The Application Of Linear Regulator In Power Accumulator Battery Testing System For Electric Vehicles(EV)

A new subject has been brought forward in recent years of how to detect and test the performance of power accumulator battery accurately and rapidly. Power accumulator battery testing is a converting technique problem of power electronics with high performance. This paper emphasis on the research of the application of linear regulator in power accumulator battery testing system for electric vehicles (EV).It associates the traditional linear regulate technique with the rectification and active inversion technique, a plan is presented which can regulate the output current with high accuracy, low ripple(≤0.2%) and full-range by current source characteristic of the linear regulator in power accumulator battery testing system for electric vehicles (EV); Explain the topology and the operating principle of the charge and discharge main converting circuit with linear regulator; For the problem of transient surge current in charge and discharge switching process, further a method is deduced to calculate the limiting reactor; The power electronic simulation software PSIM is used to simulate the various operating states of the modified topology circuit, at last, we do the actual experiment, the results of simulation and experiment show that the plan is feasible and correct.