A grid-tied photovoltaic transformer-less inverter with reduced leakage current
Document Type
Conference Item
Publication Date
1-1-2021
Abstract
The importance of transformer-less inverters has been increased since these are highly efficient, less costly, reduced in weight compared to conventional inverters for PV systems connected to grid. This fact led researchers to propose various topologies of transformer-less inverters, which have been validated for only injection of real power towards grid. However, recently new regulation has been imposed by all international power regulatory agency is that these PV inverters integrated with grid should have the capability of handling flow of a certain quantity of reactive power. By considering this point, a noble topology of transformer-less inverter has been developed for grid integrated PV system. Unlike previous topologies during reactive power injection, the new topology does not face reverse recovery issues, which helps to enhance the efficiency of the proposed inverter by exploiting MOSFET switches. Moreover, leakage current becomes low by keeping the common mode (CM) voltage at input DC voltage's midpoint. © Published under licence by IOP Publishing Ltd.
Keywords
MOSFET switches, PV inverter, Photovoltaic, Topology, Reactive power injections, Regulatory agencies, Reverse recovery
Divisions
sch_ecs
Funders
MIDF [Grant No: GA016-2019],Ministry of International Trade and Industry,Ministry of Higher Education, Malaysia [Grant No: LRGS/1/2019/UKM/01/6/3]
Publication Title
IOP Conference Series: Earth and Environmental Science
Volume
673
Issue
1
Event Title
3rd International Conference on Smart City Innovation, ICSCI 2020
Event Location
Bali
Event Dates
5 - 6 August 2020
Event Type
conference