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In recent years, for realizing a sustainable society, the deployment of renewable energy such as photovoltaic (PV) power and vehicles that emit no \(CO_2\) , such as electric vehicles (EVs), is highly expected. On the other hand, due to large fluctuations in power generation throughout the day, further utilization of PV induces the duck curve, which degrades the efficiency of traditional thermal power generation. This paper discusses how to utilize PV while mitigating the duck curve by using battery swapping EVs (BSEVs). The proposed system uses the storage capacity of battery swapping stations (BSSs), which hold spare batteries for BSEVs, as stationary batteries for electricity time-shifting. In addition, the proposed system incorporates the mobility of BSEVs to coordinate capacity among BSSs, thereby improving the utilization of PV. To enable this coordination, the system employs two methods to mitigate traffic congestion caused by BSEV operations. This paper clarifies that these two methods effectively alleviate the duck curve though the performance evaluations.

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An Efficient Battery Migration Strategy for Duck Curve Alleviation in Battery Swapping EV Infrastructure

  • 会议论文

  • 发表日期：

    2026年

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  • Yuka Tsushima,
  • Tetsuya Shigeyasu

摘要

In recent years, for realizing a sustainable society, the deployment of renewable energy such as photovoltaic (PV) power and vehicles that emit no \(CO_2\) , such as electric vehicles (EVs), is highly expected. On the other hand, due to large fluctuations in power generation throughout the day, further utilization of PV induces the duck curve, which degrades the efficiency of traditional thermal power generation. This paper discusses how to utilize PV while mitigating the duck curve by using battery swapping EVs (BSEVs). The proposed system uses the storage capacity of battery swapping stations (BSSs), which hold spare batteries for BSEVs, as stationary batteries for electricity time-shifting. In addition, the proposed system incorporates the mobility of BSEVs to coordinate capacity among BSSs, thereby improving the utilization of PV. To enable this coordination, the system employs two methods to mitigate traffic congestion caused by BSEV operations. This paper clarifies that these two methods effectively alleviate the duck curve though the performance evaluations.