Research On High Gain Converter With Combined Structure Of Magnetic Integrated C-L-D Three-terminal Network

With the excessive exploitation of non-renewable energy,environmental problems have become a huge problem that we must overcome.Reducing the development and utilization of non-renewable energy such as coal and oil is the primary difficulty we need to face now.Clean energy such as wind power and photovoltaic power generation has become our research,and the research of DC-DC converter is one of the hotspots of our research.This thesis mainly studies the topology and magnetic integration technology of DC-DC converter.The specific analysis is as follows:This thesis first analyzes the traditional Zeta converter,and proposes a C-L-D three-port network unit consisting of inductors,capacitors and diodes,and then expands a variety of combined structures and analyzes them.Inspired by the switching inductors and capacitors,the different network elements are reasonably combined to obtain a new combined structure,which achieves the effect of increasing the voltage gain.Through the magnetic integration technology and reasonable design of the coupling coefficient,the front-end inductor current ripple in the topology.Effective reduction can be achieved while reducing the voltage loss of the switching tube.The three-port network is analyzed,and one of them is combined in the latter stage of the Zeta converter to form a new combined Zeta converter,and the working mode analysis is performed.In this thesis,taking the L/C combined Zeta converter as an example,the modal analysis of the proposed topology is carried out,and the conclusion is that the output voltage has a double gain effect,which reduces the stress and loss of the switching tube.Through the coupling integration technology,the current ripple of the inductor is effectively reduced,and the coupling coefficient of the component is analyzed to design the magnetic component.Finally,the experiment was simulated by using Psim simulation software and experimental prototype data,and the correctness of theoretical analysis was obtained.