Investigation Of Charge And Discharge For Battery Based On Techniques Of Bidirectional Converter

With the more and more wildly use of storage battery in every field of nation,how to charge the battery quickly,safely and efficiently become very important.Direct rectifying or rectifying using thyristor is adopted by most traditional charge device. Though it has complete technique and low price using that two method of rectifying,it also has many disadvantages.So,high frequency,high efficiency and small volume.A high-efficiency,high-power and energy-saving PWM storage battery charge and discharge system is presented in this paper.On the basis of analyzing the working principle and charging peculiarity of battery,we adopte the intellectual charge and discharge method of working module and working parameter expediently installed to make the charging course simulate the best charging curve.This paper researchs the principle of three-phase Voltage-Source reversible PWM inverter. The converter based on the intelligent power module(IPM) is designed. For the requirement of real-control, the control algorithm is wrote with the TI company's commom digital signal processor TMS320F240,so the real-control, adjustable power factor, constant voltage and current output and two-way transtormation of energy are realized. In order to fulfill working module and working parameter can be installed,MSP430F149 also made by TI company is choosed. It also achieve communication with PC. you may get the operating state of device by PC.On the basis of deducing the reversible converter's mathematical model,the Matlab simulation model is achieved. The choice of control strategy and design of modulater. Finally,the experimental results verify the correctness of the proposed control strategy and simulation.