摘要
针对光伏发电系统在电动汽车充电应用中存在充电时间长、充电电压波动大及最大功率点跟踪(MPPT)速度慢等问题,研究并设计一种车载环境下太阳能充电系统。基于电导增量法,提出适合车载工况下的修正变步长电导增量MPPT法。对充电系统中实现MPPT控制的Boost电路,与用于充电控制的Buck电路以及PI控制器进行建模与分析。基于PSIM仿真平台验证所提MPPT法的快速追踪性能,及充电系统充电电压摄动小、稳态精度高;又通过有无MPPT功能的充电实验对比,表明系统还具有充电时间短、效率高的优势。
The vehicle-mounted solar charging system was designed to overcome the problem of long charging time, large fluctuation of charging voltage and low speed of Maximum Power Point Tracing （MPPT）. Based on incremental conductance, this paper put forward an incremental conductance MPPT method with modified variable step size that applicable to the environment of vehicle. It also analyzes and models Boost circuit for MPPT control, Buck circuit for charging method charging control and PI controller. On the basis of PSIM simulation platform, it verifies the fast-track of the MPPT introduced by this paper, and small disturbance and high steady accuracy of the charging system. Through tests with and without MPPT, the system also demonstrates advantages of short charging time and high efficiency.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2016年第1期84-91,共8页
Acta Energiae Solaris Sinica
基金
北京市教委科技计划面上项目(KM201510858004)
北京电子科技职业学院重点课题(YZKB2014008)
