期刊文献+
共找到5,571篇文章
< 1 2 250 >
每页显示 20 50 100
A Study on Financing Problems of Medium and Small-sized Technology-based Enterprises
1
作者 Hua Huang 《Proceedings of Business and Economic Studies》 2021年第1期22-27,共6页
Technology-based SMEs have the advantages of short construction period,fast decision-making mechanism,low management cost,high innovation efficiency,etc.However,financing difficulties have always been an important iss... Technology-based SMEs have the advantages of short construction period,fast decision-making mechanism,low management cost,high innovation efficiency,etc.However,financing difficulties have always been an important issue that plagues the development of high-tech SMEs.The problem of corporate financing will not only hinder the process of technological innovation,but also reduce the efficiency of achievement transformation.This article sorts out the typical financing problems of technology-based SMEs,and proposes suggestions from strengthening corporate system construction,broadening financing channels,enhancing market financing vitality,and improving support policy systems,in order to improve the financing of technology-based SMEs. 展开更多
关键词 technology-based smes Financing problems Financing countermeasures
在线阅读 下载PDF
The Nature and Use of Technology-Based Self-Regulated Learning Strategies Among EFL Students
2
作者 AN Zhujun 《Sino-US English Teaching》 2024年第11期506-514,共9页
This study explored the nature and use of technology-based self-regulated learning(SRL)strategies among the Chinese university students.A total of 20 undergraduate students in China's Mainland were invited to part... This study explored the nature and use of technology-based self-regulated learning(SRL)strategies among the Chinese university students.A total of 20 undergraduate students in China's Mainland were invited to participate in a focus group interview.The students reported using four types of technology-based SRL strategies including cognitive,meta-cognitive,social behavioral,and motivational regulation strategies.Among the strategies,technology-based vocabulary learning was reported to be a dominant strategy by the students.This study opens a new window to understanding how English as a foreign language(EFL)students utilize different strategies to learn English in technology-based learning context. 展开更多
关键词 self-regulated learning technology-based SRL strategies EFL students language learning
在线阅读 下载PDF
A Case Study of a Technology-Based Phonics Teaching and Learning in an Elementary School
3
作者 吴芳 《海外英语》 2020年第2期280-281,284,共3页
Different from International Phonetic Alphabet learning,phonics as an effective way of spelling and reading gets more at⁃tention in China.But it faces many problems in implementation process.This paper introduces a ca... Different from International Phonetic Alphabet learning,phonics as an effective way of spelling and reading gets more at⁃tention in China.But it faces many problems in implementation process.This paper introduces a case study of a technology-based phonics teaching and learning.This paper results from two classes in an elementary school revealed that pupils broke through the difficulties of learning phonics on technology-based learning. 展开更多
关键词 phonics teaching phonics learning technology-based phonetic learning
在线阅读 下载PDF
基于SME的地理数据库转换方法研究
4
作者 刘京 《河南科技》 2025年第14期32-36,共5页
【目的】为应对市县两级基础地理信息数据库在生产、管理和应用过程中因采用不同标准而导致的数据结构、要素分类及属性定义与省级数据库间存在的显著差异,提出了一种基础地理数据库智能转换关键技术和方法,以有效桥接市县与省级数据库... 【目的】为应对市县两级基础地理信息数据库在生产、管理和应用过程中因采用不同标准而导致的数据结构、要素分类及属性定义与省级数据库间存在的显著差异,提出了一种基础地理数据库智能转换关键技术和方法,以有效桥接市县与省级数据库。【方法】基于国产自主可控的南方数据整理加工引擎(SME)编写数据库智能转换解决方案,开发基于ArcGIS和CAD平台的辅助转换工具,并通过选取项目实例对该方法进行验证。【结果】结果表明,使用该方法后可提前20 d完成工期任务,且转换前后无要素遗漏、丢失等情况发生,转换结果准确可靠,满足相关规范要求。【结论】该转换方法具有一定的可行性与实践应用价值,可为后续研究提供一定的参考。 展开更多
关键词 sme 标准 地理数据库 转换方法
在线阅读 下载PDF
Cybersecurity Guide for SMEs: Protecting Small and Medium-Sized Enterprises in the Digital Era
5
