Abstract: The synchronization with the grid uses Phase Locked Loop (PLL) for finding the angle at which the wave is travelling. Synchronization would help in both the power factor correction and the harmonic reduction due to the load. The load compensation is the way these harmonics are compensated by use of the PLL techniques. The PI controller would be involved with the PLL in the grid synchronization. The dynamic performance of the grid interfacing depends on the PI controller. This paper targets an attempt to develop a PLL less grid interfacing technique, which would be used for the power factor correction and the harmonic elimination. The notch filter algorithm is used to remove a particular amount of frequency from the signal during the signal detection mode before giving it to the current controller, which is used for the power factor correction using the harmonic elimination algorithms. This implementation is carried out with the solar panel as the input with the boost converter supplying the inverter. The Maximum Power Point Tracking (MPPT) controller is used in the boost converter for tracing the maximum power from the solar panel. Perturb and observe method for the MPPT algorithm is used in this implementation. The notch filter output is given as the reference to the PWM generation in order develop a PWM that would reduce the harmonic current effect to the load side, A synchronized wave is generated in the output of the inverter that would be used to be connect to the single phase grid. The Mat lab based simulation of the whole closed loop implementation would be carried and the results are discussed and tabulated.
Keywords: MPPT, P&O, Single phase PLL-less, Harmonic Elimination, Boost converter, PCC, PWM, and Notch filter.
Title: Single Phase Grid Synchronization by Load Compensation Using Photovoltaic Generation System
Author: Roopa Nayak H., Ashwini A.
International Journal of Electrical and Electronics Research
ISSN 2348-6988 (online)
Research Publish Journals
