Novel Architecture for plug-in Hybrid Powertrains

目前最先进的系列混合动力系统是使用车载发电机(或燃料电池)作为续航里程扩展器，通常在某个预定的放电点为电池充电，从而防止电池/超级电容器存储系统完全放电。建模表明，对于给定的标准/性能，这会导致能量存储系统组件过大。在最糟糕的情况下，目前最先进的家庭设施提供了一个软弱无力的家庭设施，电池/超级电容器的放电状态也可以根据相关时间的运行情况提供不同的车辆性能。也就是说，运营商可以随时感受到电动汽车性能的变化。提出了更好的体系结构和管理控制。该项目将把发电机组、电池和超级电容器并联到直流轨道上，作为一种具有新颖管理控制的“多源”插电式混合动力系统架构。然而，控制技术使用的是基于电流和电压变化率的控制算法，而不是大多数当前系统中的绝对值，这种技术被认为是独一无二的。初步研究/模拟表明，对于类似的整体性能，新系统在电气和尺寸上都减少了发电机组的尺寸、电池和超级电容器。从而降低所有关键要素的成本、重量和空间要求--这是一个关键的行业战略目标。这样的节约将导致更低的成本和更高的效率，从而极大地帮助低碳经济。

Current state-of-the-art series hybrid powertrains is to use the on-board generator (or fuel cell) as a range extender used to “charge the battery” usually at some pre-determined point of discharge thereby preventing full discharge of the battery/super-capacitor storage system. Modeling has shown this leads to oversized energy storage system components for a given criteria/performance. In the worst case, the current state-of-the-art provides a limp home facility also the state-of-discharge of the battery/super-capacitor can give varying vehicle performance depending on operational circumstances at the relevant time. That is theoperator can feel variance in electric vehicle performance from time-to-time.A better architecture and management control is proposed. The Project is to realign thegenset, battery and super-capacitor in parallel onto the DC rail as a “multi-source” plug-in hybrid electric powertrain architecture with novel management control. The control technique, however, uses control algorithms based on rates-of-change of current and voltage rather than absolute values as is the case in most current systems and this technique is believed to be unique. Preliminary research/modeling shows that for a like-for-like overall performance the new system reduces genset size, battery and super-capacitor both electrically and dimensionally. Thereby reducing cost, weight and spatial requirements for all the key elements – a key strategic industry objective. Such saving will lead to lower costs and higher efficiency cars and other vehicles thus greatly assisting the low carbon economy.