To effectively diagnose open-circuit (OC) faults in the insulated gate bipolar transistor (IGBT) of a cascaded H-bridge rectifier (CHBR) real-time, this paper uses single-phase three-cell CHBR as an example. Through mechanism analysis, variation patterns capacitor voltage and grid current due to OC are defined. Based on this, DC threshold (VT) coefficient (CCV) introduced fault diagnosis indices, real-time method for is established. The robustness, accuracy, timeliness, universality proposed...

The interconnection network plays a vital role in improving the performance of modern computing systems. Traditional electronic interconnect is subject to latency, power consumption, and bandwidth problems. A low-power low-latency optical architecture proposed this paper cores memory. made up subnetworks using seven wavelengths. subnetwork constructed by some switching blocks, which are able provide memory access communication from all ranks at same time. Compared with traditional bus-based...

Owing to the influence of climate, cloud noise is one most disturbance factors in remote sensing image. Therefore, detection and removal has become a very important step before using MODIS data. In this paper, multispectral algorithm based on spectral character threshold used detect cloud, then, different methods remove be according thickness images. At same time, order compensate for defects removing methods, improved homomorphism filtering replacement method are selected Finally, it found...

With the increasing number of integrated processor cores on a single chip, bandwidth, speed, and power consumption electrical interconnect cannot meet needs researchers. As new technology, optical has become an alternative scheme for interconnection. However, traditional supply strategy laser brings lot static loss, which will factor that be ignored in development interconnect. In this paper, we propose dynamic source based autoregressive moving average model, can reasonably adjust size by...

An optimized optical router is proposed in this paper for mesh-based Optical Network-on-Chip. The new 5 × employs lower number of microring resonators and better utilization based on Crux router.

Based on PSCAD/EMTDC, the authors build a harmonic analysis model for bi-pole dual 12-pulse ±1000kV Ultra-High Voltage Direct Current (UHVDC) converter and interconnected AC system. The control strategy UHVDC employs current margin from CIGRE HVDC Benchmark. system includes equipments above 500kV equivalent circuit under 500kV. interaction of DC propagation harmonics in are studied with different operation mode. Simulation results illustrate existence amplification. Following guidelines...

Optical interconnects outperforms the traditional electrical with lower power consumption, higher bandwidth density and scalability. We propose a scalable optical interconnect for on- chip core-to-memory communication. The key part of is switching blocks, which use less microring resonators different wavelengths to provide parallelism memory access demonstrate 4-port block six resonators. experimental results show average insertion loss 6.956 dB.

Laser energy cost is one of the primary budgets in integrated photonic switching systems. Traditional switch testing injects random traffic to switches, which only generates a "static" laser result. However, laser's per bit performance fluctuates due different process mapping scenarios applications. In this paper, we did experiments study influence application's on switches' injection traces. Then built model show connection between traces and performance. To get fluctuation results quickly...

The on-chip interconnection network is an emerging and a promising candidate for multi-core computing system's packets transmission. Fast evaluation of optical design critically important at the very beginning building network-based system. Network bandwidth, average latency, power consumption because devices can be obtained from evaluation. Therefore, accuracy critical. In this paper, we reveal that traditional traffic models cannot reflect main characteristic application workloads. By...

In recent years, the study of haze has become a hot topic because fog problems have more and serious. Under condition infrared visible light, we calculated scattering properties smoke particles, soluble dust particles sea respectively. And through analysis calculation results, concluded that, in bands, efficiency, absorb efficiency extinction same is all consistent with or similar laws.

When integrating an optical network into a chip, the communication characteristics and power cost of should be considered. In this letter, to fulfill data coherence communication, non-intention ring-based which supports multicast broadcast is studied. To further eliminate penalty due waveguide crossing, layout optimization methodology proposed. By dividing several sections placing them part-by-part different areas, total number cross points reduced by 83.3%, 71.7% 70.2% in networks...

A screwy torus topology (STorus) is proposed to improve the performance of network that memory access oriented. STorus divides an optical into two subnets, and employs waveguide hierarchy. Comparisons between mesh are made, connecting with 4 controllers.

This paper proposes a novel crosstalk analysis model applicable to closed ring-based optical network-on-chip. In order show how this is used, an example of analyzing noise and SNR in generic ONoC studied.

The structure of a power transformer through the combination oil and paper as main insulation system is key to its safe reliable operation. In this paper, grey correlation model constructed by Support Vector Machine (SVM) from perspective electric field change during discharge process, optimized using idea cross-validation find optimal parameters construct gap frequency breakdown voltage prediction model. SVM used predict 30 min withstand test, predicted compared with actual voltage....

A fast algorithm of calculating LRCS a complex target is presented and computational unified device architecture (CUDA) used for accelerating the color-flagged Graphical Electromagnetic Computing (GRECO) method. Based on five parameters bidirectional reflectance distribution function (BRDF) model, one target's can be divided into millions pixels' computation which are processed great many threads running in GPU. The obtained comparison CPU calculation CUDA parallel aircraft shows that speed...

Three-dimensional network-on-chip (3D NoC) applying Through-Silicon-Vias (TSVs) is the most promising process in achieving higher network bandwidth, lower latency and power consumption. Unfortunately, fabrication of TSV connection has not matured yet, which results poor vertical links yield thus 3D NoC decreases sharply with growth number TSVs. To ensure NoC, this paper we propose a hybrid interconnect scheme minimizes by sharing through routers.

Unexpected open-circuit (OC) faults are a significant problem in cascaded H-bridge (CHB) converters and can cause secondary failure of other components. Therefore, it is important to localize the OC fault quickly. This paper proposed an efficient localization method for CHB converter. Firstly, operation mechanisms analyzed under healthy faulty state converter, grid current DC capacitor voltage selected as parametric locate faults. Then, simulation model built validate feasibility using these...

An optical interconnect network SOIN is proposed for the on-chip parallel memory access with better scalability. The 8-rank shown and compared 4-rank in terms of bandwidth, latency power consumption.