发明授权
US5526252A Utility current feedback filter with pulse-width modulated power converter 失效
具有脉冲宽度调制功率转换器的电流反馈滤波器

  • 专利标题: Utility current feedback filter with pulse-width modulated power converter
  • 专利标题(中): 具有脉冲宽度调制功率转换器的电流反馈滤波器
  • 申请号: US212511
    申请日: 1994-03-11
  • 公开(公告)号: US5526252A
    公开(公告)日: 1996-06-11
  • 发明人: William L. Erdman
  • 申请人: William L. Erdman
  • 申请人地址: CA Livermore
  • 专利权人: Kenetech Windpower, Inc.
  • 当前专利权人: Kenetech Windpower, Inc.
  • 当前专利权人地址: CA Livermore
  • 主分类号: H02J3/06
  • IPC分类号: H02J3/06 H02M7/5395
Utility current feedback filter with pulse-width modulated power
converter
摘要:
A utility feedback filter for a self-commutated, pulse-width modulated power electronic converter. A feedback node is coupled to detect the utility current which is then utilized in a feedback loop through a feedback circuit. The feedback processed utility current is summed with the requested utility current, and the difference is used to generate a pulse-width modulation pattern. The damping factor can be adjusted by the feedback circuit, which preferably has a transfer function of K.sub.f +K.sub.d, where K.sub.f is a proportional feedback gain and K.sub.d is a derivative feedback gain. Utilization of the actual utility current provides precise control of the current supplied to the utility, which substantially reduces or even eliminates the high frequency harmonic components. Furthermore, by proper choice of the components in the feedback circuit, the resistive value of a damping resistor can be decreased, thereby reducing wasteful dissipation of power.
公开/授权文献
信息查询
0/0