作者 Anastasios Papathanasiou George Liontos +2 位作者 Athanasios Katsouras Vasiliki Liagkou Euripides Glavas 《Journal of Information Security》 2025年第1期1-43,共43页
Small and Medium-sized Enterprises (SMEs) are considered the backbone of global economy, but they often face cyberthreats which threaten their financial stability and operational continuity. This work aims to offer a ... Small and Medium-sized Enterprises (SMEs) are considered the backbone of global economy, but they often face cyberthreats which threaten their financial stability and operational continuity. This work aims to offer a proactive cybersecurity approach to safeguard SMEs against these threats. Furthermore, to mitigate these risks, we propose a comprehensive framework of practical and scalable cybersecurity measurements/protocols specifically for SMEs. These measures encompass a spectrum of solutions, from technological fortifications to employee training initiatives and regulatory compliance strategies, in an effort to cultivate resilience and awareness among SMEs. Additionally, we introduce a specially designed a Java-based questionnaire software tool in order to provide an initial framework for essential cybersecurity measures and evaluation for SMEs. This tool covers crucial topics such as social engineering and phishing attempts, implementing antimalware and ransomware defense mechanisms, secure data management and backup strategies and methods for preventing insider threats. By incorporating globally recognized frameworks and standards like ISO/IEC 27001 and NIST guidelines, this questionnaire offers a roadmap for establishing and enhancing cybersecurity measures. 展开更多
关键词 CYBERSECURITY CYBERCRIME smes (Small and Medium-Sized Enterprises) Risk Management Ransomware PHISHING Social Engineering MALWARE
在线阅读 下载PDF
SME测量系统在白车身生产的应用及运行稳定性提升
6
作者 陈晓宇 卢文超 +1 位作者 梅寅禅 赵洪生 《时代汽车》 2025年第6期143-146,共4页
本文详细探讨了SME测量系统在白车身生产中的应用,重点描述了其关键组件、校准流程及工作机制,突出了系统在测量精度和自动化方面的显著优势。面对运行中的挑战,文章提出了切实可行的解决方案,包括关联性分析、机器人轨迹优化等,这些策... 本文详细探讨了SME测量系统在白车身生产中的应用,重点描述了其关键组件、校准流程及工作机制,突出了系统在测量精度和自动化方面的显著优势。面对运行中的挑战,文章提出了切实可行的解决方案,包括关联性分析、机器人轨迹优化等,这些策略有效提升了系统的稳定性和一次下线合格率。文章还介绍了SME全自动测量系统的上线过程,展示了其在提高生产效率、降低返修成本以及确保产品质量方面的实际效益,证实了该系统在提升汽车制造工艺中的重要作用。 展开更多
关键词 sme测量系统 白车身生产 运行稳定性 性能优化 自动化测量
在线阅读 下载PDF
The Factors Affecting the Performance of Small and Medium Enterprises(SMEs)in Laos
7
作者 Oukham Sisounonth Vatthanamixay Chansomphou 《Chinese Business Review》 2025年第2期60-68,共9页
The study on the factors affecting the performance of small and medium enterprises(SMEs)in Lao PDR aims at firstly investigating the general characteristics of SMEs in Lao PDR,and secondly defining the factors affecti... The study on the factors affecting the performance of small and medium enterprises(SMEs)in Lao PDR aims at firstly investigating the general characteristics of SMEs in Lao PDR,and secondly defining the factors affecting business performance of small and medium enterprises in Lao PDR.The secondary data(2018)surveyed by World Bank enterprises were employed.The descriptive statistics were employed in order to see whether independent and dependent variables have impacts on SMEs’business performance.It was found that all small and medium enterprises were from family-based enterprises with no competition and no application of science and technology.It also revealed that the experiences of managers,services,duration of business implementation,number of laborers,number of trainings,export,access to finance,and innovation have significant relationship with SMEs’business performance.Whereas,it was found that gender of managers,size of SMEs,location,type of enterprises:manufacturing and retail,have no significant relationship with SMEs’business performance in Lao PDR. 展开更多
关键词 smeS PERFORMANCE multiple regression model Lao PDR
在线阅读 下载PDF
Fintech adoption for SMEs in different socioeconomic contexts:evidence from Hungary and Indonesia
8
作者 Adrian Szilard Nagy Fitty Valdi Arie +2 位作者 Octavia Diana Monica Tuegeh Beata Bittner Johan Reineer Tumiwa 《Financial Innovation》 2025年第1期3787-3823,共37页
