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 69
- Downloads 0
BLAST LOADING OF STRUCTURES - A REVIEW
The use of explosives in vehicles to attack city centers has become a common technique by terrorist organizations around the world. A bomb explosion within or in the vicinity of a building can cause significant da...
ZIGBEE AND GSM BASED PATIENT HEALTH MONITORING SYSTEM
Care of critically ill patient, requires spontaneous & accurate decisions so that lifesaving therapy is properly applied. Statistics reveal that every minute a human is losing his life across the globe. In Indi...
A CPW Fed Octagonal Patched Antenna for UWB Applications
In this paper, we present a CPW fed octagonal patch antenna with hexagonal slot for ultra wideband (UWB) application. The proposed antenna is designed on FR4 substrate with dielectric constant 4.4 has dimension 29 X 31...
A SURVEY OF VARIOUS SECURITY ATTACKS IN MANETS
Mobile Ad hoc network (MANET) is considered a gathering of wireless portable nodes that are accomplished of shared with each other without the usage of a network infrastructure. MANET is mostly weak due to its essent...
Optimal Routing Algorithm used in Wireless Mesh Networks for Energy Efficiency
Wireless networking has witnessed an explosion of interest from consumers in recent years for its applications in mobile and personal communications. As wireless networks become an integral component of the moder...