensor, it still keeps good condition. 260 times rang pressure, chip deformation only 14.5um,...
In this study, a cascaded single-phase converter topology is proposed for microgrid integrated into high-voltage power distribution systems. system, the lower works in voltage controlled mode to reduce harmonic distortions of supply local critical load. At same time, upper placed between main grid and output converter. Alternatively, cell current block pollutions from non-linear Through collaborative control converter, system can provide active filtering both current, but without any...
Silicon micro resonant pressure sensor and accelerometer are kinds of new gauging instruments. Both the silicon have particular advantages become key development direction sensors. The introduction is carried out first in this paper. work theory tendency discussed detail. And then, studied. research statuses beam taken to analysis
Wireless power transfer brings the possibility of connector-free for electric devices. Because there is no connection between source and load, system employs wireless based on magnetic resonance becomes safer, more convenient reliable. The four-coils resonances analyzed, including phenomenon frequency splitting, effect angle coil device coil, external objects. Simulation results are presented in this paper.
In this paper a feasible model is proposed to achieve indoor-outdoor detection using high-frequency power consumption data. Many tools can be applied analyze habits, among which wavelet transform an effective one. A method based on sliding window strategy used detect status. This then evaluated in supply region Hangzhou and proved accurate. Compared with other methods that are widely used, able handle data thus has good performance.