Research And Application Of DC-DC Converter With High Voltage Gain

Recently,energy issues and environmental problems have become more prominent.More people are committed to the development of new energy sources,mainly clean energy such as photovoltaic power generation.Therefore,the more attention is paid on it is possible to use high voltage gain and low ripple DC/DC converters.The application of the magnetic integrated switching inductor technology in traditional DC-DC converter can reduce the inductor current ripple and the quality and volume of the converter,and enhance the voltage gain of the traditional DC-DC converter.This technique will be applied in this paper: the switch inductor structure is used instead of the conventional transform.The energy storage inductor in the device promotes the voltage gain of the converter,which is the previous(1+D)times.By studying the voltage stress of the device,it is found that the voltage reflected by the voltage stress of the diode and the switching tube is the voltage across the capacitor C1.In the analysis of the inductor current ripple under different coupling modes,find the most suitable coupling method to reduce the inductor current ripple,and study the inductor current ripple to find the best matching coupling coefficient,and apply the magnetic Integrated technology reduces converter volume and inductor current ripple.In this paper,the three-terminal switching device modeling method is used to model the converter.At the same time,the transfer function is obtained.With the system stability and transfer function as the direction and basis,the control is implemented in accordance with the actual additional design.At the end of this chapter,PSIM software is used to study the case of inductor current ripple in different coupling modes,and the operation practice simulates the stability of the converter.Combined with the test and simulation analysis,the results show that the magnetic integrated switching inductor high voltage gain DC-DC converter proposed in this paper has obvious advantages compared with the traditional DC-DC converter,and has more stable electrical performance.