International Journal for Scientific Research and Development最新文献_第6页

Kaizen & Its Applications - A Japanese Terminology Referred to Continuous Improvement 改善及其应用-日文持续改善的术语

International Journal for Scientific Research and Development Pub Date : 2015-05-01 DOI: 10.6084/M9.FIGSHARE.4487600.V1

R. P. Kale, L. Raut, Pravin Talmale

引用次数: 3

Improved Flux Estimation Technique for Direct Torque Control of Induction Motor Drives 感应电机直接转矩控制的改进磁链估计技术

International Journal for Scientific Research and Development Pub Date : 2015-05-01 DOI: 10.21090/ijaerd.0205195

Patel Tejaskumar Ishvarbhai, R. MankadPritesh, N. AbotiAshish

{"title":"Improved Flux Estimation Technique for Direct Torque Control of Induction Motor Drives","authors":"Patel Tejaskumar Ishvarbhai, R. MankadPritesh, N. AbotiAshish","doi":"10.21090/ijaerd.0205195","DOIUrl":"https://doi.org/10.21090/ijaerd.0205195","url":null,"abstract":"Induction motors are the starting point to design an electrical drive system which is widely used in ma ny industrial applications. In recently various speed control technique are used. But the direct torque control (DTC) scheme being one of the most recent steps in this direction. This scheme provides excellent properties of regulation without rotational speed feedback. In this control scheme the electromagnetic torque and stator flux magnitude are estimated with only stator voltages and currents and this estimation does not depend on motor parameters except for the stator resistance. Literature review has been done to study the recent improvements in DTC scheme especially in low speed range operation to improved flux estimation and reduce the torque ripple problem. The conventional direct torque controlled scheme used voltage model for flux estima tion but this model estimate inaccurate flux at lower speed. So due to inaccurate flux estimation DTC drive give poor performance by distortion of stator current and torque ripple. So here I have present another model for flux estimation which gives best DTC drive performance at lower speed. KeywordsIntroduction, Direct torque control, Stator flux estimation, Simulation Results","PeriodicalId":13846,"journal":{"name":"International Journal for Scientific Research and Development","volume":"16 1","pages":"268-272"},"PeriodicalIF":0.0,"publicationDate":"2015-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89627006","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: 0

A Review Paper on Cloud Computing 云计算综述论文

International Journal for Scientific Research and Development Pub Date : 2015-05-01 DOI: 10.21090/ijaerd.ncrretcs18

Er. Varun Sharma, Varun Sharma

引用次数: 84

A Review on Design and Analysis of Adhesive Bonded Joint by Finite Element Analysis 粘接接头设计与有限元分析综述

International Journal for Scientific Research and Development Pub Date : 2015-04-25 DOI: 10.14445/23488360/IJME-V2I4P104

Neha B. Thakare, A. Dhumne

引用次数: 7

A Review on Study and Analysis of Various Parameters Affecting Nugget Formation in Resistance Spot Welding Using FEM 影响电阻点焊熔核形成的各种参数的有限元研究与分析综述

International Journal for Scientific Research and Development Pub Date : 2015-02-01 DOI: 10.21090/ijaerd.0205160

Harshad Parmar, N. Patel

引用次数: 1

A Review on Design Analysis and Optimization of Parallel Motion Fender 平行运动挡泥板设计分析与优化研究进展

International Journal for Scientific Research and Development Pub Date : 2015-02-01 DOI: 10.21090/ijaerd.0205161

Mohitsinh S. Zala, Kunal J. Motwani

引用次数: 1

GPS RECEIVER IMPLEMENTATION USING SIMULINK 利用simulink实现GPS接收机

International Journal for Scientific Research and Development Pub Date : 2014-08-01 DOI: 10.21090/ijaerd.010568