The incorporation of financial technology(FinTech)into contemporary business development has emerged as a critical factor for small medium enterprises(SMEs),which contribute to their viability.In light of the signific... The incorporation of financial technology(FinTech)into contemporary business development has emerged as a critical factor for small medium enterprises(SMEs),which contribute to their viability.In light of the significant collaboration between Hungary and Indonesia,this research endeavors to delve into unexplored dimensions pertaining to the potential of fintech in bolstering the operational resilience of SMEs within the contexts of these developed and developing economies,using the technology-organization-environment(TOE)framework.Specifically,this study aims to investigate how the adoption of digital financial services can facilitate inclusive economic growth and foster entrepreneurial activities in both Hungary and Indonesia.The research adopts a quantitative methodology,employing statistical hypothesis testing and regression analysis to achieve its objectives.A sample of 349 participants,with 164 representing Hungary and 185 representing Indonesia,was purposively selected by scientific criteria to examine the patterns of FinTech adoption within the SME industry.The results show that when partial least squares–structural equation modeling(PLS-SEM)is used to examine the direct effect of TOE on fintech adoption,technological factors and environmental factors have a significant effect on fintech adoption,whereas organizational factors have no significant effect on fintech adoption.Further results from the PLS-MGA method used to investigate group differences show that Hungary–Indonesia significantly differ in terms of the impact of technological factors on fintech adoption;in the organizational context of fintech adoption,Indonesia has a stronger relationship than Hungary does,and in terms of environmental factors,Indonesia has a stronger relationship because,compared with Hungary,Indonesia has a higher level of trust in the government.The findings of this research are highly important,serving as a noteworthy reference point for assessing the collaborative efforts between the two countries in enhancing SMEs through the adoption of fintech. 展开更多
关键词 FinTech smeS Business development TOE framework Operational resilience Comparative study
在线阅读 下载PDF
A Study on the Impact of Data Assetization on Supply Chain Resilience of SRDI SMEs and the Mechanism of Its Role
9
作者 Ruohan Kan Sijia Wang 《Proceedings of Business and Economic Studies》 2025年第2期104-113,共10页
This paper selects the data of China's specialized,special and new“small giants”listed companies from 2011 to 2021,and starts from the key production factor and strategic asset of data assets,empirically examine... This paper selects the data of China's specialized,special and new“small giants”listed companies from 2011 to 2021,and starts from the key production factor and strategic asset of data assets,empirically examines the impact of data assetization on the supply chain resilience of SRDI SMEs,and examines the impact of data assetization on the supply chain resilience of SRDI SMEs using the role of the mechanism model.Through the mechanism model,the mediating effects of financing constraints and technological innovation are examined,and a path of action is drawn,which provides theoretical evidence and policy recommendations for promoting the digital transformation of SRDI SMEs and improving supply chain resilience. 展开更多
关键词 Data assetization Supply chain resilience Financing constraints Technological innovation SRDI smes
在线阅读 下载PDF
Rising IPR Protection in China Signals Safer Market for European SMEs
10
作者 DENG DI 《China Today》 2025年第5期58-60,共3页
China’s enhanced intellectual property rights(IPR)protection framework presents a promising prospect for European SMEs to pursue strategic growth and market expansion within the country’s innovation-driven economy.
