3C Tecnología_Glosas de innovación aplicadas a la pyme最新文献_第10页

Qualitative study of airflow structure across wooden louvred window panels for natural ventilation applications 自然通风用木制百叶窗板气流结构的定性研究

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2021-09-14 DOI: 10.17993/3ctecno/2021.v10n3e39.73-99

N. Rasli, N. Ramli, M. R. Ismail, N. Kamaruddin

引用次数: 1

Optimization of recloser methods on medium voltage distribution networks 中压配电网重合闸方法的优化

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2021-09-14 DOI: 10.17993/3ctecno/2021.v10n3e39.57-71

Renaldo Strydom, P. Hertzog

引用次数: 2

Non-linear modelling of Ferro casting ductile shear key of L-Shaped concrete blocks with epoxy joint using Midas FEA 采用Midas有限元法对l型环氧接缝混凝土浇铸韧性剪切键进行非线性建模

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2021-09-14 DOI: 10.17993/3ctecno/2021.v10n3e39.101-117

Putri Ardiyati, N. Handika, H. Purnomo

引用次数: 0

Estado del arte: métricas del desarrollo de software móvil 最先进的:移动软件开发指标

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2021-09-14 DOI: 10.17993/3ctecno/2021.v10n3e39.17-37

J. Carrión, R. F. M. Román, F. Castillo, Donnis Alberto Torres Apolinario

引用次数: 0

Estado del arte: metodologías de desarrollo de aplicaciones móviles 最先进的:移动应用程序开发方法

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2021-06-14 DOI: 10.17993/3CTECNO/2021.V10N2E38.17-45

Jimmy Rolando Molina Ríos, Joofre Antonio Honores Tapia, Nieves Pedreira-Souto, Henry Paúl Granda León

{"title":"Estado del arte: metodologías de desarrollo de aplicaciones móviles","authors":"Jimmy Rolando Molina Ríos, Joofre Antonio Honores Tapia, Nieves Pedreira-Souto, Henry Paúl Granda León","doi":"10.17993/3CTECNO/2021.V10N2E38.17-45","DOIUrl":"https://doi.org/10.17993/3CTECNO/2021.V10N2E38.17-45","url":null,"abstract":"Since the origin of cell phones, the development of mobile applications has grown exponentially, opening a new field of research in the field of software engineering. The need to produce an application with high quality indices has led to the study and formulation of new methodologies that cover all the corresponding aspects related to quality and production time. The objective of this research is to carry out an exhaustive study to extract relevant data from each framework through bibliographic and field research for the construction of a state of the art that verifies through an analysis the methodology indicated for the development of mobile applications. The result obtained from the analysis shows that, despite finding a certain similarity between the methodologies with agile principles, Scrum is characterized as the indicated methodology for the development of mobile applications. This fact gave rise to the emergence of new software development methodologies with approaches to the so-called agile practices whose objective is the production of quality software.","PeriodicalId":210685,"journal":{"name":"3C Tecnología_Glosas de innovación aplicadas a la pyme","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126600641","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: 2

Discontinuous conduction mode Buck converter with high efficiency 高效率的断续导通模式Buck变换器

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2021-05-07 DOI: 10.17993/3CTECNO.2021.SPECIALISSUE7.35-51

A. H. Memon, R. Ali, Z. Memon

{"title":"Discontinuous conduction mode Buck converter with high efficiency","authors":"A. H. Memon, R. Ali, Z. Memon","doi":"10.17993/3CTECNO.2021.SPECIALISSUE7.35-51","DOIUrl":"https://doi.org/10.17993/3CTECNO.2021.SPECIALISSUE7.35-51","url":null,"abstract":"Electronic devices require AC to DC converter (rectifier) to convert AC voltage from the grid to DC voltage for the electronics and its result is low power factor (PF) and harmonic current injection into the system. Nowadays, power factor correction (PFC) converters are being widely used which can achieve high power factor (PF) and reduce the harmonics caused during AC to DC conversion and buck PFC converter is one of mostly used converter. On the other hand, if this converter works with constant duty-cycle (CDC) control scheme, the overall losses are more and efficiency is less. In order to increase the efficiency of buck converter operating in discontinuous conduction mode (DCM), a variable duty-cycle (VDC) control scheme is proposed. The method of fitting VDC control scheme is given for making implementation of circuit simpler. The performance of buck converter is compared with CDC and VDC control scheme in terms of efficiency. For verifying the validity of proposed technique, the simulation results are carried out. The object of the research paper is to propose the control scheme to achieve high PF for DCM buck converter by only modulating the duty-cycle of buck switch.","PeriodicalId":210685,"journal":{"name":"3C Tecnología_Glosas de innovación aplicadas a la pyme","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114323369","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

