The extensive implementation of smart utilities in household and business applications have enhanced the embedding of nonlinear electronic components in the majority of devices. The nonlinear load current–voltage (i–v) behaviour lead to the insertion of unproductive higher-order harmonics in the supply mains. This causes time-variant performance deviation of sensitive devices and overall depreciation in power quality factor. Therefore, the overall system performance is subjected to reliability issues and viable to fault occurrence. This paper proposes a stable transformerless hybrid shunt active power filter for mitigation of higher-order harmonics from the main power supply. The methodology consists of modelling, iteration and time-variant analysis of power system model at linear and non-linear load. The PI, PID and Fuzzy supervised shunt active power filter (SAPF) are designed, analysed and implemented into a nonlinear load system. The three controller performances are compared and validated with a trade-off between design complexities. Among the three proposed model fuzzy supervised and PID SAPF offers 0.49% of total harmonic distortion (THD) in supply mains. The two models are adequate to use as per the IEEE-519 standards permissible limit (less than 5%). Hence, the implementation of the proposed filter technique to commercial and non-commercial non-linear load devices reduces the harmonic distortion, enhances the power factor and improves the system reliability.

智能公用事业在家庭和商业应用中的广泛实施增强了非线性电子元件在大多数设备中的嵌入。非线性负载电流-电压 (i-v) 行为会导致在电源中插入无用的高次谐波。这会导致敏感设备的时变性能偏差和电能质量因数的整体贬值。因此，整体系统性能受到可靠性问题和故障发生的影响。本文提出了一种稳定的无变压器混合并联有源电力滤波器，用于抑制来自主电源的高次谐波。该方法包括线性和非线性负载下电力系统模型的建模、迭代和时变分析。PI，PID 和模糊监督并联有源电力滤波器 (SAPF) 被设计、分析并实施到非线性负载系统中。在设计复杂性之间进行权衡，比较和验证了三种控制器的性能。在三个提议的模型中，模糊监督和 PID SAPF 提供了电源总谐波失真 (THD) 的 0.49%。根据 IEEE-519 标准的允许限值（小于 5%），这两种模型足以使用。因此，将所提出的滤波技术应用于商用和非商用非线性负载设备可降低谐波失真，提高功率因数并提高系统可靠性。在设计复杂性之间进行权衡，比较和验证了三种控制器的性能。在三个提议的模型中，模糊监督和 PID SAPF 提供了电源总谐波失真 (THD) 的 0.49%。根据 IEEE-519 标准的允许限值（小于 5%），这两种模型足以使用。因此，将所提出的滤波技术应用于商用和非商用非线性负载设备可降低谐波失真，提高功率因数并提高系统可靠性。在设计复杂性之间进行权衡，比较和验证了三种控制器的性能。在三个提议的模型中，模糊监督和 PID SAPF 提供了电源总谐波失真 (THD) 的 0.49%。根据 IEEE-519 标准的允许限值（小于 5%），这两种模型足以使用。因此，将所提出的滤波技术应用于商用和非商用非线性负载设备可降低谐波失真，提高功率因数并提高系统可靠性。