关键词 market expansion intellectual property European smes innovation driven economy IPR protection
在线阅读 下载PDF
Research on Project Quality Management Mechanism of IT SMEs
11
作者 Rixin Luo Xiaoyang Wang 《Journal of Architectural Research and Development》 2025年第3期8-14,共7页
IT SMEs as an important force can promote scientific and technological innovation and economic development,the effectiveness of project quality management mechanism is directly related to the survival and development ... IT SMEs as an important force can promote scientific and technological innovation and economic development,the effectiveness of project quality management mechanism is directly related to the survival and development of IT SMEs.This paper take IT SMEs as the research object,which deeply discusses the situation,existing problems and improvement strategies of the project quality management mechanism,and combines agile management and total quality management(TQM)theories to build a dynamic and adaptive project quality management mechanism.Through deeply analysis,the effectiveness of the mechanism is proposed,and the optimization path is proposed,aiming at providing theoretical support and practical guidance for enterprises to improve project delivery quality and enhance market competitiveness. 展开更多
关键词 IT smes Project quality management Mechanism study Agile management TQM theories
在线阅读 下载PDF
Empirical Research on Supply Chain Finance Innovation Promoting Environmental Governance and Ecological Protection of SMEs
12
作者 Song He 《Journal of Environmental & Earth Sciences》 2025年第5期289-303,共15页
This research examines the relationship between supply chain finance innovation and environmental governance effectiveness among SMEs,with technological capability as mediator and institutional support as moderator.Un... This research examines the relationship between supply chain finance innovation and environmental governance effectiveness among SMEs,with technological capability as mediator and institutional support as moderator.Unlike previous isolated analyses,this study develops an integrated framework capturing the interplay between financial mechanisms and environmental outcomes.The innovative analytical approach incorporates“hard”and“soft”indicators,blockchain-based environmental performance management,and regulatory-financial integration.Hierarchical regression