摘要
补偿电流的检测是三相有源电力滤波器的关键问题,快速准确地检测出补偿电流并实施有效的控制直接影响到有源电力滤波器的补偿效果。对三相三线制有源电力滤波器进行电路模型分析,采用T-S模糊反馈控制的方法,获得三相三线制有源电力滤波器的补偿电流,并对电源电流进行实时的模糊反馈控制。采用并行分布补偿的方法设计了模糊反馈控制器,将有源电力滤波器的非线性问题线性化,在稳定性条件下求解线性矩阵不等式,得到无功功率及谐波电流全补偿控制策略的状态反馈增益,由此获得连续的即时补偿跟踪电流,仿真及实验结果验证了补偿电流检测的准确性及模糊反馈控制的有效性,对简化有源滤波器的电流检测与其构成组件具有较大应用价值。
The compensated current examination is the main problem of active power filter.The problems to examine correctly and rapidly then control efficiently are discussed.Based on the circuit model analysis of three-phase-three-line active power filter,the T-S fuzzy logic model is established with feedback control to achieve the compensated currents.Under condition of the stability of the proposed T-S fuzzy control model,the parallel distributed compensation is employed to design the fuzzy controller.The stable feedback gain is solved by linear matrix inequality.Computer simulations and experimentations indicate the correctness of compensated currents examination and validity performance of fuzzy feedback control with reactive power and harmonic compensation by this feedback controller,which has applications to simplifying the currents examination and components of active power filters.
出处
《控制工程》
CSCD
北大核心
2010年第6期759-763,768,共6页
Control Engineering of China
基金
国家自然科学基金资助项目(60804013)
关键词
有源电力滤波器
T-S模糊控制
反馈控制
补偿电流
线性矩阵不等式
并行分布补偿
active power filter
T-S fuzzy control
feedback control
compensated currents
linear catrix lnequality
parallel distributed compensation
