2008 IEEE Conference on Innovative Technologies in Intelligent Systems and Industrial Applications最新文献

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Ride through capabilities of load during voltage sag/swell and power interruption with zigzag transformer 锯齿形变压器在电压下降/膨胀和电力中断时负载的穿越能力

2008 IEEE Conference on Innovative Technologies in Intelligent Systems and Industrial Applications Pub Date : 2008-07-12 DOI: 10.1109/CITISIA.2008.4607346

S. A. Hafidz, K. Basu

{"title":"Ride through capabilities of load during voltage sag/swell and power interruption with zigzag transformer","authors":"S. A. Hafidz, K. Basu","doi":"10.1109/CITISIA.2008.4607346","DOIUrl":"https://doi.org/10.1109/CITISIA.2008.4607346","url":null,"abstract":"Single-phase voltage sag or swell of a 3-phase system due to one phase to ground fault, capacitor switching or any other reason is to be mitigated immediately for satisfactory operation of all the equipments. A 3-phase zigzag-winding transformer connected across a 3-phase load may mitigate the voltage sag or swell at any one phase of the load. The phase subjected to voltage sag or swell is disconnected from the source first, while the two healthy phases remain connected to the source. The zigzag transformer immediately rebuilds the voltage across the load of the open phase and allows the current to flow to the open phase load. Very low value of zero sequence impedance of the zigzag transformer produces very small voltage drop and the open phase voltage nearly equals the normal voltage. Very short interruption of supply takes place in the affected phase during the transfer of supply to the healthy phases. Proper value of capacitor, connected across the DC load, or the DC link capacitor in a converter system for AC load provides the ride through capability of the highly sensitive load during the period of voltage sag/swell or 1-phase power interruption.","PeriodicalId":194815,"journal":{"name":"2008 IEEE Conference on Innovative Technologies in Intelligent Systems and Industrial Applications","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129283837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

An investigation on control strategies for fast transient response of SMPS SMPS快速瞬态响应控制策略研究

2008 IEEE Conference on Innovative Technologies in Intelligent Systems and Industrial Applications Pub Date : 2008-07-12 DOI: 10.1109/CITISIA.2008.4607344

J. Jegandren, R. Gobbi, H. Athab

引用次数: 3

Implementation of several rendering and volume rotation methods for volume rendering of 3D medical dataset 三维医学数据集体绘制的几种绘制和体旋转方法的实现

2008 IEEE Conference on Innovative Technologies in Intelligent Systems and Industrial Applications Pub Date : 2008-07-12 DOI: 10.1109/CITISIA.2008.4607334

Thean Wui Ooi, H. Ibrahim, K. Toh

{"title":"Implementation of several rendering and volume rotation methods for volume rendering of 3D medical dataset","authors":"Thean Wui Ooi, H. Ibrahim, K. Toh","doi":"10.1109/CITISIA.2008.4607334","DOIUrl":"https://doi.org/10.1109/CITISIA.2008.4607334","url":null,"abstract":"In common CT or MRI scanning, volumetric data are acquired as a series of separated slices. Normal practice requires radiologists to interpret the three-dimensional (3D) object or volumetric data by studying these individual slices. Nevertheless, this process is burdensome and time-consuming. With the help from rendering techniques, these indirectly will ease the decision-making process and improve the effectiveness and efficiency of treatment planning. In general, surface rendering and volume rendering are among techniques widely used in medical applications. Among these, volume rendering is the most common visualization technique used to render both geometric and densitometric of data under investigation. This project implements three types of visualization methods based on volume rendering technique which are maximum intensity projection (MIP), local maximum intensity projection (LMIP) and ray-casting to investigate their limitations and significances. Different methods can be used to depict different features of the object in the data. The uses of methods are dependent on user demand and specified application. In order to assist radiologists to understand better on the nature of the 3D object and increase efficiency on detecting locations of abnormalities in the structure of the object, this project is also implementing volume rotation methods, which are Euclidean transformation and shear transformation to rotate the volumetric data in three-dimension space based on user-defined viewing angles. With the incorporation of volume rotation and rendering methods, these might help radiologists to depict different features of the object in any viewing angles.","PeriodicalId":194815,"journal":{"name":"2008 IEEE Conference on Innovative Technologies in Intelligent Systems and Industrial Applications","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121126907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

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