Electronic frequency converter feeding single-phase circuit for Shinkansen

In the Tokaido Shinkansen, the instantaneous feeding power of substations increases because of the high-density train schedule and the improved acceleration performance of the rolling stock. If the load power of feeding substations increases further, it will not be possible to maintain the feeder voltage if the power converter supplies only reactive power. Assuming such a situation in the frequency conversion section, we developed an electronic frequency converter that controls the AC voltage using a fixed power factor method. The electronic frequency converter is installed in the Numazu frequency conversion substation. Here we describe the superiority of AC voltage control using the fixed power factor method.