Research On Performance Optimization Of Bidirectional Boost Converter

With the rapid development of science and technology,the demand for fossil energy is increasing.However,after centuries of mining,fossil energy is gradually depleted.The particulate pollution and waste generated by the burning of fossil fuels have also caused extremely bad effects on the environment.Intensified,global warming,so exploring new energy sources and developing new power generation systems has become an important international research topic.In order to make full use of natural conditions and achieve sustainable development of the global economy,people began to focus on the use of natural resources such as wind and light as power generation.Wind-solar hybrid power generation systems have received increasing attention.This paper takes the multi-input DC converter in the wind-solar hybrid power generation system as the research object,expounds the development history of the multi-input DC converter,and investigates the performance difference of the isolated,non-isolated and isolated multi-input DC converters with switches.Advantages and disadvantages of different types of converters.On this basis,the variable structure topology of the dual-input high-gain Boost converter is investigated.By analyzing its working principle,the voltage gain and current ripple of the converter are calculated,and the performance advantages of the high-gain Boost converter are summarized.The integrated structure illustrates the coupling degree of the inductor and the design principle of the "EE"-shaped coupled inductor integration.Furthermore,the characteristics of the combined dual-input high-gain Boost converter with symmetrical structure are analyzed.The voltage gain of the converter and the voltage stress of the switch and diode are calculated under the two control modes of complementary control and interleaving control.The data performance comparison of the converter and the non-combined converter gives the advantages of the combined two-input high-gain Boost converter.Finally,in order to verify the above conclusions,it is authentic and scientific.The PISM simulation software is used to simulate the working state of the combined dual-input high-gain Boost converter under the two control modes of complementary control and interleaved control.Through a series of tests,the test data is obtained.Based on the obtained graphs and data,the reliability of the paper analysis and the subject inquiry is verified.It is pointed out that the new combined dual-input high-gain Boost converter proposed in this paper has high practicability.