In Japan, the introduction of photovoltaic systems, one of a renewable energy sources, has been encouraged by the government. A new energy supply system for tram power lines which can directly collect and use PV outputs is proposed as a method for PV utilization without relying on feed-in tariff. In the system, PVs are installed at public schools located along tram lines, and DC/DC interfacing converters are installed near tram stops. In this paper, a detailed algorithm and a brief algorithm are proposed to optimize the allocation of interfacing converters for the maximum economic benefits while considering fluctuations of PV output and tram load. The PV-converter systems and tram power systems were modeled as electric circuits in both algorithms. The brief algorithm can find the optimal allocation 0.487% of the time compared to the detailed algorithm while maintaining practical accuracy.
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