上海大学学报(自然科学版) ›› 2011, Vol. 17 ›› Issue (1): 74-78.doi: 10.3969/j.issn.1007-2861.2011.

• 机电工程与自动化 • 上一篇    下一篇

多重电枢风电系统无电网电压传感器的并网逆变

汤燕燕,阮毅,杨勇   

  1. (上海大学 机电工程与自动化学院,上海 200072)
  • 收稿日期:2009-07-22 出版日期:2011-02-28 发布日期:2011-02-28
  • 通讯作者: 阮毅(1955~),男,教授,博士生导师,博士,研究方向为电力电子与电力传动. E-mail:yruan@mail.shu.edu.cn
  • 基金资助:

    台达电力电子科教发展基金重点资助项目(DRES2007002); 上海大学研究生创新基金资助项目(SHUCX092200)

Parallel Grid Connected Inverters for Multiple Armature Winding Wind Power System without Grid Voltage Sensors

TANG Yan-yan,RUAN Yi,YANG Yong   

  1. (School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China)
  • Received:2009-07-22 Online:2011-02-28 Published:2011-02-28

摘要:

以提高并网逆变器可靠性和降低成本为目的,采用基于虚拟电网磁链定向的无电网电压传感器的矢量控制策略;为了提高风电系统可靠性和容错能力,采用多重电枢直流侧电压并联运行的控制方案.详细分析单套逆变器数学模型和控制策略,实现两套逆变器并联运行并网.实验结果表明,三相并网逆变器输出电流正弦度良好,同时具有较好的动、静态特性,从而验证了方案的可行性和正确性.

关键词: 多重电枢;并联;无电网电压传感器;虚拟磁链

Abstract:

The control strategy based on virtual power grid flux without power grid voltage sensors is proposed to improve reliability and reduce cost for the gridconnected inverter. A novel control strategy makes the DC voltage flexibly run in parallel based on multiple armaturewinding, making the system more reliable and robust. Experimental results show that output currents are sinusoidal, with a good dynamic and static performance. Thus feasibility of the control strategy is verified.

Key words: multiple armature winding; parallel; sensors without grid voltage; virtual grid flux

中图分类号: