@ARTICLE{ iet:/content/journals/10.1049/joe.2018.8507, author = {Jiye Liu}, author = {Zedong Zheng}, author = {Kui Wang}, author = {Yong Dong Li}, keywords = {zero voltage switching range;topologies;charging current issues;photovoltaic system;high voltage conversion ratio;photovoltaic DC collection;full-bridge boost converter;variable voltage conversion ratio;photovoltaic DC system;active clamp;AC network;variable voltage gain DC/DC converters;DC collection network;}, language = {English}, abstract = {DC collection network offers an attractive alternative to AC network for photovoltaic, as it avoids the charging current issues and reduces the size and weight. Variable voltage gain DC/DC converters play an important role in DC collection network. Two topologies suitable for photovoltaic DC collection are studied. Boost and LLC converter and active clamp isolated full-bridge boost converter are two converters with high and variable voltage conversion ratio suitable for the photovoltaic system. This work investigates the two converters comprehensively. The topologies are analysed so as to summarise and compare the characteristic of the converters. Soft switching condition is compared to help extend the zero voltage switching range. Voltage and current stress of the two converters are calculated. Loss comparison is made with the theoretical analysis. Advantages and disadvantages are summarised to get a deep insight into their application field.}, title = {Comparison of boost and LLC converter and active clamp isolated full-bridge boost converter for photovoltaic DC system}, journal = {The Journal of Engineering}, issue = {16}, volume = {2019}, year = {2019}, month = {March}, pages = {3007-3011(4)}, publisher ={Institution of Engineering and Technology}, copyright = {This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)}, url = {https://digital-library.theiet.org/;jsessionid=14pt762xl57b0.x-iet-live-01content/journals/10.1049/joe.2018.8507} }