Open AccessHow to Improve the Step-up Ratio of DC Converter by Coupling Inductance and Switching Capacitance
Author(s) -
Bin Wang,
Liangping Xia
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1578/1/012163
Subject(s) - inductance , converters , boost converter , electrical engineering , capacitor , capacitance , photovoltaic system , voltage , materials science , ćuk converter , switched capacitor , electronic engineering , engineering , physics , electrode , quantum mechanics
In grid-connected power generation system, the output voltage of single photovoltaic module and fuel cell is generally low. In order to meet the requirements of the latter grid-connected inverters, DC converters need to have a high boost ratio to raise the output voltage of photovoltaic cells or fuel cells to a higher voltage. A high boost ratio DC/DC converter based on switched capacitor and coupled inductance is proposed in this paper. Coupled inductance is introduced on the basis of switched capacitor high boost ratio DC/DC converter. The voltage stress of power devices is reduced, and the conduction loss and switching loss are also reduced, which can effectively improve the conversion efficiency. Finally, the experimental results verify that using the coupled inductance could make the DC converter have higher conversion efficiency.