Research On Combined Dual Input High Gain Boost Converter

The countries affected by haze,climate warming,the influence of the phenomenon such as ozone depletion is more and more big,the reasons for the phenomenon is caused by human excessive dependence on traditional energy.In order to change this situation,people began to realize the importance of new energy,at the same time an efficient hybrid wind power and solar energy power generation has become a scholar research hot topic at present.In this field of modern scientific research,a high-gain dual-input Boost is an unignorable device.To raise the voltage gain of the Boost converter with two inputs,current ripple is reduced,the switch tube voltage stress is reduced,smaller volume weight of the converter,this paper applies the switch inductance unit in the traditional Boost converter with two inputs,and the traditional Boost converter topology with two inputs are certain improvement,proposed a combined high gain Boost converter with two inputs.First by variable structure topology to realize through the different combination of switch switch group to use the same set of circuit elements under the single input and double input state makes the purpose of the converter can be high gain.With the switch inductance structure to replace the traditional energy storage the inductance of transformer,improve the voltage gain of the converter,by referencing the switch inductance enables the proposed converter in the condition of single input state and input voltage gain for the traditional Boost converter with two inputs of 2(1 + D)and 1 + D times.Through the magnetic integration technology of inductance coupling design,reduced the volume and weight of the converter,through calculating the equivalent inductance of high gain Boost converter with two inputs,equivalent static inductance and the equivalent for transient inductance current ripple and the transient current response speed and the coupling between the inductance is the relationship between coupling coefficient and reverse coupling coefficient,it is concluded that high gain Boost converter coupled inductor design criteria.And then by symmetrical topology is proposed combined high gain the Boost converter,analyzes the combination of high gain Boost converter of two kinds of control mode,and it is concluded that the complementary control,controlled by the phase shift and cross sectional double input Boost converter in the condition of single input and double input voltage,can get high gain further decrease of the voltage of the switch stress,reduce the current ripple.Finally,the steady-state and transient characteristics of the converter are simulated by the PISM simulation system and the experimental prototype,and the correctness of the theoretical analysis is verified.The result of simulation and experiment can be found that the two-input Boost converter,which is proposed in this paper,has higher electrical performance than the traditional converter.