| 引用本文: | 李琼林,刘会金,孙建军,陈宇.基于模糊逻辑的参数自整定PI控制在有源滤波器中的应用[J].电力自动化设备,2005,(10):17-21 |
| .Fuzzy-PI control used in APF[J].Electric Power Automation Equipment,2005,(10):17-21 |
|
|
| 摘要: |
| 有源滤波器（APF）中误差信号的特性和PI控制时变性差限制了常规PI控制在APF中的应用．模糊逻辑控制具有理想的动态特性．对过程参数的变化不敏感的优点。对常规PI控制进行了改进．将误差信号各个频率下的正弦分量表示成相量形式．把传统PI控制中对每个采样点积分变为对相量进行叠加．构成了基于相量叠加的PI控制策略。并在此基础上将模糊逻辑控制与改进的PI控制相结合．用模糊控制策略控制比例、积分参数，实现了PI控制参数的自整定。设计了一种基于相量叠加的Fuzzy—PI控制器并将其应用于APF中．仿真实验验证了该方法的可行性。 |
| 关键词: 有源滤波器 模糊逻辑 PI控制 参数自整定 |
| DOI： |
| 分类号:TM761 |
| 基金项目: |
|
| Fuzzy-PI control used in APF |
|
LI Qiong-lin LIU Hui-jin SUN Jian-jun CHEN Yu
|
| Abstract: |
| The error signal characteristics of APF(Active Power Filter) and the objectsensitive trait of PI control limit the application of conventional PI control in APF. The fuzzy logical control has ideal dynamic characteristics,which is insensitive to process parameter change. The conventional PI control is improved in following way. Different frequency sine components of error signal are represented by phasors and the integration of each sample point in conventional PI control is replaced by phasor splicing to construct PI control strategy,combined with which,fuzzylogical control is applied to autoregulate the proportional and integral parameters. A controller of FuzzyPI is designed and applied in APF. Simulations verify its feasibility. |
| Key words: APF fuzzy-logic PI control parameter auto-regulation |
