Fuzzy based Modular Cascaded H-Bridge Multilevel PV Inverter with Distributed MPPT for Grid - Connected Applications
Journal: International Journal for Modern Trends in Science and Technology (IJMTST) (Vol.2, No. 11)Publication Date: 2016-11-02
Authors : G. Mani; B. Gopal;
Page : 52-59
Keywords : IJMTST;
Abstract
The inverters are categorized according to the configuration of the PV system, the configuration of the conversion stages within the inverter and whether they use transformers. After the introduction of the state of the art of inverters for PV systems with and without transformers, the paper focuses on some known problems and challenges for transformer less inverters. Topologies without transformers have big advantages like low weight, volume and cost. In addition they often reach higher efficiencies than topologies with transformers. Eliminating the leakage current is one of the most important issues for transformer less inverters in grid-connected photovoltaic system applications, where the technical challenge is how to keep the system common-mode voltage constant to reduce the leakage current. To realize better utilization of PV modules and maximize the solar energy extraction, a distributed maximum power point tracking control scheme is applied to both single- and three-phase multilevel inverters, which allows independent control of each dc-link voltage. For three-phase grid-connected applications, PV mismatches may introduce unbalanced supplied power, leading to unbalanced grid current.
Other Latest Articles
- Efficient Method of Power Saving Topologically-Compressed With 21Transistor’s Flip-Flop using Multi Mode switches
- Implementation and Estimation of Delay, Power and Area for Parallel Prefix Adders
- PV Cell Fed High Step-up DC-DC Converter for PMSM Drive Applications
- Computational Estimation of Flow through the C-D Supersonic Nozzle and Impulse Turbine Using CFD
- Implementation of Low Power and Area-Efficient Carry Select Adder
Last modified: 2016-12-04 11:55:11