In this paper,a smart PV-BES-Charger architecture is described and a real-time energy management strategy is proposed which can be easily implemented by a microcontroller.As opposed to the AC busbar deployed in conventional integrated PV-BES-Charger system,this EV charger architecture is based on DC busbar system.An energy storage system is directly connected to the dc busbar to supply the bus voltage.This linkage,via power converters,enables the energy exchange between the energy storage system and the grid,the solar panel and the electric vehicle.By analyzing and searching for the most efficient transmission route in the electrical system and exploiting the peak/valley electricity price,an energy management strategy is proposed.The strategy is proven to fully utilize the solar panel and energy storage with a low-C-rate charge/discharge profile and reduce the expense of EV charger usage.Under the scene of sunny day and three times of non-commute EV charging,the total income is increased by 28%by using this strategy.
维普
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