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工业用双馈发电机的无功功率控制方法
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作者 胡春林 谭振国 +2 位作者 曾佳佳 邓睿 李军 《电子设计工程》 2024年第15期86-89,94,共5页
将无功功率注入工业用双馈发电机时,易出现电压不对称的现象,导致电压及电流发生波动。为了解决上述问题,提出一种新的工业用双馈发电机无功功率控制方法。计算发电机机端正序电压矢量和负序电压矢量的幅值,求出正序无功功率和定子侧无... 将无功功率注入工业用双馈发电机时,易出现电压不对称的现象,导致电压及电流发生波动。为了解决上述问题,提出一种新的工业用双馈发电机无功功率控制方法。计算发电机机端正序电压矢量和负序电压矢量的幅值,求出正序无功功率和定子侧无功功率,根据计算结果进行无功功率分配。分析波动状态计算定子电流,并获取三相电压峰值两端极值的函数幅值关系,实现无功功率的控制。实验结果表明,研究的无功功率控制方法四次工作电流峰值均为4800 A,能够很好解决电压和电流波动问题。 展开更多
关键词 工业发电机 双馈发电机 无功功率 功率控制
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当代国外汽轮发电机工业特点及技术发展概况 被引量:2
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作者 戴庆忠 《发电设备》 2000年第5期39-42,共4页
简要介绍了国外汽轮发电机的发展现状。
关键词 汽轮发电机工业 特点 发展 冷却技术
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EtherCAT光纤通讯网络,用于连接高效灵活的风力发电机组——实时通讯使风电场应用实现快速响应
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《国内外机电一体化技术》 2015年第4期28-29,共2页
近日,欧洲风能协会发布了一些预测数据:欧洲风电将取得进一步的动态发展,到2020年,风电总装机容量将实现64%的增长。作为这一发展的组成部分,数十台总输出量为217兆瓦的风力发电机最近由法国阿尔斯通公司安装在了苏格兰风场中。极... 近日,欧洲风能协会发布了一些预测数据:欧洲风电将取得进一步的动态发展,到2020年,风电总装机容量将实现64%的增长。作为这一发展的组成部分,数十台总输出量为217兆瓦的风力发电机最近由法国阿尔斯通公司安装在了苏格兰风场中。极速EtherCAT通讯网络和Beckhoff相应的I/O组件构成这一欧洲最大陆上风电项目的通讯主干。 展开更多
关键词 通讯网络I/0 工业以太网EtherCAT风场风力发电机
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2010 Industrial Report on Small and Medium Size Wind Turbines in China 被引量:1
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作者 Li Defu 《Electricity》 2012年第1期45-47,共3页
The development of small and medium wind turbine industry in 2010 is presented, including the production capability, the mainstream products and the main producers. Suggestions for future's development are also pu... The development of small and medium wind turbine industry in 2010 is presented, including the production capability, the mainstream products and the main producers. Suggestions for future's development are also put forward. 展开更多
关键词 wind turbine equipment manufacturing production capability
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Problems of Planning for Power Industry in China
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作者 Wu Jingru Chen Jianbo Chu Xue(Translated) 《Electricity》 2006年第1期10-14,共5页
On the basis of summing up the development of electric power industry in the 10th Five-Year Plan period, the idea of electric power development planning from 2006 to 2020 is presented. The authors analyzed ten main pr... On the basis of summing up the development of electric power industry in the 10th Five-Year Plan period, the idea of electric power development planning from 2006 to 2020 is presented. The authors analyzed ten main problems that existed in electric development during the 10th Five-Year Plan period, forecasted the electricity generation from 2006 to 2020, put forward the development strategy of power industry, discussed the component and development program of hydropower, thermal power, nuclear power, natural gas power and renewable power, outlined the present situations of six regional power grids, power transmission from western to eastern regions, UHV AC/DC power transmission and nationwide power grid interconnections, and finally gave out seven suggestions about electric power development in the future. 展开更多
关键词 electric power industry development planning installed capacity electricity generation regional power grid
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Efficiency in Boiler Feed Pumps for Industrial Steam Generation
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作者 Guilherme Filippo Fi|ho 《Journal of Energy and Power Engineering》 2014年第6期1021-1029,共9页
This paper presents some opportunities to improve feedwater system efficiency for industrial boilers, usually consisting of multistage centrifugal pumps driven by three-phase induction motors. There is abundant litera... This paper presents some opportunities to improve feedwater system efficiency for industrial boilers, usually consisting of multistage centrifugal pumps driven by three-phase induction motors. There is abundant literature on the efficiency in steam boilers. However, few deal exclusively with feedwater systems. The total horsepower in boiler feed pumps and the corresponding energy consumption estimated for Brazilian industries are as follows: 110.5 MWE of motor driven power and a yearly electricity consumption of 442 GWh for a population of 7,800 steam boilers, approximately. It is estimated that there can be an efficiency improvement in feedwater systems for industrial boilers of 30% on average. To a large extent, these opportunities reside in older boilers that are very common in the Brazilian industrial sector. The most common causes for the low efficiency of feedwater systems are: the control loop of the feedwater, oversized boilers and excessive operational pressure set. Sometimes, the boiler feedwater system can present more than one problem simultaneously. Any kind of solution involves some speed regulation, new pump and number of pumps. Each problem generation facilities were selected in which common inefficiencies cases, the improvement in efficiency can get to 37%. form of intervention in boiler feed pumps, such as: impeller trim, may have more than one solution. Three distinct industrial steam are present. The suggested solutions were analyzed. In these three 展开更多
关键词 Industrial boiler boiler feed pump industrial energy efficiency.
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