Integrated Maximum Power Point Tracking and Harmonic Reduction in a Grid Interactive Solar PV Inverter
Abstract
A solar photovoltaic (PV) cell exhibits a non-linear i-v characteristic and its maximum power point (MPP) varies with solar insolation and temperature. A dc-to-dc converter is generally employed along with inverter circuit to operate the solar PV system at maximum power point. This adds to the cost, which increases significantly with the size of the system. Moreover, grid-tie inverter employing thyristors has square wave line current which is rich in harmonic contents. Pulse Width Modulation (PWM) based inverters employing IGBT or MOSFET are less reliable and has low power handling capability. The paper describes a converter topology employing discontinuous phase control technique for a solar PV based grid-tie inverter. The system is simulated by SIMULINK/MATLAB and the performance is experimentally verified. There is substantial reduction in harmonics of the line current which can be further reduced by filters. The developed control algorithm does away with the dc-dc converter needed for maximum power point tracker (MPPT). Thus, one conversion unit of dc-to-dc converter is avoided to control MPP.Keywords: Discontinuous conduction, grid tie inverter, maximum power point tracker, total harmonic distortion
Zusätzliche Dateien
Veröffentlicht
Ausgabe
Rubrik
Lizenz
Declaration and Copyright Transfer Form
(to be completed by authors)
I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.
· I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.
· I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).
· I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.
· I/We also agree to the authorship of the article in the following order:
Author’s name
1. ________________
2. ________________
3. ________________
4. _______________
We Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal. |
