Title :
Efficiency improvement of a high step up high efficiency converter for photovoltaic applications based on three-state switching cell
Author :
Babaee Zarch, M.J. ; Zolghadri, Mohammad Reza ; Hajimoradi, M.R.
Author_Institution :
Sharif Univ. of Technol., Tehran, Iran
Abstract :
This paper suggests methods for improving efficiency of a high step up high efficiency converter based on three state commutation cells. A loss analysis has been performed to identify the source of power loss. Based on this analysis, methods are presented to reduce losses in the most power dissipating elements. These methods include replacing some power diodes with large conduction losses with MOSFETs having small on-state resistance. Efficiency improvement up to %1.25 percent is verified in simulation and experimental results.
Keywords :
MOSFET; commutation; diodes; photovoltaic power systems; power convertors; MOSFET; high step up high efficiency converter; loss analysis; photovoltaic applications; power dissipating elements; power loss source; three state commutation cells; three-state switching cell; Capacitors; Inductors; Lead; Logic gates; MOSFET; Switches; Zero voltage switching; Efficiency improvement; High step up DC/DC converter; photovoltaic;
Conference_Titel :
Power Electronics, Drive Systems and Technologies Conference (PEDSTC), 2013 4th
Conference_Location :
Tehran
Print_ISBN :
978-1-4673-4481-4
Electronic_ISBN :
978-1-4673-4483-8
DOI :
10.1109/PEDSTC.2013.6506751
