中国电机工程学报Issue(16)：4035-4042,8.DOI:10.13334/j.0258-8013.pcsee.2015.16.005
增程式电动汽车功率流优化策略
Power Flow Optimization Strategy of Range Extender Electric Vehicle
摘要
Abstract
In order to avoid the continuous decline in battery state of charge (SOC), reduce the regulation frequency of engine speed and generator torque, and improve the vehicle fuel economy when the range extender electric vehicle is working in range-extended mode, an auxiliary power unit (APU) power flow optimization method was proposed in this paper. Firstly, the measured vehicle real-time electric power was revised according to the generator efficiency, battery SOC and power variation rated in turn, and then the target APU power was obtained. Meanwhile the engine on/off control strategy was designed based on the vehicle power demand and battery SOC. Then, the target engine speed and generator torque was obtained according to APU fuel-electricity conversion efficiency features and optimal APU fuel-electricity conversion efficiency curve. Finally, bench experiment was performed under new European driving cycle (NEDC), federal test procedure (FTP) and high way fuel economy test (HWFET) driving cycles. The results showed that the proposed approach avoided the continuous decline in battery SOC, and improved the vehicle fuel economy effectively, and it also lowered the performance demands on engine speed and generator torque control systems.关键词
增程式电动汽车/增程器/发动机/发电机/功率流Key words
range extender electric vehicle/auxiliary power unit/engine/generator/power flow分类
信息技术与安全科学引用本文复制引用
申永鹏,王耀南,孟步敏,李会仙..增程式电动汽车功率流优化策略[J].中国电机工程学报,2015,(16):4035-4042,8.基金项目
国家863高技术基金项目(2012AA111004)；国家自然科学基金项目(61104088)。 The National High Technology Research and Development of China 863 Program (2012AA111004) （2012AA111004）
Project Supported by National Natural Science Foundation of China (61104088) （61104088）