analysis of data from 1,682 manufacturing SMEs(2019–2023)reveals that supply chain finance innovation significantly improves environmental governance effectiveness(β=0.412,p<0.01),with 32.9%mediated through technological capability.Institutional support demonstrates substantial moderating effects(β=0.228,p<0.01),emphasizing the combined influence of finance innovation and technological capability on environmental outcomes.Cross-sectional analysis shows these effects are stronger among larger firms,private enterprises,and in developed regions.The findings enhance understanding of how financial innovation interacts with environmental sustainability through technological capability while highlighting institutional support’s importance.This research contributes to policy formulation and practice by demonstrating how innovative financial mechanisms can encourage improved environmental governance among SMEs. 展开更多
关键词 Supply Chain Finance Innovation Environmental Governance Technological Capability Institutional Support sme Green Finance
在线阅读 下载PDF
The Mediating Role of Technological Innovation Awareness on the Impact of SMEs’ Resources on Their Sustainable Growth in Lao PDR
13
作者 Souksavanh Nouanpaseuth Pakaiphone Syphoxay 《Economics World》 2025年第1期52-72,共21页
This paper aims to investigate the effect of SME’s resources including,financial resources(FRR),financial literacy(FLR),managerial capacities(MCR)and market orientation(MKR)on SME’s sustainable growth(SG)in both fin... This paper aims to investigate the effect of SME’s resources including,financial resources(FRR),financial literacy(FLR),managerial capacities(MCR)and market orientation(MKR)on SME’s sustainable growth(SG)in both financial SG(FSGE)and non-financial SG(NFSGE)terms;and to identify the technological innovation awareness(TIR)mediates the effect of these resources on SGSMEs.Data were collected from 517 SMEs,using survey method and adopted a random sampling technique.Structure Equation Model(SEM)and the Baron,and Kenny(1986)mediation approach,Amos was applied to test hypotheses.The findings revealed the resources contributed 41.9 percent and 32.9 percent of the variance in FSGE and NFSGE,respectively,and confirmed the mediating role of TIR in the relationship between resources and SG.Notably,FRR had an indirect effect on FSGE through TIR,although TIR partially mediated the relationship