Performance analysis of LMS based control algorithm for power quality improvement in three phase grid connected system for linear/non-linear load
Performance analysis of LMS based control algorithm for power quality improvement in three phase grid connected system for linear/non-linear load
复制标题
基于 LMS 的线性/非线性负载三相并网系统电能质量改善控制算法性能分析
DOI：
10.11591/ijpeds.v10.i4.pp1944-1950
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发表时间：
2019
影响因子：
--
通讯作者：
S. Kirmani
中科院分区：
文献类型：
--
作者：
Mohmmad Ahmad;S. Kirmani
针对三相并网系统中固态设备引起的电能质量问题，提出了一种基于自适应滤波的配电网静止补偿器（DSTATCOM）的最小均方控制算法。这表明，在LMS自适应滤波器中的负载电流获得的有源分量的权重被用来产生参考电流，并随后产生的补偿器的VSC的开关脉冲。在Matlab/Simulink软件中对整个电路进行了沿着自适应技术和二极管桥式整流器型非线性负载的仿真。最初的电路模拟为三相线性电感负载。后来，它被模拟为一个整流器负载连接在PCC与断开的任何阶段的负载的一个短的持续时间。得出的结论是，谐波被发现的限制。以表格形式比较了两种类型负载的谐波和功率结果。因此，具有DSTATCOM的该三相系统改善了三相配电网络中的电能质量，因此用于提供谐波减少、负载平衡和调节公共耦合点（PCC）处的终端电压。
This paper presents the adaptive filtering based least mean square control algorithm for distribution static compensator (DSTATCOM) in three-phase grid tied system for linear/non-linear load, to solve the power quality problems caused by solid-state equipment and devices. This is shown that the active component weights obtained from the load currents in the LMS adaptive filter are used to produce the reference currents and subsequently produces the switching pulses for VSC of the compensator. The complete circuit along with the adaptive technique and diode bridge rectifier type nonlinear load is simulated in Matlab/Simulink software. Initially the circuit was simulated for a three phase linear inductive load. Later it was simulated for a rectifier load connected at PCC with a disconnection of the load of any phase for a short duration of time. It is concluded that the harmonics are found within the limit. The harmonics and power results for both types of loads are compared in a tabular form. Hence this three phase system with DSTATCOM improves the power quality in the three-phase distribution network therefore, serves to provide harmonics reduction, load balancing and regulating the terminal voltage at the point of common coupling (PCC).