Control algorithm for improving dynamic performance of formation and capacity grading power supply

The invention provides a control algorithm for improving dynamic performance of a formation and capacity grading power supply, the disclosed control algorithm is based on voltage and current double-closed-loop control, a voltage loop is a classic PI controller, and a current loop is a segmented variable PI controller changing along with working conditions. The algorithm is easy to implement, calculation is simple, and the dynamic performance of the formation and capacity grading power supply can be greatly improved on the premise that the steady-state performance of the formation and capacity grading power supply is guaranteed, including the rising time and overshoot of battery charging and discharging current switching and the adjusting time and overshoot of charging and discharging voltage. 本发明提供了一种改善化成分容电源动态性能的控制算法，所公开的控制算法基于电压电流双闭环控制，电压环为经典的PI控制器，电流环为随工况变化的分段变PI控制器。本发明的算法易于实现，计算简单，能够在保证化成分容电源稳态性能的前提下，大大提升化成分容电源的动态性能，包括电池充放电电流切换的上升时间与超调量、充放电电压的调节时间与超调量。