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【24h】Isolated AC–DC Converter Using Medium Frequency Transformer for Off-Shore Wind Turbine DC Collection Grid

机译使用中频变压器的隔离式AC-DC转换器,用于离岸风力涡轮机DC收集电网

【摘要】This paper investigates a dc collection grid architecture to process energy from offshore wind turbine generators (WTGs), which can be further interfaced with the shore via a high-voltage dc network. In the proposed approach, WTG output voltage is rectified and converted to medium frequency (MF). Then, a transformer isolation stage is used, followed by a boost rectification stage. The boost rectification stage is controlled to emulate a resistive load, forming a medium voltage dc (MVDC) interconnection. This type of control is simple for varying wind conditions. The operating principles and unique advantages of the proposed approach are documented along with comparison with a conventional benchmark, assuming the turbines are fitted with direct drive technology. System design example, loss/size analysis and transformer finite element analysis are shown in this paper. Simulation results demonstrate the functional capability of the system. Experimental results from a scaled down prototype prove the operation of proposed concept.

【摘要机译】本文研究了一种直流收集电网架构,以处理来自海上风力涡轮发电机(WTG)的能量,可以通过高压直流网络将其进一步与海岸连接。在提出的方法中,WTG的输出电压经过整流并转换为中频(MF)。然后,使用变压器隔离级,然后是升压整流级。控制升压整流级以模拟电阻负载,从而形成中压直流(MVDC)互连。这种控制对于变化的风况很简单。假设涡轮机采用直接驱动技术,则记录了所建议方法的操作原理和独特优势,并与常规基准进行了比较。本文给出了系统设计实例,损耗/尺寸分析和变压器有限元分析。仿真结果证明了系统的功能。缩小原型的实验结果证明了所提出概念的有效性。

【作者】Harish Krishnamoorthy;Michael Daniel;Jorge Ramos-Ruiz;Prasad Enjeti;Liming Liu;Eddy Aeloiza;

【作者单位】Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA; Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA; Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA; Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA; ABB Corporate Research, Raleigh, NC, USA; ABB Corporate Research, Raleigh, NC, USA;

【年(卷),期】2017(64),11

【年度】2017

【页码】8939-8947

【总页数】9

【原文格式】PDF

【正文语种】eng

【中图分类】;

【关键词】Rectifiers;Frequency conversion;Topology;Capacitors;Inductors;Wind turbines;Generators;

机译 整流器;频率转换;拓扑结构;电容器;电感器;风力涡轮机;发电机;
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