Modified variable on-time control scheme to realize high power factor for AC/DC integrated Buck-Boost converter 改进变准时控制方案，实现交/直流集成Buck-Boost变换器的高功率因数

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2021-05-07 DOI: 10.17993/3CTECNO.2021.SPECIALISSUE7.67-81

A. H. Memon, N. Memon, Z. Memon

{"title":"Modified variable on-time control scheme to realize high power factor for AC/DC integrated Buck-Boost converter","authors":"A. H. Memon, N. Memon, Z. Memon","doi":"10.17993/3CTECNO.2021.SPECIALISSUE7.67-81","DOIUrl":"https://doi.org/10.17993/3CTECNO.2021.SPECIALISSUE7.67-81","url":null,"abstract":"In today’s modern era low power factor (PF) is major issue in the field of power electronics which has made our life, simpler, easier and comfortable. However, with this comfort and easiness this technology brings power quality issues because it is centered on solid-state devices. These issues introduce harmonic contained current or distorted current which has several drawbacks like high power loss, voltage distortion and EMI compatibility issues etc. The conventional boundary conduction mode (BCM) integrated buck-boost converter (BBC) operating with constant on-time control (COT) control scheme have low PF with high total harmonic distortion (THD) because of harmonic contained input current waveform. So, in order to make the input current waveform as a sinusoidal by changing the on-time of only buck switch, a modified variable-on-time (VOT) control scheme for Integrated BBC is proposed in this paper. The VOT control scheme can achieve high PF with low THD by utilizing the input and output voltage to modulate the on-time of only buck switch. The theoretical analysis is given, and the simulation results confirm the advantages of the proposed control scheme. The object of the research paper is to propose the control scheme to realize unity PF for CRM buck converter by only modulating the on-time of buck switch. The research methodology is based on: Input PF analysis of buck converter with traditional control scheme; Introduction of proposed control scheme; comparative analysis and simulation results to show the effectiveness of proposed control scheme.","PeriodicalId":210685,"journal":{"name":"3C Tecnología_Glosas de innovación aplicadas a la pyme","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121962853","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

CRM Buck converter with high input power factor 高输入功率因数的CRM Buck变换器

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2021-05-07 DOI: 10.17993/3CTECNO.2021.SPECIALISSUE7.149-161

A. H. Memon, Manzoor Ali, Z. Memon, A. Hashmani

{"title":"CRM Buck converter with high input power factor","authors":"A. H. Memon, Manzoor Ali, Z. Memon, A. Hashmani","doi":"10.17993/3CTECNO.2021.SPECIALISSUE7.149-161","DOIUrl":"https://doi.org/10.17993/3CTECNO.2021.SPECIALISSUE7.149-161","url":null,"abstract":"The buck converter is generally utilized in many applications because of various advantages like maintaining high efficiency for the wide range of input voltage, cost reduction, low output voltage, protection against inrush current and lifetime improvement. However, when on-time of buck converter is kept constant, the input voltage and current remains out of phase that cause’s low PF and high total harmonic distortion (THD). Therefore a power factor improvement technique is implemented in this paper that permits the average input current sinusoidal without need of extra converter to work in cascade with buck converter. The critical conduction mode (CRM) buck converter operating with constant on-time (COT) control scheme have low PF because of harmonic contained input current waveform. So in order to make the input current waveform as a sinusoidal by changing the on-time of buck switch, a variable-on-time (VOT) control scheme for CRM buck converter is proposed in this paper. The theoretical analysis is given, and the simulation results confirm the advantages of the proposed control scheme. The object of the research paper is to propose the control scheme to realize high PF for CRM buck converter by only modulating the on-time of buck switch and without need of extra converter to work with buck converter.","PeriodicalId":210685,"journal":{"name":"3C Tecnología_Glosas de innovación aplicadas a la pyme","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128748917","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

Pronóstico de siniestros viales en el Ecuador basado en descomposición de valores singulares multinivel - MSVD 基于多级奇异值分解的厄瓜多尔道路事故预测- MSVD

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2020-12-14 DOI: 10.17993/3ctecno/2020.v9n4e36.45-63

A. E. Congacha, Lady Espinoza, Lida Barba, C. Morales

引用次数: 0

IoT based efficient solar panel monitoring 基于物联网的高效太阳能电池板监控

3C Tecnología_Glosas de innovación aplicadas a la pyme Pub Date : 2020-12-14 DOI: 10.17993/3ctecno/2020.v9n4e36.87-93

Mirsad Hyder Shah, Nasser H. Abosaq

引用次数: 1