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针对电动汽车制动能量的回收与再利用现状,提出一种将飞轮储能装置耦合于车辆传动系统的混合动力方案,阐述了车辆运行过程中飞轮储能装置的3种工作模式:制动能量回收模式、存储能量输出模式及回收能量保持模式。设计了车用飞轮储能装置再生制动试验台及能量回收试验系统,确定以能量回收率作为指标分析和评价飞轮储能装置的能量回收效果。惯性飞轮加速至不同旋转速度时所具有的旋转动能模拟车辆以不同速度制动时的能量,完成了多目标车速下的能量回收试验,结果表明,受传动比制约,储能飞轮进行能量回收存储时存在能量平衡点,能量回收率平均值为25.28%,所开发的试验台从体系结构到控制方案都能够很好地满足制动能量回收系统的控制需求。
Aiming at the current situation of electric vehicle braking energy recovery and reuse, a hybrid scheme of coupling flywheel energy storage device to vehicle transmission system is proposed. Three operation modes of flywheel energy storage device during operation of the vehicle are described: braking energy Recovery mode, storage of energy output mode and recovery of energy retention mode. The regenerative braking test stand and the energy recovery test system for the flywheel energy storage device were designed and the energy recovery efficiency of the flywheel energy storage device was analyzed and evaluated based on the energy recovery rate. The rotational kinetic energy of inertial flywheel accelerating to different rotational speeds simulates the energy of vehicle braking at different speeds and completes the energy recovery test under multi-target vehicle speed. The results show that energy storage of flywheel The energy balance point exists, the average energy recovery rate is 25.28%. The developed test rig can well meet the control requirements of the braking energy recovery system from the architecture to the control scheme.