• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE transactions on industrial informatics >Systematic Design of the Lead-Lag Network Method for Active Damping in LCL-Filter Based Three Phase Converters
【24h】

Systematic Design of the Lead-Lag Network Method for Active Damping in LCL-Filter Based Three Phase Converters

机译：基于LCL滤波器的三相变换器中主动阻尼的超前滞后网络方法的系统设计

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Three-phase active rectifiers guarantee sinusoidal input currents and unity power factor at the price of a high switching frequency ripple. To adopt an LCL-filter, instead of an $L$-filter, allows using reduced values for the inductances and so preserving dynamics. However, stability problems can arise in the current control loop if the present resonance is not properly damped. Passive damping simply adds resistors in series with the LCL-filter capacitors. This simplicity is at the expense of increased losses and encumbrances. Active damping modifies the control algorithm to attain stability without using dissipative elements but, sometimes, needing additional sensors. This solution has been addressed in many publications. The lead-lag network method is one of the first reported procedures and continues being in use. However, neither there is a direct tuning procedure (without trial and error) nor its rationale has been explained. Thus, in this paper a straightforward procedure is developed to tune the lead-lag network with the help of software tools. The rationale of this procedure, based on the capacitor current feedback, is elucidated. Stability is studied by means of the root locus analysis in $z$-plane. Selecting the lead-lag network for the maximum damping in the closed-loop poles uses a simple optimization algorithm. The robustness against the grid inductance variation is also analyzed. Simulations and experiments confirm the validity of the proposed design flow.
机译：三相有源整流器以高开关频率纹波为代价，保证了正弦输入电流和单位功率因数。采用LCL滤波器而不是$ L $滤波器，可以减小电感值，从而保持动态特性。但是，如果当前的共振没有得到适当的阻尼，则在电流控制回路中可能会出现稳定性问题。被动阻尼仅需在LCL滤波电容器上串联一个电阻即可。这种简单性是以增加损失和负担为代价的。主动阻尼修改了控制算法，以在不使用耗散元素的情况下获得稳定性，但有时需要额外的传感器。许多出版物已经讨论了该解决方案。超前-滞后网络方法是最早报告的方法之一，并且一直在使用。但是，既没有直接的调整过程（没有反复试验），也没有解释其理由。因此，在本文中，开发了一种简单的方法来借助软件工具来调整超前滞后网络。阐明了基于电容器电流反馈的该程序的原理。通过在$ z $平面中的根轨迹分析来研究稳定性。选择闭环极点中最大阻尼的超前滞后网络使用一种简单的优化算法。还分析了针对电网电感变化的鲁棒性。仿真和实验证实了所提出设计流程的有效性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号