A VERSATILE HARMONIC CONTROL APPROACH FOR THREE PHASE INVERTER IN GRID CONNECTED PV SYSTEM WITHOUT CRITICAL ISLANDING DETECTION
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 0, Vol 4, Issue 11
Abstract
A versatile harmonic control approach for three phase inverter in DG for PV cell with MPPT based on P&O Technique that enables both islanded and grid-tied modes of operations with no need for switching between two corresponding controllers/critical islanding detection is implemented using MATLAB/Simulink. The demonstrated versatile harmonic control approach composes of an inner inductor current loop and a simple voltage loop in the SRF. The inverter is regulated as a current source just by the inner inductor current loop in grid-tied operation and the voltage controller is automatically activated to regulate the load voltage upon the occurrence of islanding. An inductor current control loop is essential for obtaining high power quality in grid connection of inverters. It provides three-phase balanced current injection to the grid. Another advantage of using current control is that non linearities, such as inverter switching and external disturbances such as changes in the dc-link voltage Vdc and disturbance of the grid voltage Vg , are dealt within that loop. Thus, the control approach does not need a forced switching between two distinct sets of controllers. Moreover, the waveforms of the grid current in the grid-tied mode and the load voltage in the islanding mode are distorted due to the presence of non linear local loads with the conventional control strategies. This issue is addressed by explaining a versatile harmonic load current feed forward control approach
Authors and Affiliations
Swetha Sajeev
Keywords
Related Articles
- EP ID EP106570
- DOI -
- Views 68
- Downloads 0
OPTICAL TIME-DOMAIN REFLECTOMETER SCHEDULING IN OPTICS
With increase in usage of optical fiber for digital data communication which is replacing copper cables. Optical fiber cuts or bends identification with emerging technology is also important, as we cannot dig and...
Use of Pet Bottles Scrap as an Additive in Concrete
The management of waste materials is a gargantuan problem these days. Hence, the researchers are trying to use waste materials as an additive to concrete. The present work was aimed at assessing the effect of PET...
rp-open Sets and Maximal rp-open Sets
The object of the present paper is to study the notions of minimal rp their basic properties are studied.
IMPLEMENTATION AND DESIGN THREE SOFTWARE USING REUSABLE SOFTWARE CONCEPT “ANALYTICAL STUDY”
There are two ways for the principle of re-use software and the first way is the indirect method indirect boils down to the use of one or more pieces of software in the production and creation of new programs witho...
Google Glass and its Role in Modern Education
Google has developed a wearable computer optical head-mounted display research and development ubiquitous computer. Glass displays information in a natural language gadget with an (OHMD) the project Project Glass...