between FRR and NFSGE,and between FLR and SG,both in FSGE and NFSGE terms.While,TIR fully mediated the relationship between MKR and SG,both in FSGE and NFSGE terms as well.This evidence informs the importance of business resources and competencies.In particular,TIR plays an important role in business operations to enhance and maintain sustainable growth. 展开更多
关键词 technological innovation awareness financial resources financial literacy managerial capacities market orientation sustainable growth smeS
在线阅读 下载PDF
企业家社会资本对小微企业信贷约束的影响研究——基于信贷气馁视角
14
作者 唐莹 许志勇 +1 位作者 汪璐 邓超 《南开管理评论》 北大核心 2026年第1期39-50,共12页
基于2015年中国小微企业调查(CMES)数据,从信贷气馁视角实证检验企业家社会资本对小微企业信贷约束的影响。研究发现:第一,我国小微企业存在显著的隐性信贷约束,即在申请银行信贷融资时遭遇信贷气馁。第二,企业家社会资本有助于缓解小... 基于2015年中国小微企业调查(CMES)数据,从信贷气馁视角实证检验企业家社会资本对小微企业信贷约束的影响。研究发现:第一,我国小微企业存在显著的隐性信贷约束,即在申请银行信贷融资时遭遇信贷气馁。第二,企业家社会资本有助于缓解小微企业的隐性信贷约束,主要通过提升企业家的金融信息获取能力、构建更强的心理资本两条路径实现。第三,在市场化程度低、社会信任水平低的地区,以及对于非高新技术企业、银企关系更为紧密的小微企业,企业家社会资本对信贷气馁的缓解效应更为显著。反事实分析发现,我国信贷市场上的小微企业信贷气馁并非有效的自我配给机制。本文深刻揭示了企业家社会资本这一非正式制度对缓解小微企业融资难的作用,为促进小微企业高质量发展提供理论支撑和政策指引。 展开更多
关键词 小微企业 信贷气馁 企业家社会资本 自我配给
在线阅读 下载PDF
数字技术应用对中小企业成长的赋能机制——专精特新战略导向的中介效应
15
作者 邬爱其 吴轶珂 《科学学研究》 北大核心 2026年第2期410-420,共11页
在数字经济时代,走专精特新发展道路是我国中小企业高质量成长的重要战略路径。本研究基于企业内生成长理论,探索数字技术应用赋能中小企业成长的内在机制和边界条件。实证分析发现,数字技术应用能够促进中小企业成长,该促进作用通过增... 在数字经济时代,走专精特新发展道路是我国中小企业高质量成长的重要战略路径。本研究基于企业内生成长理论,探索数字技术应用赋能中小企业成长的内在机制和边界条件。实证分析发现,数字技术应用能够促进中小企业成长,该促进作用通过增强中小企业专精特新战略导向实现;数字技术应用对中小企业专精特新战略导向的影响程度,会受到外部市场环境和企业生态资源获取能力的影响,即当市场竞争越激烈或生态资源获取越容易时,数字技术应用对中小企业专精特新战略导向的促进作用越弱。研究结论丰富了数字经济时代企业内生成长理论,有助于指导中小企业开展数字化建设和实现持续健康成长。 展开更多
关键词 数字技术应用 中小企业成长 专精特新战略导向 市场竞争程度 生态资源获取
原文传递
治理拖欠中小企业账款:理论探讨、国际经验与中国之治
16
作者 李先军 马昊晗 《山西师大学报(社会科学版)》 2026年第2期32-41,共10页
破解拖欠中小企业账款问题,是缓解中小企业融资约束、支持大中小企业创新发展与激发市场活力涌现的必然之举。供应链融资、锁定中小企业、高管理成本是大企业拖欠账款的主要原因,而竞争劣势和高维权成本则使之成为中小企业的被动选择。... 破解拖欠中小企业账款问题,是缓解中小企业融资约束、支持大中小企业创新发展与激发市场活力涌现的必然之举。供应链融资、锁定中小企业、高管理成本是大企业拖欠账款的主要原因,而竞争劣势和高维权成本则使之成为中小企业的被动选择。长期来看须提升中小企业的竞争优势,短期内须注重政府等主体的“市场增进”功能发挥,并应用和普及自动化支付工具。美日韩等通过反垄断、加速政府支付、出台专项法律、发起快速支付倡议、实施严格的惩罚机制等方式有效地缓解了拖欠中小企业账款问题,为我国提供了有益参考。建议加快修法立法,将《保障中小企业款项支付条例》上升为专门法;优化顶层设计,将治理中小企业欠款问题纳入国务院反垄断委员会工作内容中;完善工作机制,探索建立政府采购支付监测平台,推广标准化合同,创新款项支付方式,以倡议形式鼓励大企业加速付款等。政策导向上,短期应加大重点领域的账款清欠,长期应破除大企业垄断力量和提升中小企业能力。 展开更多
关键词 拖欠账款 中小企业 国际经验 中国方案
在线阅读 下载PDF
平台经济对“专精特新”中小企业技术创新的影响研究——基于ZINB模型的实证检验
17
作者 孙树垒 邢博 朱忆 《工业技术经济》 北大核心 2026年第1期23-32,共10页
