Harmonics generated by the nonlinear loads and unbalancing of loads are serious concerns regarding the power quality of the distribution system. An Enhanced technique to scale down current harmonics, balance loads by MSALC (Modified Shunt Active Line Conditioner) using traditional PI and enhanced FoPID (Fractional order PID) control device is presented in the article. Performance of MSALC using traditional PI and enhanced FoPID is tested for various load conditions and dynamic load changing characteristics were performed. Using MATLAB/Sim software the outcomes are verified. Comparatively harmonic current reduction between traditional PI and enhanced FoPID was discussed. Enhanced FoPID control device-based MSALC found to have superior performance than the traditional PI-based MSALC.

非线性负载和负载不平衡所产生的谐波是配电系统电能质量的严重问题。本文介绍了一种增强的技术，可通过使用传统PI和增强型FoPID（分数阶PID）控制设备的MSALC（改进型并联有源线路调节器）来减小电流谐波，平衡负载。针对各种负载条件测试了使用传统PI和增强型FoPID的MSALC的性能，并执行了动态负载变化特性。使用MATLAB / Sim软件可以验证结果。讨论了传统PI和增强型FoPID之间相对谐波电流的降低。基于增强型FoPID控制设备的MSALC比传统的基于PI的MSALC具有更好的性能。