Unified Power Quality Compensators (UPQC) in load side utility system is not able to fully suppress harmonies in power grid and distortion in the interface system. To enhance the operation of the UPQC, a Fuzzy based Modified Universal power quality conditioning system (Fuzzy-MUPQCS) is developed. Modified Universal power quality conditioning system (MUPQCS) is a combination of two active filters in series and one active filter in shunt. A 3φ voltage source inverter is also used to maintain a common DC link capacitor voltage through Photo voltaic (PV) system connected to a utility grid. Highest Power Point Tracking (HPPT) algorithm is mainly used to pull out the maximum amount of power in the PV system. In this paper, Proportional integral controller based MUPQCS (PI- MUPQCS) and Fuzzy-MUPQCS are used to analyse the load voltage and load current distortion, THD analysis, power factor measurement, grid voltage and grid current distortion in the three phase system under nonlinear load conditions. The execution of the MUPQCS based 3φ system and the controllers are simulated using Matlab /Simulink model.

Aim: The aim of this work is to construct an innovative pMos logic based comparator and analyze the power consumption and compare with the nMos logic based comparator. Material and methods: The comparator is designed by using the Tanner tool version 16.01 for simulation and verification. By varying the length of a transistors in a circuit the power values were obtained. This experiment is performed for 20 different values of length. Results: The power consumption of a pMos logic based comparator was minimum (2.2656 ± 0.37933), followed by the nMos logic based comparator (7.7494 ± 0.41603), the less power consumption seen in pMos logic based comparator significance (.955). Conclusion: The consumption of power by the constructed pMos logic based comparator appears to have less power consumption than the nMos logic based comparator.

Highlights• Mitigate voltage sag, fault current during single line to ground fault.• Analysis of real and reactive power during fault conditions. • Analysis of Total Harmonics Distortion during prefault, L-G fault and post fault conditions. • Analysis of Interharmonics and Subharmonics during prefault and post fault conditions. • Analysis of Inrush current during starting of three phase induction motor.