Title :
A Zero-Voltage transition full bridge DC-DC converter for photovoltaic applications
Author :
Bellini, Armando ; Bifaretti, Stefano ; Iacovone, Vincenzo
Author_Institution :
Electron. Eng. Dept., Univ. of Rome Tor Vergata, Rome, Italy
Abstract :
The paper focuses on a high efficiency Zero Voltage Transition (ZVT) DC-DC full-bridge converter using a high-frequency transformer. A novel structure with recovery of energy on load side is proposed. Such solution is particularly suitable for photovoltaic applications which require low losses and cannot recovery energy on source side. Moreover, a suitable architecture of snubber circuit that permits to improve significantly the efficiency is discussed. Analysis of its operating modes and a comparison of the conversion efficiencies with conventional ZVT-PWM converters are given. Design example of a 750 W 100 kHz DC-DC converter and different PSPICE simulation tests are provided.
Keywords :
DC-DC power convertors; PWM power convertors; high-frequency transformers; photovoltaic power systems; PSPICE simulation tests; ZVT-PWM converters; frequency 100 kHz; high-frequency transformer; photovoltaic power systems; power 750 W; zero-voltage transition full bridge DC-DC converter; Bridge circuits; DC-DC power converters; Inductors; Oil insulation; Photovoltaic systems; Pulse width modulation converters; Resonance; Solar power generation; Switching converters; Zero voltage switching; DC-DC power conversion; Photovoltaic power systems; Pulse width modulated power converters; Resonant power conversion;
Conference_Titel :
Power Electronics Electrical Drives Automation and Motion (SPEEDAM), 2010 International Symposium on
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-4986-6
Electronic_ISBN :
978-1-4244-7919-1
DOI :
10.1109/SPEEDAM.2010.5542123