N. Chowdary, C.Abhishek, N.Sasikiran

{"title":"GPS RECEIVER IMPLEMENTATION USING SIMULINK","authors":"N. Chowdary, C.Abhishek, N.Sasikiran","doi":"10.21090/ijaerd.010568","DOIUrl":"https://doi.org/10.21090/ijaerd.010568","url":null,"abstract":"The Global Positioning System (GPS) is a space- based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. GPS (Global Positioning System) is the one of the most pre-dominantly used in most parts of the world In the past, the implementation of a complete GPS receiver was divided into two parts. The first part is implemented on ASIC or FPGA. This part includes the acquisition and tracking phases, where the algorithms of the both are written by the HDL programming language. The second part is the navigation solution part that is implemented on DSP by writing its algorithm by C/C++, FORTRAN, or assembly. This means that we have to deal with three environments to implement a complete GPS receiver. The three environments are the Simulation, FPGA, and DSP environments. Moreover, using a text programming languages in writing such long and complicated algorithms makes the process difficult to debug, modify. Simulink was used in the implementation of such receiver; there by introducing a new look for the technology that can be implemented through a graphical user interface environment. This makes every part in the receiver architecture very clear and easier to understand, follow, modify and debug. This can be considered a step added on the route of an open source GPS receiver. Using the same environment in both the simulation and implementation stages makes the designer's mind dedicated most of the time in developing and enhancing the algorithm through rapid prototyping and experimentation and less time on the coding. In general, this article can be considered as introducing a new look for designing, simulating, and implementing the typical GPS receiver using a graphical programming language, which is SIMULINK.","PeriodicalId":13846,"journal":{"name":"International Journal for Scientific Research and Development","volume":"27 1","pages":"435-437"},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75338413","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: 1

MPPT CONTROL OF GRID CONNECTED PMSG WIND TURBINES 并网PMSG风力发电机组的MPPT控制

International Journal for Scientific Research and Development Pub Date : 2014-05-01 DOI: 10.21090/ijaerd.010317

M.M.Patel

引用次数: 1

Cadmium Telluride (CdTe) Compound and Silicon (Si) Semiconductor Materials Detectors for X-Ray 碲化镉(CdTe)化合物和硅(Si)半导体材料x射线探测器

International Journal for Scientific Research and Development Pub Date : 1900-01-01 DOI: 10.59992/ijsr.2023.v2n8p8

Hagag Gabasa, Assma Said, Karima Abdulla, Samah Aghtisa

{"title":"Cadmium Telluride (CdTe) Compound and Silicon (Si) Semiconductor Materials Detectors for X-Ray","authors":"Hagag Gabasa, Assma Said, Karima Abdulla, Samah Aghtisa","doi":"10.59992/ijsr.2023.v2n8p8","DOIUrl":"https://doi.org/10.59992/ijsr.2023.v2n8p8","url":null,"abstract":"There are different approaches and also materials to construct a detector for x-rays. the available semiconductor materials, Silicon (Si) is mainly used for charged particle detectors and soft X-ray detectors. Cadmium Telluride (CdTe) compound semiconductors for x-ray detectors have experienced a rather rapid development in the last few years, due to their appealing performance. In this paper we review the physical properties of semiconductor detectors for x-ray. In particular, we focus on compound semiconductor detectors. In addition, Si detector has better energy resolution achievement. However, it does not have good detection efficiency for higher energy above (40Kev). While CdTe detector supplies higher detection efficiency for x -rays about 100% for up to 100 keV in energy. The response functions of Si detector to reduce small x-ray, which has limited sensitivity for energy about 30keV. The XR-100T is high performance for x-ray and gamma ray detector by using 241Am (59.5keV), so the cooler are mounted the input FET a feedback components to the Amptek to charge sensitive preamplifier. Both the Si and CdTe detectors are connected to the PX2 combined amplifier and power supply, that was provide the voltage needed to operate XR-100T CdTe. The PX2 T CdTe amplifier has a Rise Time Discrimination circuit, measure the FWHM energy resolution of 55Fe (5.89) the peak in each spectrum hence a graph of energy resolution. Moreover, the Rise Time Discrimination So the escape peak of 55Fe was determined with Si detector was 11.66 keV, also k- sell x-ray energy was calculated to 5.77keV and the Rise Time Discrimination effect was studied on the spectrum when is it switched on and off. Its influence was found in decreasing the noise of the spectrum.","PeriodicalId":13846,"journal":{"name":"International Journal for Scientific Research and Development","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89474981","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: 0