Research On Control Method Of Dual Active Bridge Converter

Currently,productivity,scientific,technical and industrial productivity are growing rapidly in the critical period of China’s national rejuvenation,which brings us many challenges and difficulties.Among the numerous development problems,the consumption of renewable resources and environmental pollution have gradually exerted a far-reaching influence on our production and life.For advice on the development of new highly efficient and clean energy,the Chinese class includes clean energy such as hydropower,new world energy such as solar and wind energy,and new energy production technologies such as conventional technology.When researchers are involved,the industry is a new technology with high environmental impact,has the unstable factors,therefore,we need energy storage device is used to balance the system energy fluctuations.Two-way DC-DC converter as an important power electronics device control of energy flow,can be used as energy storage devices and power grid energy bi-directional transmission between the best "bridge",how to choose the use of appropriate two-way DC-DC converter topology in order to realize the fault isolation,energy efficient flow is a hotspot of current research,and in this paper,we study the dual active bridge bidirectional DC-DC converter has a wide range of power adjustment ability,and contains high safety isolation structure,symmetrical structure simple easy to study can be widely used with high power.In this white paper,we study a two-way DC and DC converter with two-way bridges.To analyze and study the difference between the given power and the range of the soft switch,analyze the principle of operation of the inverter and combine it with the actual operation,the mode of phase shift control during operation,single PWM+ phase shifting control mode and double PWM+ phase shifting control mode are discussed respectively.The most important research content of this paper mainly focuses on single PWM+ phase shift control and double PWM+ phase shift control.So,use the Matlab / Simulink tool to create simulation models to control one PWM and phase shift,respectively.and double PWM plus phase-shift control two kinds of simulation approach to simulation modeling experiment,through the comparative analysis to map the transmission power P under two kinds of control mode of phase shift duty ratio D phi curves,and draw the conclusion: dual PWM plus phase-shift control than single PWM plus phase-shift control power under the wide input or output voltage range wider adjustable range adjustment is more flexible,dynamic performance and stronger.