本文基于企业资源基础观与数字创新理论,运用2013~2024年中国31个省(区、市)的面板数据,构建零膨胀负二项回归模型,系统考察平台经济对“专精特新”中小企业技术创新的影响机制。研究发现:平台经济通过资源整合、需求响应和知识溢出显... 本文基于企业资源基础观与数字创新理论,运用2013~2024年中国31个省(区、市)的面板数据,构建零膨胀负二项回归模型,系统考察平台经济对“专精特新”中小企业技术创新的影响机制。研究发现:平台经济通过资源整合、需求响应和知识溢出显著促进企业技术创新,其赋能效应呈现区域异质性,西部地区表现为创新水平提升,东部地区侧重激发创新参与意愿,东北地区则存在抑制作用;技术市场发展虽能促进技术要素流通,但对外部技术依赖会形成创新抑制效应;收入水平提升通过需求升级机制对创新意愿具有正向传导作用;平台经济不同维度呈现差异化影响,基础设施投入与产出水平通过降低创新门槛和倒逼技术迭代驱动创新,运营规模扩张则可能抑制创新效能。建议实施区域差异化赋能策略、完善技术市场规制体系、优化收入分配调节机制及强化平台经济维度调控,为数字经济背景下中小企业技术创新生态优化提供理论支撑。 展开更多
关键词 平台经济 数字经济 “专精特新”中小企业 技术创新 资源基础观 数字创新理论 技术市场 收入水平
在线阅读 下载PDF
含风电-SMES的电力系统暂态稳定概率评估 被引量:9
18
作者 方家琨 苗璐 +1 位作者 文劲宇 罗卫华 《电力系统保护与控制》 EI CSCD 北大核心 2013年第1期176-182,共7页
大规模风电并网给电力系统的稳定运行带来了新的挑战,储能是应对这一挑战的技术之一。以超导磁储能(SMES)为例,提出了含风电-SMES储能的电力系统暂态稳定概率评估方法。首先搭建了一个含有风电和储能的仿真测试平台,其中:风电场采用双... 大规模风电并网给电力系统的稳定运行带来了新的挑战,储能是应对这一挑战的技术之一。以超导磁储能(SMES)为例,提出了含风电-SMES储能的电力系统暂态稳定概率评估方法。首先搭建了一个含有风电和储能的仿真测试平台,其中:风电场采用双馈型风力发电机等值模拟,储能的模型采用SMES的三阶模型。在此基础上,研究了含风电和SMES的电力系统暂态稳定概率评估的方法,重点考虑了故障扰动和风速波动等随机因素,故障扰动包括故障位置、故障类型、故障持续时间以及重合闸成功与否等。基于二分法和蒙特卡罗仿真,量化了系统失稳的风险,建立了风电场的渗透率、储能容量和系统稳定性之间的定量关系。最后,结合SMES的技术经济性分析,给出了最优储能容量计算方法。 展开更多
关键词 风电场 smeS 暂态稳定 蒙特卡洛仿真
在线阅读 下载PDF
专精特新“小巨人”企业绿色创新绩效的提升路径研究——基于TOE框架的定性比较分析
19
作者 王友发 章永卿 艾璟 《科技与经济》 2026年第1期76-80,共5页
专精特新“小巨人”企业绿色创新绩效提升的路径对我国绿色发展至关重要。基于TOE框架,结合NCA与fsQCA方法,以专精特新“小巨人”企业为样本,探讨了专精特新“小巨人”企业绿色创新绩效的影响因素与提升组态路径。研究发现,专精特新“... 专精特新“小巨人”企业绿色创新绩效提升的路径对我国绿色发展至关重要。基于TOE框架,结合NCA与fsQCA方法,以专精特新“小巨人”企业为样本,探讨了专精特新“小巨人”企业绿色创新绩效的影响因素与提升组态路径。研究发现,专精特新“小巨人”企业绿色创新绩效的影响因素包括数字化转型、政府补贴、融资约束、组织冗余和环境规制,上述因素均无法独立构成提升专精特新“小巨人”企业绿色创新绩效路径的必要条件;组织冗余因素在提升专精特新“小巨人”企业的绿色创新绩效中具有普适作用;专精特新“小巨人”企业绿色创新绩效的驱动路径有3条,即数字推动型、压力响应型和资源盈余型。研究结论丰富了专精特新“小巨人”企业在绿色创新领域的理论,还为专精特新“小巨人”企业开展绿色创新实践提供新方向与启示。 展开更多
关键词 专精特新“小巨人”企业 绿色创新绩效 TOE框架
在线阅读 下载PDF
用于SMES的电压型换流器试验研究 被引量:3
20
作者 黄晓华 李学斌 +2 位作者 张志丰 赵彩宏 肖立业 《继电器》 CSCD 北大核心 2008年第3期51-55,共5页
为实现超导储能装置(SMES-Superconducting Magnetic Energy Storage)与输配电网之间的协调作用,达到提高电网输送容量、暂态稳定性和电压稳定性,提高配电网电能质量的目的。根据SMES的结构特点,结合目前大功率电力电子器件以及电路拓... 为实现超导储能装置(SMES-Superconducting Magnetic Energy Storage)与输配电网之间的协调作用,达到提高电网输送容量、暂态稳定性和电压稳定性,提高配电网电能质量的目的。根据SMES的结构特点,结合目前大功率电力电子器件以及电路拓扑的发展趋势,设计了一台三单相H桥分立控制的电压型换流器(VSI-Voltage source inverter)及其控制系统平台。该电压型换流器采用三相器件独立运行结构,控制系统采用数字信号处理器(DSP-Digital Signal Processing)设计,在功能上实现了对串联于电力线路的注入电压幅值和相位的灵活控制,最后给出了一台20 kW电压型换流器原理样机对母线电压补偿功能的试验结果,试验结果表明,该电压型换流器可以满足超导储能系统的需要。 展开更多
关键词 smeS 电压型换流器 电压补偿 双极性控制
在线阅读 下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部