• Arsh Khan
• Aman Dev Shrivas
• Sumit Kumar Jaiswal
• Priyanshu Tiwari
• Suraj Thawait

The end user frequently deals with challenges with power quality, including harmonics. It has a number of undesirable consequences in an electrical system. It needs to be decreased for a seamless and efficient operation. In the study mentioned, the Shunt Active Power Filter (SAPF) has been designed for enhancing power quality by decreasing harmonic that is produced when a non-linear load is used. The control approach is governed by the direct-quadrature-zero (DQZ or DQ0) theory. By supplying compensating current in such a way that it generates source current with a sinusoidal wave form regardless of the nonlinear load at the end, harmonics are eliminated. The source current's harmonic current is monitored by the hysteresis current controller. The control approach used to generate a compensating reference current is too much reliant upon SAPF's efficacy. MATLAB-Simulink is used for simulating the shunt active power filter's results using the dq0 theory. Source current experienced a 47.81 % THD (Total Harmonic Distortion) without shunt active power filter as a result of the switching of the nonlinear load in system. The shunt active power filter (using dq0 theory) has enhanced source current THD by lowering it to 2.99%. The project has reached its conclusion with an evaluation of how effectively the SAPF system improves power quality and reduces harmonics.

FACTS, FFT, THD, SAPF, DQ0 Theory

"Power Quality Improvement by Mitigation of Harmonics Using DQ0 Theory In Shunt Active Power Filter", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.g146-g153, May-2023, Available :http://www.jetir.org/papers/JETIR2305621.pdf

"Power Quality Improvement by Mitigation of Harmonics Using DQ0 Theory In Shunt Active Power Filter", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. ppg146-g153, May-2023, Available at : http://www.jetir.org/papers/JETIR2305621.pdf