Grid Interconnected Photo Voltaic System Using Shunt Active Filter for Power Quality Improvement

Abstract

Now-a-days, power generation and utilization became more complicated which further affects the economy of a country. The available non-renewable energy sources that supply the demanded power do not consider environmental challenges like global warming and pollution. This leads to the development of power generation based on Renewable Energy Resources (RES). These RES are connected to the grid through power electronic converters which offer countless power quality issues that must be rectified to deliver a quality power to the end users. The proposed work uses a three phase Voltage Source Inverter (VSI) based Shunt Active Power Filter (SAPF) fed by solar Photo Voltaic (PV) system to eliminate current harmonics at the source side of the grid. The output of the PV system is given to a boost converter along with self–lift single-ended primary-inductor converter (SEPIC) for supplying high voltage gain which is accompanied by a Perturb & Observe Maximum Power Point Tracking (MPPT).The main objective of this paper is to eliminate the current harmonics at the grid side using SAPF. Also, the proposed SAPF is used for exporting the power generated from PV to the grid. The overall system performance is validated with a help of MATLAB/SIMULINK.

Identification of harmonic source location in power distribution network

“…where for harmonic component, h is any positive integer whereas, for interharmonic, h is any positive non-integer. Furthermore, the proposed method was tried and verified on an experimental setup in October, November, and December 2021, with the harmonic producing load in the linear area (amplitude modulation index is 0 ≤ 𝑚𝑎 ≤ 1 and inverter switching frequency range is between 2 kHz and 15 kHz) [82]. Surprisingly, as demonstrated in Figure 9, the proposed method offers 100 percent accurate harmonic source location detection.…”

A Grid-Connected Photovoltaic Interface System for Delivering Active and Reactive Powers

“…In a gridconnected PV system, the PV is commonly interfacing the grid through a voltage source inverter [2]. The major concerns of the PV interface are the efficiency and controllability, including the power quality [3], [4], when it is connected to the grid which not only absorbs active power, but also reactive power. The inverter of PV interface has to be able to operate in reactive power mode, instead of in active power mode [5].…”

Solar energy based impedance-source inverter for grid system

“…Moreover, the impedance-network of three phase impedance-source inverter comprising a pair of capacitors and inductors forms the second order filter that filters unwanted voltage sags thereby reducing the current total harmonic distortion and improving the quality of power. Consequently enhanced power quality without sag and lesser total harmonic distortion is given to load [11], [12] and [13].…”