A New Magnetic Integrated High Gain Zeta Converter Research

In recent years,due to the intensification of environmental and energy problems,the development of new energy has been paid more and more attention,especially the continuous development and application of clean energy such as photovoltaic power generation.Therefore,high voltage gain,low ripple DC/DC converter have been gradually paid attention to.In order to improve the voltage gain of the traditional Zeta converter,reduce the current ripple of inductance and the volume and weight of the converter,the magnetically integrated switch inductance technology is applied to the Zeta converter,and the high voltage gain combined Zeta converter of the magnetically integrated switch inductor is proposed.In this paper,two traditional Zeta converters are combined,and the switching inductor structure is used to replace the energy storage inductor in the traditional converter,and the voltage gain of the converter is increased to 2 times(1+D).The working mode of the converter is analyzed,and the working expressions of each mode and the voltage stress of the converter are derived.By comparing the inductor current ripple under different inductors,the coupling mode that can reduce the current ripple is obtained.At the same time,the optimum coupling coefficient is obtained by the analysis of the inductor current ripple,and two kinds of magnetic integration schemes are designed by the magnetic integration technique,which can reduce the inductance current pattern of the converter.The purpose of the volume of waves and converters.At the end of the paper,PSIM simulation software is used to simulate the inductor current ripple under different inductors,and the experimental prototype is made to verify the theoretical analysis and simulation data.The results of simulation and experiment show that the high voltage gain Zeta converter proposed in this paper has higher electrical performance compared with the traditional Zeta converter.