混合储能系统能量转移双环控制策略

摘要

针对混合储能系统精确控制能量转移问题，提出了双环控制策略，即外环采用均衡控制策略，降低蓄电池组的大倍率放电时间和发热量，并保证蓄电池组的一致性，延长蓄电池系统使用寿命；内环采用时序串联控制方法，并分析了传统恒流充电方式由于器件杂散参数偏差导致充电精度低的问题，提出了时序重构方法来消除误差影响，以满足系统快速精确充电的要求。最后，通过仿真验证了该方法的有效性。%Since it′s hard to control the energy transforming precisely in hybrid energy storage,a double loop control strategy is proposed.The balance control strategy is applied in outer loop,which can reduce heat and discharging time under high ratio and ensure the consistence between batteries.At the same time the life span of battery system can be extended.The sequential cascade control is used in inner loop.Based on the analysis of the problem of charge with low accuracy caused by distribution parameters in the circuit,the sequential reconstruction strategy is put forward to satisfy the demand of quick and accurate charge.Simulations are carried out to verify the control strategy.